U.S. patent number RE49,086 [Application Number 16/419,300] was granted by the patent office on 2022-05-31 for printer.
This patent grant is currently assigned to SATO HOLDINGS KABUSHIKI KAISHA. The grantee listed for this patent is SATO HOLDINGS KABUSHIKI KAISHA. Invention is credited to Takayoshi Jinnouchi, Hitoshi Onodera.
United States Patent |
RE49,086 |
Onodera , et al. |
May 31, 2022 |
Printer
Abstract
In a printer that performs printing on a label of a continuous
paper while feeding the continuous paper unwound from a paper sheet
supply unit to a side of a printing head portion via a damper
portion, a head pressure plate is arranged between an operating
portion that adjusts a pressing force against a thermal head
portion and a printing line of the thermal head portion such that
the head pressure plate is formed extended to connect them.
Inventors: |
Onodera; Hitoshi (Saitama,
JP), Jinnouchi; Takayoshi (Saitama, JP) |
Applicant: |
Name |
City |
State |
Country |
Type |
SATO HOLDINGS KABUSHIKI KAISHA |
Tokyo |
N/A |
JP |
|
|
Assignee: |
SATO HOLDINGS KABUSHIKI KAISHA
(Tokyo, JP)
|
Family
ID: |
53478900 |
Appl.
No.: |
16/419,300 |
Filed: |
May 22, 2019 |
PCT
Filed: |
December 25, 2014 |
PCT No.: |
PCT/JP2014/084333 |
371(c)(1),(2),(4) Date: |
June 23, 2016 |
PCT
Pub. No.: |
WO2015/099055 |
PCT
Pub. Date: |
July 02, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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Reissue of: |
15107680 |
Dec 25, 2014 |
9662911 |
May 30, 2017 |
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Foreign Application Priority Data
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Dec 26, 2013 [JP] |
|
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2013-268264 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B41J
25/312 (20130101); B41J 3/4075 (20130101); B41J
15/042 (20130101); B41J 11/0005 (20130101) |
Current International
Class: |
B41J
15/04 (20060101); B41J 25/312 (20060101); B41J
11/00 (20060101); B41J 3/407 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
0 645 253 |
|
Mar 1995 |
|
EP |
|
0 728 590 |
|
Aug 1996 |
|
EP |
|
2 280 874 |
|
Feb 1995 |
|
GB |
|
55-159987 |
|
Dec 1980 |
|
JP |
|
58-175052 |
|
Nov 1983 |
|
JP |
|
62-282947 |
|
Dec 1987 |
|
JP |
|
63-099966 |
|
May 1988 |
|
JP |
|
03-066759 |
|
Jun 1991 |
|
JP |
|
05-012152 |
|
Feb 1993 |
|
JP |
|
05-138982 |
|
Jun 1993 |
|
JP |
|
05-238101 |
|
Sep 1993 |
|
JP |
|
06-219014 |
|
Aug 1994 |
|
JP |
|
06-081743 |
|
Nov 1994 |
|
JP |
|
06-320829 |
|
Nov 1994 |
|
JP |
|
07-005744 |
|
Jan 1995 |
|
JP |
|
07-025042 |
|
Jan 1995 |
|
JP |
|
07-137315 |
|
May 1995 |
|
JP |
|
07-232465 |
|
Sep 1995 |
|
JP |
|
07-242037 |
|
Sep 1995 |
|
JP |
|
07-242038 |
|
Sep 1995 |
|
JP |
|
07-329395 |
|
Dec 1995 |
|
JP |
|
08-295063 |
|
Nov 1996 |
|
JP |
|
08-337029 |
|
Dec 1996 |
|
JP |
|
09-216436 |
|
Aug 1997 |
|
JP |
|
09-286127 |
|
Nov 1997 |
|
JP |
|
10-044553 |
|
Feb 1998 |
|
JP |
|
10-114091 |
|
May 1998 |
|
JP |
|
10-119324 |
|
May 1998 |
|
JP |
|
10-181148 |
|
Jul 1998 |
|
JP |
|
10-193726 |
|
Jul 1998 |
|
JP |
|
10-193738 |
|
Jul 1998 |
|
JP |
|
10-305600 |
|
Nov 1998 |
|
JP |
|
11-020264 |
|
Jan 1999 |
|
JP |
|
11-099725 |
|
Apr 1999 |
|
JP |
|
11-099726 |
|
Apr 1999 |
|
JP |
|
11-099726 |
|
Apr 1999 |
|
JP |
|
2000-318256 |
|
Nov 2000 |
|
JP |
|
2003-291385 |
|
Oct 2003 |
|
JP |
|
2004-098699 |
|
Apr 2004 |
|
JP |
|
2004-255730 |
|
Sep 2004 |
|
JP |
|
2005-028605 |
|
Feb 2005 |
|
JP |
|
2005-193396 |
|
Jul 2005 |
|
JP |
|
2006-335021 |
|
Dec 2006 |
|
JP |
|
2007-076662 |
|
Mar 2007 |
|
JP |
|
2007-168350 |
|
Jul 2007 |
|
JP |
|
2007-301869 |
|
Nov 2007 |
|
JP |
|
2008-254426 |
|
Oct 2008 |
|
JP |
|
2010-049743 |
|
Mar 2010 |
|
JP |
|
2010-253788 |
|
Nov 2010 |
|
JP |
|
2012-016896 |
|
Jan 2012 |
|
JP |
|
2013-216041 |
|
Oct 2013 |
|
JP |
|
2016-104531 |
|
Jun 2016 |
|
JP |
|
Other References
Chinese Office Action and English translation, Application No.
201480070617.9, Jan. 4, 2017, 11 pages. cited by applicant .
Japanese Office Action, Application No. 2013-268264 and English
translation, Sep. 25, 2017, 6 pages. cited by applicant .
Supplementary European Search Report, Application No. 14 87 5569,
dated Oct. 16, 2017, 6 pages. cited by applicant .
English translation of Japanese Office Action, Application No.
2019-084975, dated of drafting Mar. 6, 2020, 13 pages. cited by
applicant.
