U.S. patent application number 12/774896 was filed with the patent office on 2010-11-18 for sheet finishing apparatus of image forming apparatus.
This patent application is currently assigned to KABUSHIKI KAISHA TOSHIBA. Invention is credited to Hiroyuki TAKI.
Application Number | 20100289205 12/774896 |
Document ID | / |
Family ID | 43067860 |
Filed Date | 2010-11-18 |
United States Patent
Application |
20100289205 |
Kind Code |
A1 |
TAKI; Hiroyuki |
November 18, 2010 |
SHEET FINISHING APPARATUS OF IMAGE FORMING APPARATUS
Abstract
A sheet finishing apparatus includes a conveyance section to
convey a recording medium supplied from an image forming section in
a paper discharge direction, and a finishing section which
protrudes to a conveyance path from a side, parallel to the paper
discharge direction, of the conveyance path of the recording medium
in the conveyance section and finishes the recording medium
traveling along the conveyance path.
Inventors: |
TAKI; Hiroyuki; (Shizuoka,
JP) |
Correspondence
Address: |
PATTERSON & SHERIDAN, L.L.P.
3040 POST OAK BOULEVARD, SUITE 1500
HOUSTON
TX
77056
US
|
Assignee: |
KABUSHIKI KAISHA TOSHIBA
Tokyo
JP
TOSHIBA TEC KABUSHIKI KAISHA
Tokyo
JP
|
Family ID: |
43067860 |
Appl. No.: |
12/774896 |
Filed: |
May 6, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61178420 |
May 14, 2009 |
|
|
|
61178421 |
May 14, 2009 |
|
|
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Current U.S.
Class: |
270/58.08 ;
271/278 |
Current CPC
Class: |
B65H 31/36 20130101;
B65H 2403/942 20130101; B65H 2404/1523 20130101; B65H 2301/42266
20130101; B65H 2301/4213 20130101; B65H 2801/27 20130101; G03G
2215/00827 20130101; B65H 31/3081 20130101; B65H 2701/1315
20130101; B65H 2404/232 20130101; B65H 31/02 20130101; B65H
2404/1521 20130101; B65H 2404/161 20130101; G03G 15/6582 20130101;
G03G 2215/00818 20130101 |
Class at
Publication: |
270/58.08 ;
271/278 |
International
Class: |
B65H 39/00 20060101
B65H039/00; B65H 29/00 20060101 B65H029/00 |
Claims
1. A sheet finishing apparatus comprising: a conveyance section to
convey a recording medium supplied from an image forming section in
a paper discharge direction; and a finishing section which
protrudes to a conveyance path from a side, parallel to the paper
discharge direction, of the conveyance path of the recording medium
in the conveyance section and finishes the recording medium
traveling along the conveyance path.
2. The apparatus of claim 1, wherein the finishing section is a
staple unit to staple a plurality of the recording medium.
3. The apparatus of claim 1, wherein the finishing section is a
punch unit to form a hole in the recording medium.
4. The apparatus of claim 1, wherein the finishing section is a
staple unit to staple a plurality of the recording medium and a
punch unit to form a hole in the recording medium.
5. The apparatus of claim 1, wherein the conveyance section
temporarily stops the traveling recording medium at a time of
finishing in the finishing section.
6. The apparatus of claim 1, wherein the finishing section finishes
the traveling recording medium a plurality of numbers of times, and
the conveyance section temporarily stops the traveling recording
medium each time the finishing section finishes the medium.
7. The apparatus of claim 2, wherein the staple unit can rotate a
staple section, and when the recording medium is stapled obliquely
to the paper discharge direction, the staple unit rotates the
staple section after a rear end of the recording medium in the
paper discharge direction passes through a center of an opening
section of the staple section.
8. The apparatus of claim 1, further comprising an alignment
section which moves the recording medium in a direction
perpendicular to the paper discharge direction and laterally aligns
a side of the recording medium parallel to the paper discharge
direction, and in which an opening section side wall of the
finishing section is a lateral alignment reference surface of the
recording medium.
9. The apparatus of claim 3, wherein the punch unit sets a punch
hole position and the number of punch holes on the recording medium
based on user data.
10. The apparatus of claim 1, wherein the conveyance section
includes a conveyance belt and a clip which is disposed on the
conveyance belt and clips the recording medium.