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Primary Examiner: Jastrzab; Krisanne M
Attorney, Agent or Firm: Foley & Lardner LLP
Claims
The invention claimed is:
1. A printer comprising: a feeding unit configured to feed a print
medium along a medium feed path; a printing unit disposed to oppose
the feeding unit in the medium feed path, the printing unit being
configured to print on the print medium fed along the medium feed
path; and a pressing unit configured to press the printing unit
onto the feeding unit in a state where the print medium is nipped
between the printing unit and the feeding unit, wherein the
pressing unit includes: a pressing-force adjustment portion
disposed at an upstream side in a feed direction of the print
medium with respect to a printing portion of the printing unit, the
pressing-force adjustment portion adjusting a pressing force on the
printing unit; and a pressing member disposed between the
pressing-force adjustment portion and the printing unit in a state
where the pressing member connects a pressing portion of the
pressing-force adjustment portion and the printing portion of the
printing unit, the pressing member being configured to transmit the
pressing force from the pressing-force adjustment portion to the
printing portion through a tip end of the pressing member.Iadd.,
and an elastic member separated from a location where the pressing
force is transmitted to the printing portion.Iaddend..
2. The printer according to claim 1, wherein the pressing member
has a bent portion formed by bending downward, and the tip end is a
tip of the bent portion.
3. The printer according to claim 1, wherein the pressing-force
adjustment portion includes: an operating portion disposed to
operate the pressing force on the printing unit; a pressure
changing unit disposed to be stepwise in order to change the
pressing force on the printing unit; and .[.an.]. .Iadd.the
.Iaddend.elastic member disposed in order to change the pressing
force on the pressing member.
4. The printer according to claim 1, wherein the pressing-force
adjustment portion includes: an operating portion disposed movably
to operate the pressing force on the printing unit; a pressure
changing unit disposed to be stepwise in order to change the
pressing force on the printing unit in stages corresponding to a
position where the operating portion moves; and .[.an.]. .Iadd.the
.Iaddend.elastic member disposed in order to change the pressing
force on the pressing member corresponding to the position where
the operating portion moves.
5. The printer according to claim 1, wherein the pressing member is
disposed swingably.
6. The printer according to claim 1, wherein a plurality of the
pressing members are disposed along a width direction of the print
medium.
.Iadd.7. The printer according to claim 1, wherein the pressing
unit further comprises a rotary shaft that extends through a hole
portion formed in a rear side of the pressing member such that a
front side of the pressing member that includes the tip end of the
pressing member is adjustable in a vertical direction around the
rotary shaft..Iaddend.
.Iadd.8. The printer according to claim 7, wherein the hole portion
completely encloses the rotary shaft..Iaddend.
.Iadd.9. The printer according to claim 1, wherein the pressing
member consists of a single piece..Iaddend.
.Iadd.10. A printer comprising: a platen roller configured to feed
a print medium along a medium feed path; a thermal head disposed to
oppose the platen roller in the medium feed path, the thermal head
being configured to print on the print medium fed along the medium
feed path; a pressing member configured to press the thermal head
onto the platen roller in a state where the print medium is nipped
between the platen roller and the thermal head, the pressing member
being configured to exert an adjustable pressing force on the
thermal head through a front side of the pressing member; and an
elastic member configured to generate force to adjust the
adjustable pressing force exerted by the pressing member on the
thermal head, wherein the pressing member is pivotally supported by
a rotary shaft at a rear side of the pressing member such that the
front side of the pressing member is adjustable around the rotary
shaft, and the elastic member is (1) completely offset from the
platen roller when the printer is viewed in a direction
perpendicular to a feeding direction of the print medium and (2)
separated from a location where the pressing member exerts force on
the thermal head..Iaddend.
.Iadd.11. The printer according to claim 10, wherein the pressing
member comprises a hole portion that at least partially encloses
the rotary shaft..Iaddend.
.Iadd.12. The printer according to claim 10, wherein the pressing
member consists of a single piece..Iaddend.
.Iadd.13. The printer according to claim 10, wherein the pressing
member has a downwardly extending protrusion..Iaddend.
.Iadd.14. The printer according to claim 13, wherein the protrusion
of the pressing member is aligned with a printing line of the
thermal head and the platen roller when the printer is viewed in a
direction perpendicular to the feeding direction of the print
medium..Iaddend.
.Iadd.15. The printer according to claim 13, wherein the protrusion
is provided at the front side of the pressing member configured to
press a back of a printing line of the thermal head..Iaddend.
.Iadd.16. The printer according to claim 10, wherein the elastic
member is configured to adjust the adjustable pressing force in a
stepwise manner..Iaddend.
.Iadd.17. The printer according to claim 10, further comprising: a
rotatable operating portion configured to increase or decrease a
compression of the elastic member such that the adjustable pressing
force is correspondingly increased or decreased..Iaddend.
.Iadd.18. The printer according to claim 17, wherein the operating
portion is configured to rotate in a first direction in which the
compression of the elastic member is increased and in a second
direction opposite to the first direction in which the compression
of the elastic member is decreased such that the adjustable
pressing force is respectively increased or decreased as the
operating portion rotates..Iaddend.
.Iadd.19. The printer according to claim 10, wherein the elastic
member is configured to act directly upon the pressing member to
adjust the adjustable pressing force exerted by the pressing member
on the thermal head..Iaddend.
Description
TECHNICAL FIELD
The present invention relates a printer, for example, a printer
having a label printing function that prints desired information,
such as a character, a sign, a diagram, a barcode, or similar
information, on a label or a similar printing medium.
BACKGROUND ART
A label printer is a printer having a function that, for example,
while unwinding a rolled continuous paper to feed the continuous
paper in a sheet-shape, prints desired information on a label of
the continuous paper.
At a printing unit of this label printer, a thermal head portion,
which performs printing on the label, and a platen roller portion,
which feeds the continuous paper, are disposed in a mutually
opposing state.
For printing, a printing quality is improved by contacting a
printing portion of the thermal head portion closely to the label
of the continuous paper by the thermal head portion being pressed
onto a side of the platen roller portion in a state where the
continuous paper is nipped between the thermal head portion and the
platen roller portion.
It should be noted that, for example, JP2007-301869A discloses a
printer that has such label printing function.
SUMMARY OF INVENTION
For the printer having the label printing function such as the
above, how to effectively press the printing portion of printing
means is a significant subject. For example, an appropriate
printing pressure with which the thermal head portion is pressed
onto the platen roller portion differs depending on a thickness and
a rigidity of the continuous paper to be printed, thus a printer
that can change its printing pressure in such cases is desired.
The present invention has been made in view of the above-described
technical background, and it is an object of the present invention
to provide a printer that can effectively press the printing
portion of the printing means.
To solve the above-described subject, a printer according to a
first aspect of the present invention includes a medium supply unit
configured to supply a print medium, feeding means configured to
feed the print medium supplied from the medium supply unit along a
medium feed path, printing means disposed to oppose the feeding
means in the medium feed path, the printing means being configured
to print on the print medium fed along the medium feed path, and
pressing means configured to press the printing means onto the
feeding means in a state where the print medium is nipped between
the printing means and the feeding means, wherein the pressing
means includes a pressing-force adjustment portion configured to
adjust a pressing force on the printing means; and a pressing
member disposed between the pressing-force adjustment portion and
the printing means in a state where the pressing member is extended
to connect a pressing portion of the pressing-force adjustment
portion and a printing portion of the printing means, the pressing
member being configured to transmit the pressing force from the
pressing-force adjustment portion to the printing portion.
In a printer according to a second aspect of the present invention
of the above-described first aspect, the pressing-force adjustment
portion includes an operating portion disposed movably within an
operating surface to operate the pressing force on the printing
means, a pressure changing unit disposed in a state of being
engaged with the operating portion, the pressure changing unit
being disposed to be stepwise in order to change the pressing force
on the printing means in stages corresponding to a position where
the operating portion moves; and an elastic member disposed in the
operating portion in order to change the pressing force on the
pressing member corresponding to the position where the operating
portion moves.
In a printer according to a third aspect of the present invention
of the above-described first or second aspect, the pressing member
is disposed swingably.
In a printer according to a fourth aspect of the present invention
of any one of the above-described first to third aspects, a
plurality of the pressing members are disposed along a width
direction of the print medium.
Effect of Invention
According to the first aspect, the printing portion of the printing
means of the printer can be pressed effectively.
According to the second aspect, the printing portion of the
printing means of the printer can be pressed effectively with a
simple structure.
According to the third aspect, a height of the pressing member can
be adjusted corresponding to the print medium of various
thicknesses, thus printing can be performed properly on the print
medium of the various thicknesses.
According to the fourth aspect, the print medium of various widths
can be pressed properly, thus printing can be performed properly on
the print medium of the various widths.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is an overall perspective view of an appearance of a printer
according to one embodiment of the present invention.
FIG. 2 is a perspective view for illustrating an inside of the
printer in FIG. 1.
FIG. 3 is a side view of the printer in FIG. 2.
FIG. 4A is an enlarged perspective view where a printing unit in a
closed state of a printing head portion in FIG. 3 is viewed from a
front.
FIG. 4B is an enlarged perspective view where the printing unit in
an open state of the printing head portion in FIG. 3 is viewed from
the front.
FIG. 5 is an enlarged perspective view where the printing unit in
FIG. 4A is viewed from a back side.
FIG. 6 is an enlarged side view of the printing portion in FIG.
3.
FIG. 7 is a perspective view where a printing head portion in FIG.
6 is extracted and viewed from a lower side.
FIG. 8 is an exploded perspective view of a head mechanism.
FIG. 9 is a perspective view illustrating an assembled state of a
head slider portion and a head holding portion which constitute the
head mechanism in FIG. 8.
FIG. 10 is a perspective view illustrating an assembled state of
the head mechanism in FIG. 8.
FIG. 11 is a perspective view of the printing unit of the printer
in FIG. 1 viewed from the front side.
FIG. 12A is a plan view of a top surface of an operating surface
plate which constitutes an operational panel unit of a pressing
device.
FIG. 12B is a plan view of a back surface of the operating surface
plate in FIG. 12A.
FIG. 13A is a perspective view of the operating surface plate in
FIG. 12A viewed from a back side.
FIG. 13B is a main part enlarged perspective view of the back
surface of the operating surface plate in FIG. 13A.
FIG. 14 is a cross-sectional view of a XIV-XIV line of the printing
head portion in FIG. 11.
FIG. 15 is a cross-sectional view of a XV-XV line of the printing
head portion in FIG. 11.
FIG. 16 is a cross-sectional view of a XVI-XVI line of the printing
head portion in FIG. 11.
FIG. 17A is a schematic cross-sectional view of the printing unit
before a thermal head portion is pressed.
FIG. 17B is a schematic cross-sectional view of the printing unit
while the thermal head portion is being pressed.
DESCRIPTION OF EMBODIMENTS
The following describes an embodiment as an example of the present
invention in detail based on drawings. It should be noted that in
the drawings to describe the embodiment, an identical reference
numeral is basically attached to an identical component, and its
repeated description is omitted.
A feed direction for printing a continuous paper (print medium),
specifically a direction feeding the continuous paper from a paper
sheet supply unit to a thermal head portion, is referred to as a
printing direction, and if there is no specific description, an
upstream in the feed direction is referred to as an upstream side
in the printing direction, and a downstream in the feed direction
is referred to as a downstream side in the printing direction.
FIG. 1 is an overall perspective view of an appearance of a printer
according to the embodiment.
A printer 1 according to the embodiment has, for example, a label
printing function, which prints information such as a character, a
sign, a diagram, a barcode, or similar information, on a label
adhered temporarily on a liner sheet.
On a front cover portion 2 at a front of the printer 1, an
operational panel unit 3, a power switch 4, and an issue port
(medium discharge port) 5 are disposed.
On the operational panel unit 3, an LCD (Liquid Crystal Display),
which displays a message or similar information, a plurality of
keys (line key, feed key, function key, direction indicating key,
cancel key, and similar keys), which operate an operation of the
printer 1, and a plurality of LEDs (Light Emitting Diodes), which
indicate a state of the printer 1, are disposed.
On one side surface of the printer 1, an open cover portion 6 is
openably/closably mounted in a vertical direction by hinge portions
7 at two sites.
Next, an internal structure of the printer 1 will be described in
reference to FIG. 2 and FIG. 3. FIG. 2 is a perspective view for
illustrating an inside of the printer in FIG. 1. FIG. 3 is a side
view of the printer in FIG. 2. It should be noted that in the
following description, a front side of the printer 1 (front cover
portion 2 side) is referred to as a front (downstream side in the
feed direction of the continuous paper), and its opposite side, and
a back side (back cover portion side) is referred to as a rear (at
an upstream side in the feed direction of the continuous
paper).
Inside the printer 1, a paper sheet supply unit (medium supply
unit) 10, which is disposed on its rear side, a printing unit 11,
which is disposed on its front side, and an ink ribbon portion 12,
which is disposed on its upper side, are installed.
The paper sheet supply unit 10, which is a configuration unit that
supplies a continuous paper (print medium) P to the printing unit
11, includes a support shaft 10a and a roll guiding portion 10b,
which is installed at one end of the support shaft 10a.
The support shaft 10a is a configuration portion that rotatably
supports the continuous paper P rolled up in a rolled shape. The
roll guiding portion 10b, which is a configuration portion that
fixes the rolled continuous paper P, is movably installed along an
axial direction of the support shaft 10a to be able to change its
position corresponding to a width of the continuous paper P.
The continuous paper P includes, for example, a long liner sheet
and a plurality of labels adhered temporarily at every
predetermined interval along a longitudinal direction of the liner
sheet. On a surface where an adhesive surface of the label contacts
on the liner sheet, a releasing agent such as silicone or similar
material is coated, and this ensures the label to be peeled off
easily. On a surface where the label is not applied on the liner
sheet, position detection marks, which indicate a position of the
label, are formed at every predetermined interval along the
longitudinal direction. For the label, there is a case where a
thermal paper is used and a case where a plain paper is used. In
the case of the thermal paper, on its surface, a thermal coloring
layer, which develops a specific color (such as black or red) when
reaching a predetermined temperature region, is formed.
There are two types of continuous papers P: an outside wound label
and an inside wound label. The outside wound label is wound in a
state where the label of the continuous paper P is positioned on an
outer peripheral surface of the rolled continuous paper P, and as
shown in FIG. 3, a continuous paper Ps (P: dashed line) is unwound
from around the center in the height direction of the paper sheet
supply unit 10 toward a bottom portion of the printing unit 11. In
contrast, the inside wound label is wound in a state where the
label of the continuous paper P is positioned on an inner
peripheral surface of the rolled continuous paper P, and as shown
in FIG. 3, a continuous paper Pb (P: solid line) is unwound from
around an internal bottom surface of the printer 1 toward the
bottom portion of the printing unit 11. It should be noted that for
both outside wound and inside wound, paper passing routes of the
continuous paper P (Ps, Pb) in the printing unit 11 are identical.
For both the outside wound label and the inside wound label, the
continuous paper P is fed in a state where a surface where the
label is temporarily adhered (printed surface) is upward.
The above-described printing unit 11, which is a configuration unit
that performs printing on the label of continuous paper P or a
similar print medium, includes a printing head portion 13, a
supporting stand 14, which is disposed below the printing head
portion 13, and a damper portion 15, which is disposed on a rear
(upstream of feed of the continuous paper P at the printing
direction) of them.
The printing head portion 13 is, as described below,
openably/closably installed inside the printer 1. When the printing
head portion 13 is in a closed state, between the printing head
portion 13 and the supporting stand 14, the paper passing route
(medium feed path) is formed. Then, this paper passing route is
coupled to the above-described issue port 5 (see FIG. 1).
On the supporting stand 14, a head lock lever portion 16, which
maintains the closed state of the printing head portion 13, is
installed. Operating this head lock lever portion 16 releases the
closed state of the printing head portion 13 and then a front
portion of the printing head portion 13 is lifted to open the
printing head portion 13 (the printing head portion 13 separates
from a platen roller portion 23).
The damper portion 15 is a configuration portion that gives tension
to the continuous paper P. According to the embodiment of the
present invention, the damper portion 15, which includes an outer
damper portion 15a and an inner damper portion 15b, moves in the
vertical direction (opens and closes) in conjunction with an
opening and closing of the printing head portion 13. However, in
the closed state of the printing head portion 13, the outer damper
portion 15a and the inner damper portion 15b are swingably
installed such that each can give tension to the continuous paper
P.
The above-described ink ribbon portion 12, which is a configuration
portion that supplies and rolls up an ink ribbon where printing ink
is applied, includes a ribbon supply unit 12a and a ribbon roll up
unit 12b, which is disposed on a lateral of a front of the ribbon
supply unit 12a. The ribbon supply unit 12a is a configuration unit
that rotatably supports the ink ribbon rolled up in a rolled-shape.
The ribbon roll up unit 12b is a configuration unit that rolls up
and recovers the already printed ink ribbon RB. It should be noted
that when using the ink ribbon, the ink ribbon extracted from the
ribbon supply unit 12a is passed through below the printing head
portion 13, and then rolled up by the ribbon roll up unit 12b.
According to such printer 1, the continuous paper P (Ps, Pb), which
is unwound from the paper sheet supply unit 10 in a sheet-shape, is
fed to the paper passing route between the printing head portion 13
and the supporting stand 14 via the damper portion 15, and in the
middle of this, after a printing process is executed on the label
of the continuous paper P or a similar print medium, is discharged
outside the printer 1 from the issue port 5.
Next, a configuration of the above-described printing unit 11 will
be described in reference to FIG. 4A to FIG. 7. FIG. 4A is an
enlarged perspective view where the printing unit in the closed
state of the printing head portion in FIG. 3 is viewed from a
front. FIG. 4B is an enlarged perspective view where the printing
unit in an open state of the printing head portion in FIG. 3 is
viewed from the front. FIG. 5 is an enlarged perspective view where
the printing unit in FIG. 4A is viewed from a back side. FIG. 6 is
an enlarged side view of the printing unit in FIG. 3. FIG. 7 is a
perspective view where a printing head portion in FIG. 6 is
extracted and viewed from a lower side.
The printing head portion 13 includes the front portion, which is
swingably in the vertical direction (that is, openably and
closably) supported by a head support plate 17 on one side surface
of the printing head portion 13 around a rotary shaft S1 (see FIG.
5 and FIG. 7) of a rear of the printing head portion 13.
On an inferior surface (surface facing the paper passing route) of
the printing head portion 13, a thermal head portion 18 (see FIG.
4B and FIG. 7) is installed in a state where its printing surface
faces the paper passing route. The thermal head portion 18 is
printing means, which performs printing on the label of the
continuous paper P and similar print medium with heating resistors
of a printing line 18L disposed on a printing surface of the
thermal head portion 18. On this printing line 18L, a plurality of
heating resistors (heating elements), which generates heat by
energization, are arranged along a width direction (direction
perpendicular to the feed direction of the continuous paper P) of
the continuous paper P.
On an inferior surface of a front side of the printing head portion
13, depressed claw portions 19, 19 (see FIG. 4B and FIG. 7) are
disposed so as to sandwich the thermal head portion 18. On an
inferior surface of the printing head portion 13, pins 20, 20,
which project outward from both side surfaces of the printing head
portion 13, are disposed on a rear of the depressed claw portion
19.
While such printing head portion 13 is biased in the opening
direction by a torsion spring 21 mounted on the rotary shaft S1
(see FIG. 5 and FIG. 7), the printing head portion 13 is maintained
to be in a closed state with lock claw portions 22, 22 of the
supporting stand 14 being hooked in the pins 20, 20 on a lower
portion of the printing head portion 13. Pulling the
above-described head lock lever portion 16 rightward in FIG. 6
moves the lock claw portion 22 rightward in FIG. 6 along with this,
thus unhooking the lock claw portion 22 from the pin 20. Unhooking
the lock claw portion 22 from the pin 20, as shown in FIG. 4B,
automatically opens the printing head portion 13 by biasing force
of the torsion spring 21.
In the closed state of the printing head portion 13, while the
depressed claw portions 19, 19 of the printing head portion 13 (see
FIG. 4B and FIG. 7) are fitted on both end portions of a rotary
shaft S2 (see FIG. 4 and FIG. 6) of the platen roller portion 23, a
printing surface of the thermal head portion 18 are pressed on the
platen roller portion 23 (see FIG. 4A and FIG. 4B), which is below
the thermal head portion 18, by a pressing device (pressing means)
24 (.[.see FIG. 5.]. .Iadd.described below.Iaddend.) disposed on
the printing head portion 13.
The platen roller portion 23 is feeding means that feeds the
continuous paper P unwound from the paper sheet supply unit 10 to
the issue port 5 (see FIG. 1) along the paper passing route, and a
surface of the platen roller portion 23 is coated with elastic
material such as hard rubber. This platen roller portion 23 is
rotatably in normal and reverse directions installed on an upper
portion of the supporting stand 14. To one end in an axial
direction of the rotary shaft S2 of the platen roller portion 23, a
gear G1 is coupled. This gear G1, for example, is engaged with a
rotary shaft of a driver (not illustrated) such as a stepping motor
via such as a timing belt (not illustrated). The gear G1 is coupled
to a gear G4 via concatenation gears G2 and G3 (see FIG. 5). It
should be noted that the pressing device 24 will be described later
in detail.
According to the embodiment, on an end portion on the damper
portion 15 side on the head support plate 17, which supports the
printing head portion 13, a suppression portion 17a (see FIG. 5 to
FIG. 7) is integrally formed. This suppression portion 17a is
formed at an opposite position of a front portion of the head
support plate 17 with respect to the rotary shaft S1. On a surface
facing the damper portion 15 on a distal end of this suppression
portion 17a, a pin 17b (see FIG. 7), which projects from its
surface, is disposed. The suppression portion 17a and the pin 17b
are parts of a mechanism, which opens and closes the damper portion
15 in conjunction with an opening and closing of the printing head
portion 13.
This mechanism can make the damper portion 15 move in a vertical
direction (opens and closes) in conjunction with the opening and
closing of the printing head portion 13. That is, when the printing
head portion 13 opens, the damper portion 15 lifts up in
conjunction with the printing head portion 13, which widens a width
through which the continuous paper P is inserted, and a visibility
of a lower portion of the damper portion 15 can be improved.
Therefore, the continuous paper P extracted from the paper sheet
supply unit 10 can pass through below the damper portion 15 not
being caught by a width adjustment guiding portion. Accordingly, an
operation to insert the continuous paper P through the paper
passing route of the printer 1 can be facilitated.
Additionally, when the printing head portion 13 closes, the damper
portion 15 moves down to the original height in conjunction with
the printing head portion 13, thus this can prevent leaving the
damper portion 15 not closed. Accordingly, a malfunction to print
in a state where the continuous paper P is not given tension is
prevented. A sequence of inserting operation of the continuous
paper P can also be simplified.
Furthermore, a mechanism for opening the damper portion 15 manually
is not disposed separately, and an opening mechanism and a closing
mechanism of the damper portion 15 are mutually doubled, thus the
structure can be simplified and the number of components can be
reduced. Accordingly, a cost of the printer 1 can be reduced and
downsizing of the printer 1 can be advanced.
It should be noted that in the paper passing route of the printing
unit 11, between the thermal head portion 18 and the damper portion
15, a paper-sheet-position detecting sensor (not illustrated) is
disposed. This paper-sheet-position detecting sensor, which is a
sensor that detects a label position of the continuous paper P by
detecting the position detection mark disposed on the continuous
paper P or a liner sheet part between adjacent labels, for example,
is constituted of a light reflection type or light transmission
type sensor.
At the printing process, the continuous paper P is fed by rotating
the platen roller portion 23 in a state where the thermal head
portion 18 is pressed on a side of the platen roller portion 23 by
the pressing device 24 while the continuous paper P is nipped
between the thermal head portion 18 and the platen roller portion
23. Then, based on information detected by the paper-sheet-position
detecting sensor, a printing timing is determined, and the heating
resistors of the printing line 18L are selectively heated by a
printing signal transmitted to the thermal head portion 18. Thus,
desired information, such as a character, a sign, a diagram, a
barcode, or similar information, is printed on the label of the
continuous paper P.
On the other hand, the outer damper portion 15a of the damper
portion 15, when viewing a side surface of the printing unit 11,
extends obliquely downward from a front side to a rear side, and is
supported by a damper supporting member 25 around a rotary shaft S3
of the front side (see FIG. 4A, FIG. 4B and FIG. 6) in a state
where the rear portion is swingable in the vertical direction. It
should be noted that a coil spring 26 in FIG. 5 is a member that
inhibits the outer damper portion 15a from going excessively to an
upper side (rear side), swingably supports the outer damper portion
15a.
The inner damper portion 15b of the damper portion 15, when viewing
the side surface of the printing unit 11, extends obliquely
downward from the rear side to the front side in contrast to the
outer damper portion 15a, and is supported by the rear portion of
the outer damper portion 15a around a rotary shaft S4 (see FIG. 4A,
FIG. 4B and FIG. 6) on the rear side in a state where a front
portion is swingable in the vertical direction.
At the printing process, a paper sheet contact portion of the inner
damper portion 15b is positioned on a downstream of feed of the
continuous paper P with respect to a paper sheet contact portion of
the outer damper portion 15a. That is, the paper sheet contact
portion of the inner damper portion 15b is disposed between the
printing head portion 13 and the paper sheet contact portion of the
outer damper portion 15a.
At a phase before passing through the paper, a height of the paper
sheet contact portion of the inner damper portion 15b is disposed
at a lower position than a height of the paper sheet contact
portion of the outer damper portion 15a. That is, the height of the
paper sheet contact portion of the inner damper portion 15b is
disposed between the paper sheet contact portion of the outer
damper portion 15a and a bottom surface inside the printer 1.
Disposing such inner damper portion 15b causes even the inside
wound label to be inserted to the paper passing route with the
continuous paper Pb contacting the inner damper portion 15b.
Accordingly, even with the inside wound label, the inner damper
portion 15b can give enough tension to the continuous paper Pb to
feed the continuous paper Pb properly and ensure the printing
quality.
Additionally, supporting the inner damper portion 15b in the outer
damper portion 15a pivotally can add the printer 1 a damper
function that is possible to give enough tension even to the inside
wound label without increasing a size of the printer 1.
On a lower portion of the outer damper portion 15a, a width
adjustment guiding portion 27 is movably installed along an axial
direction of the rotary shafts S3 and S4. The width adjustment
guiding portion 27 is a configuration portion that abuts on both
ends of the width direction of the continuous paper P fed from the
paper sheet supply unit 10, and guides the feed of the continuous
paper P. This width adjustment guiding portion 27 is coupled to a
guide operating portion 28 on a back side of the outer damper
portion 15a. This guide operating portion 28 is a tab for, while
moving the width adjustment guiding portion 27 according to the
width of the continuous paper P, fixing a position of the width
adjustment guiding portion 27.
According to the embodiment, on the bottom surface inside the
printer 1 below the damper portion 15, a depression portion 29 (see
FIG. 6) is partially formed. The depression portion 29 is formed in
closed states of the printing head portion 13 and the damper
portion 15, so that a lower portion of the width adjustment guiding
portion 27 is positioned below the bottom surface inside the
printer 1. The width adjustment guiding portion 27 includes a lower
end portion but does not contact a bottom surface of the depression
portion 29, and is away from the bottom surface of the depression
portion 29 at only a predetermined distance. This lower end portion
of the width adjustment guiding portion 27 may be formed, for
example, in an arc-shape.
In a case where the depression portion 29 does not exist, when
executing a so-called back feeding, which returns the continuous
paper P from the printing unit 11 to a side of the paper sheet
supply unit 10, the continuous paper P slacks to contact a bottom
surface inside the printer 1. In this case, the continuous paper P
is positioned lower than the lower end portion of the width
adjustment guiding portion 27, and may fall outside the range
determined by the width adjustment guiding portion 27. However,
resuming the printing operation in this state causes the continuous
paper P to go over the width adjustment guiding portion 27 and be
fed in a state where the damper portion 15 does not function. As a
result, a printing position displaces from a planned position, and
thins a printing density to end up with a deteriorated printing
quality. In particular, a continuous paper P of a narrower width
easily deviates from the width adjustment guiding portion 27. The
rolled continuous paper P loaded in the paper sheet supply unit 10
may slack due to a fictitious force by rotation.
In contrast to this, in a case where the depression portion 29 is
disposed, the lower portion of the width adjustment guiding portion
27 of the damper portion 15 is positioned lower than a line on the
bottom surface inside the printer 1, and the continuous paper P
does not fall outside the range determined by the width adjustment
guiding portion 27. Accordingly, when resuming the printing
operation, the continuous paper P does not go over the width
adjustment guiding portion 27, thus the damper portion 15 functions
without being impaired. Therefore, the malfunctions, such as a
printing position displacing from a planned position and thinning
of a printing density, can be avoided to improve the printing
quality of the printer 1.
The damper supporting member 25, which supports the above-described
outer damper portion 15a, is supported within the printer 1 around
of a rotary shaft S5 (see FIG. 5 and FIG. 6) on a front portion
side in a state where a rear portion is swingable in a vertical
direction.
On an upper portion of this damper supporting member 25, a long
groove portion (induction portion) 25a (see FIG. 5), which extends
along a longitudinal direction of the damper supporting member 25,
is formed. To this long groove portion 25a, the pin 17b (see FIG.
8) of the above-described head support plate 17 is movably fitted
along the long groove portion 25a. Thus, the head support plate 17,
which supports the printing head portion 13, is engaged with the
damper supporting member 25.
The damper supporting member 25 includes the rear portion, which
while being biased in a direction opening above (direction where
the entire damper portion 15 rises) around the rotary shaft S5 (see
FIG. 5 and FIG. 6) by a torsion spring 30 (see FIG. 5) mounted on
the rotary shaft S5, is suppressed by the suppression portion 17a
while the suppression portion 17a of the head support plate 17 is
positioned on a side of the outer damper portion 15a, and
maintained in a closed state. On the other hand, when the printing
head portion 13 closes, the suppression portion 17a returns to a
suppression position from a suppression release position along the
long groove portion 25a of the damper supporting member 25. Then
the rear portion of the damper supporting member 25 decreases
opposing the biasing force of the torsion spring 30 and the damper
portion 15 also is decreased automatically.
The opening and closing mechanism of the damper portion 15 is not
limited to the above-described configuration. Also, for example,
the opening and closing mechanism of the damper portion 15 may be
as follows. That is, the rear portion of the damper supporting
member 25 may be biased in a direction closing around the rotary
shaft S5 by the torsion spring 30 mounted on the rotary shaft S5
(direction where the entire damper portion 15 is decreased). In
this case, when the printing head portion 13 opens, as the
suppression portion 17a moves from the suppression position to the
suppression release position along the long groove portion 25a, the
rear portion of the damper supporting member 25 is pulled to rise.
Thus, the rear portion of the damper portion 15 opens in
conjunction with an opening operation of the printing head portion
13. On the other hand, when the printing head portion 13 closes, as
the suppression portion 17a moves from the suppression release
position to the suppression position along the long groove portion
25a, the rear portion of the damper supporting member 25 is
decreased by an action of the torsion spring 30, and the damper
portion 15 also is decreased. Thus, the rear portion of the damper
portion 15 closes in conjunction with a closing operation of the
printing head portion 13. In this case, the biasing force of the
torsion spring 21 on a side of the printing head portion 13 is
configured to be larger than the biasing force of the torsion
spring 30 on a side of the damper supporting member 25.
Next, a head mechanism disposed on the printing head portion 13
will be described in reference to FIG. 8 to FIG. 10. FIG. 8 is a
main part exploded perspective view of the head mechanism. FIG. 9
is a perspective view illustrating an assembled state of a head
slider portion and a head holding portion which constitute the head
mechanism in FIG. 8. FIG. 10 is a perspective view illustrating an
assembled state of the head mechanism in FIG. 8. It should be noted
that, in FIG. 10, an operating surface plate of the pressing device
is omitted to make a state inside the head mechanism easier to
see.
As illustrated in FIG. 8, a head mechanism 35 includes a head
slider portion 36, a head holding portion 37 and the pressing
device 24 in the order from the lower side.
The head slider portion 36 is a mechanism that moves a position of
the printing line 18L of the thermal head portion 18 back and forth
(front and rear along the feed direction of the continuous paper P)
corresponding to the type of the print medium (such as thickness
and hardness). The head slider portion 36 includes a lower layer
plate 36a, an upper layer plate 36b, a rotary shaft 36c and a gear
36d.
The lower layer plate 36a is fixed to a back surface of the thermal
head portion 18 (a back side surface of the printing surface) with
screws 36e attachably/detachably. In a front side of this lower
layer plate 36a, parts at both ends in a longitudinal direction of
the lower layer plate 36a (the width direction of the continuous
paper P) are bent upward, and their upper tip portions have
depressed hook portions 36f 36f formed.
Above the lower layer plate 36a, the upper layer plate 36b is
installed. The upper layer plate 36b supports the rotary shaft 36c
rotatably. Both ends of the rotary shaft 36c in a longitudinal
direction fit in the above-described depressed hook portions 36f,
36f of the lower layer plate 36a. This engages the lower layer
plate 36a with the rotary shaft 36c.
One end of the rotary shaft 36c is coupled with the gear 36d. On
the rotary shaft 36c, a portion where the depressed hook portions
36f is engaged, and the rotary shaft portion between them and the
center of the gear 36d are decentered. In view of this, the
rotation of the gear 36d causes the lower layer plate 36a engaged
with the rotary shaft 36c to move back and forth. This can change
the position of the printing line 18L of the thermal head portion
18 to the appropriate position corresponding to the type of the
print medium (such as thickness and hardness), thus the printing
quality can be improved.
The upper layer plate 36b has a hole portion 36g (see FIG. 8)
formed to penetrate its top and inferior surfaces. In this hole
portion 36g, a protrusion 18P disposed in the back surface of the
thermal head portion 18 is inserted.
The above-described head holding portion 37 is a mechanism that
holds the thermal head portion 18 attachably/detachably. The head
holding portion 37 includes a pressing plate 37a and a coil spring
37b.
The pressing plate 37a is installed on the upper layer plate 36b
with screws 37c, 37c in a state of being slightly movable along its
longitudinal direction (the width direction of the continuous paper
P). This pressing plate 37a has a hole portion 37d formed to
penetrate its top and inferior surfaces. Through this hole portion
37d, the above-described protrusion 18P is inserted. One end of the
pressing plate 37a in the longitudinal direction is bent downward,
and a head-hold releasing portion 37e (see FIG. 8) is formed on the
one end. A lower tip portion of this head-hold releasing portion
37e projects to the inferior surface of the printing head portion
13.
The coil spring 37b is mounted between the screws 37c, 37c. The
pressing plate 37a is biased to a direction pressing the protrusion
18P by the coil spring 37b. This holds the thermal head portion
18.
When removing the thermal head portion 18, release the pressing by
the pressing plate 37a on the protrusion 18P, by moving the
above-described head-hold releasing portion 37e of the pressing
plate 37a to the opposite direction with respect to the biasing
force of the coil spring 37b. On the other hand, when installing
the thermal head portion 18, press the thermal head portion 18 in a
state where the protrusion 18P is inserted in the hole portion 36g,
37d. Accordingly, the attachment and detachment of the thermal head
portion 18 can be facilitated.
Next, the pressing device 24 will be described in reference to FIG.
8, FIG. 10 and FIG. 11 to FIG. 16. FIG. 11 is a perspective view of
the printing unit viewed from the front side. FIG. 12A is a plan
view of a top surface of an operating surface plate which
constitutes an operational panel unit of a pressing device. FIG.
12B is a plan view of a back surface of the operating surface plate
in FIG. 12A. FIG. 13A is a perspective view of the operating
surface plate in FIG. 12A viewed from a back side. FIG. 13B is a
main part enlarged perspective view of the back surface of the
operating surface plate in FIG. 13A. FIG. 14 is a cross-sectional
view of a XIV-XIV line of the printing head portion in FIG. 11.
FIG. 15 is a cross-sectional view of a XV-XV line of the printing
head portion in FIG. 11. FIG. 16 is a cross-sectional view of a
XVI-XVI line of the printing head portion in FIG. 11. It should be
noted that FIG. 14 to FIG. 16 are cross-sectional views, and only a
few parts in the drawings are hatched to make the drawings easier
to see.
As illustrated in FIG. 8, the pressing device 24 includes a
pressure operating panel unit (pressing-force adjustment portion)
40 and a head pressure plate (pressing member) 50.
The pressure operating panel unit 40 is a mechanism that adjusts a
pressing force against the printing line 18L of the thermal head
portion 18. The pressure operating panel unit 40 is disposed on a
top surface of the printing head portion 13, as illustrated in FIG.
11. There are some cases where the pressure operating panel unit 40
is disposed on a side surface of the printing head portion 13. In
such a case, a structure of the pressing device becomes
complicated, and a size of the printer becomes large. In contrast
to this, according to this embodiment, the pressure operating panel
unit 40 of the pressing device 24 is disposed on the top surface of
the printing head portion 13, which achieves a simple structure of
the pressing device 24, and the downsizing of the printer 1.
Additionally, a visibility of the pressure operating panel unit 40
is improved, thus an operability of the pressing device 24 can be
improved.
The pressure operating panel unit 40 includes an operating surface
plate 41, a pressing force display unit 42, a pressing force
changing portion 43 (see FIG. 12B and FIG. 13) and an operating
portion 44.
The operating surface plate 41 is mounted on the top surface of the
printing head portion 13. On a top surface of this operating
surface plate 41, for example, a depressed area in an approximately
planar fan-shape is formed in two positions along the width
direction of the continuous paper P, and the pressing force display
unit 42 is formed in the depressed area.
On the pressing force display unit 42, for example, five circles of
which diameters gradually become larger or smaller along an arc of
the fan are provided. For example, here, the larger the diameter of
the circle is, the larger the pressing force is.
Each depressed area of the operating surface plate 41 has a hole
portion 41a (see FIG. 12) formed to penetrate top and inferior
surfaces of the operating surface plate 41. In a peripheral area of
the hole portion 41a on a back surface of the operating surface
plate 41, the pressing force changing portion 43 is formed. The
pressing force changing portion 43 is formed to be a stepwise shape
such that the projection heights change in stages along the
circumferential direction of the hole portion 41a (see FIG.
13).
In the position of the hole portion 41a in each depressed area of
the operating surface plate 41, the operating portion 44 is
installed in a rotatable state with respect to an inside surface of
the operating surface plate 41. The operating portion 44 has, as
illustrated in FIG. 8, a tab portion 44a, a large-diameter portion
44b, a small-diameter portion 44c, a coil spring (elastic member)
44d and a protrusion 44e.
The tab portion 44a is integrally molded on a top surface of the
large-diameter portion 44b. A part of this tab portion 44a extends
outside of an outer periphery of the top surface of the
large-diameter portion 44b. Rotating the operating portion 44 with
holding this extended end of the tab portion 44a can rotate the
operating portion 44 with relatively small force due to the
principle of leverage.
The small-diameter portion 44c is integrally molded under a back
surface of the large-diameter portion 44b. The small-diameter
portion 44c is formed to be cylindrical, and the coil spring 44d
(see FIG. 8, FIG. 14 and FIG. 15) is mounted within its cylinder.
The coil spring 44d is a member to press the head pressure plate 50
by abutting approximately on the middle of the head pressure plate
50 in the longitudinal direction.
The small-diameter portion 44c is inserted in the hole portion 41a
of the operating surface plate 41. On an outer periphery of the
small-diameter portion 44c, which projects from this hole portion
41a, the protrusion 44e is formed to project in a radial direction
of the small-diameter portion 44c. This protrusion 44e contacts the
stepped surface of the pressing force changing portion 43. This
causes the rotation of the operating portion 44 to change the
projection length of the small-diameter portion 44c in stages that
corresponds to the level difference of the steps of the pressing
force changing portion 43, and the pressing force of the coil
spring 44d against the head pressure plate 50 (that is, the thermal
head portion 18) change in stages.
The left side in FIG. 14 and the operating portion 44 in FIG. 15
illustrate example states before the thermal head portion 18 is
pressed. The coil spring 44d of the operating portion 44 is not in
contact with the head pressure plate 50. Meanwhile, the right side
in FIG. 14 and the operating portion 44 in FIG. 16 illustrate
example states while the thermal head portion 18 is pressed with
the highest force. The coil spring 44d of the operating portion 44
is in contact with the head pressure plate 50, and pressing the
head pressure plate 50.
The above-described head pressure plate 50 is a member to transmit
the pressing force from the operating portion 44 of the pressure
operating panel unit 40 to the printing line 18L of the thermal
head portion 18. The head pressure plate 50 is installed between
the operating surface plate 41 and the thermal head portion 18 in a
state of being extended to connect a pressing portion of the coil
spring 44d of the operating portion 44 and the printing line 18L of
the thermal head portion 18.
Here, since two operating portions 44 are disposed, the head
pressure plate 50 is also disposed, for example, two, corresponding
to it. Thus, by disposing a plurality of head pressure plates 50,
the continuous paper P of various widths can be pressed properly,
and the proper printing onto the continuous paper P of various
widths can be achieved.
Each head pressure plate 50 has both ends in the width direction
bent upward, and bent portions 50a are formed on the end portions.
This ensures the head pressure plate 50 both mechanical strength
and weight reduction.
On this bent portion 50a, a hole portion 50b is formed in a rear
edge side on the head pressure plate 50 in the longitudinal
direction. In this hole portion 50b, a rotary shaft 51 is inserted.
With this, the head pressure plate 50 is pivotally supported by the
rotary shaft 51 in a state where its front side end portion
swingable in a vertical direction around the rotary shaft 51.
Accordingly, the height of the front side end portion of the head
pressure plate 50 can be adjusted corresponding to the print medium
thickness, thus the proper printing on the continuous paper P of
various thickness can be performed.
A front side end portion of the head pressure plate 50 in the
longitudinal direction is bent downward, and a protrusion 50c is
formed on the end portion. This protrusion 50c is configured to
press a back side of the printing line 18L of the thermal head
portion 18 locally. Between both the ends of the head pressure
plate 50 in the longitudinal direction, the above-described coil
spring 44d of the operating portion 44 contacts to press the head
pressure plate 50.
Next, actions of the pressing device 24 will be described in
reference to FIG. 17A and FIG. 17B. FIG. 17A is a schematic
cross-sectional view of the printing unit before a thermal head
portion is pressed. FIG. 17B is a schematic cross-sectional view of
the printing unit while the thermal head portion is being
pressed.
During the printing process, when the printing line 18L of the
thermal head portion 18 fails to be in contact closely enough with
the print medium, the heat of the heating resistors of the printing
line 18L is not transmitted onto the print medium properly, thus
the printing quality deteriorates. In view of this, the printing is
performed in a state where the printing line 18L is closely
contacted with the print medium by the thermal head portion 18
being pressed on a side of the platen roller portion 23 during the
printing process.
Besides thin and relatively soft materials such as the continuous
paper P with labels, the print medium has thick and relatively hard
materials such as tags. The pressing force against the thermal head
portion is adjusted corresponding to each material to achieve the
close contact between the printing line and the print medium.
To press the printing line 18L effectively, it is preferable to
dispose the operating portion 44 immediately above the printing
line 18L. However, since another member is arranged immediately
above the printing line 18L, disposing the operating portion 44
immediately above the printing line 18L causes increased size of
the printer 1.
Therefore, according to the embodiment, as illustrated in FIG. 17A,
the operating portion 44 is disposed rearward with respect to the
printing line 18L, and the head pressure plate 50 is disposed in
between the pressing portion of the coil spring 44d of the
operating portion 44 and the printing line 18L to connect them.
In this way, as illustrated in FIG. 17B, the pressing force of the
coil spring 44d of the operating portion 44 can be transmitted to
the printing line 18L of the thermal head portion 18 locally by the
head pressure plate 50 and the protrusion 50c. As a result, the
pressing force by the operating portion 44 of the pressure
operating panel unit 40 can be transmitted to the printing line 18L
of the thermal head portion 18 effectively without causing the size
of the printer 1 to become larger. Accordingly, the printing line
18L can be pressed effectively to improve the printing quality.
As described above, the invention made by the present inventor has
been described specifically based on the embodiment. However, it
should be understood that the embodiment disclosed herein is for
illustrative purposes in all respects, and is not limited to the
technique disclosed. That is, the technical scope of the present
invention should not be construed in a restrictive manner based on
the description in the embodiment, should be construed in
accordance with the description in a range of the claim as a
principle, and the technique identical to the technique disclosed
in a range of the claim and all changes within the scope of the
claim are included.
According to the embodiment, a case that a continuous paper, which
includes a plurality of labels adhered temporarily on a liner
sheet, is used as a print medium has been described, but this
should not be construed in a limiting sense; for example, a
continuous label including an adhesive surface on one surface
(label without liner sheet), a continuous sheet without an adhesive
surface (continuous sheet), or, not limited to papers, a printable
film by a thermal head or a similar film can be used as a print
medium. The label without liner sheet, the continuous sheet, or the
film can include a position detection mark. In the case where the
label without liner sheet, where an adhesive is exposed, or a
similar label is fed, a roller including silicone may be disposed
while a non-adhesive coating is applied to a feed path.
In the above description, the present invention has been described
in a case applying to a stand-alone type printer, where an input
operation to the printer is executed without a personal computer,
but this should not be construed in a limiting sense; for example,
the present invention may also apply to an on-line type printer,
where the input operation to the printer is executed via the
personal computer.
This application claims the priority based on Patent Application
No. 2013-268264 filed in the Japan Patent Office on Dec. 26, 2013,
and every content of this application is incorporated herein by
reference.
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