11. A sheet finishing apparatus comprising: a conveyance section to
convey a recording medium supplied from an image forming section in
a paper discharge direction; and a finishing section which has an
opening section inside of which the recording medium conveyed by
the conveyance section can travel, and finishes the recording
medium in the opening section when the conveyance section
temporarily stops the traveling recording medium.
12. The apparatus of claim 11, wherein the finishing section is a
staple unit to staple a plurality of the recording medium.
13. The apparatus of claim 11, wherein the finishing section is a
punch unit to form a hole in the recording medium.
14. The apparatus of claim 11, wherein the finishing section is a
staple unit to staple a plurality of the recording medium and a
punch unit to form a hole in the recording medium.
15. The apparatus of claim 11, wherein the finishing section
finishes the traveling recording medium a plurality of numbers of
times, and the conveyance section temporarily stops the traveling
recording medium each time the finishing section finishes the
medium.
16. The apparatus of claim 11, further comprising an alignment
section which moves the recording medium in a direction
perpendicular to the paper discharge direction and laterally aligns
a side of the recording medium parallel to the paper discharge
direction, and in which an opening section side wall of the
finishing section is a lateral alignment reference surface of the
recording medium.
17. The apparatus of claim 11, wherein the conveyance section
includes a conveyance belt and a clip which is disposed on the
conveyance belt and clips the recording medium.
18. An image forming apparatus comprising: an image forming section
to form an image on a recording medium; a conveyance section to
convey the recording medium supplied from the image forming section
in a paper discharge direction; and a sheet finishing section which
includes an opening section protruding to a conveyance path from a
side, parallel to the paper discharge direction, of the conveyance
path of the recording medium in the conveyance section and finishes
the recording medium traveling in the opening section.
19. The apparatus of claim 18, wherein the sheet finishing section
is arranged in a hollow barrel formed in a main body of the image
forming section.
20. A sheet finishing method, comprising: conveying a recording
medium supplied from an image forming section in a paper discharge
direction; stopping the recording medium temporarily while the
recording medium is conveyed in the paper discharge direction;
finishing a side of the recording medium parallel to the paper
discharge direction when the recording medium is temporarily
stopped; and restarting conveyance of the recording medium in the
paper discharge direction after the finishing is performed.
21. The method of claim 20, wherein a process is repeated a
plurality of numbers of times, in which the recording medium is
stopped temporarily while the recording medium is conveyed in the
paper discharge direction, the finishing is performed when the
recording medium is temporarily stopped, and the conveyance is
restarted after the finishing is finished.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is based upon and claims the benefit of
priority from Provisional U.S. Applications 61/178420 filed on May
14, 2009 and 61/178421 filed on May 14, 2009, the entire contents
of which are incorporated herein by reference.
TECHNICAL FIELD
[0002] Embodiments described herein relates generally to a sheet
finishing apparatus for finishing a sheet on which an image is
formed.
BACKGROUND
[0003] There is a sheet finishing apparatus for performing
finishing, such as stapling or punching, on a sheet on which an
image is formed by an image forming apparatus. Hitherto, in the
sheet finishing apparatus, a finishing section, such as a staple
unit or a punch unit, is arranged at a rear end side perpendicular
to a sheet discharge direction. In the sheet finishing apparatus as
stated above, when the finishing section, such as the staple unit
or the punch unit, is fixed in order to achieve miniaturization and
reduction in cost, the staple unit can not staple plural portions,
and there is a fear that the user's needs can not be sufficiently
satisfied. Besides, in the punch unit, punch hole standards are
different between Japan and overseas, plural kinds of punch units
based on the respective standards must be provided, and there is a
feat that mass productivity is reduced.
[0004] Thus, it is desired to develop a sheet finishing apparatus
in which usability is not impaired and reduction in cost can be
realized.
[0005] According to an embodiment, a sheet finishing apparatus
includes a conveyance section to convey a recording medium supplied
from an image forming section in a paper discharge direction, and a
finishing section which protrudes to a conveyance path from a side,
parallel to the paper discharge direction, of the conveyance path
of the recording medium in the conveyance section and finishes the
recording medium traveling along the conveyance path.
DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a schematic structural view showing a sheet
finishing apparatus connected to an MFP of a first embodiment;
[0007] FIG. 2 is a schematic structural view showing a finisher of
the first embodiment;
[0008] FIG. 3 is a schematic explanatory view in which the finisher
of the first embodiment is seen from the above of a conveyance
path;
[0009] FIG. 4 is a schematic explanatory view showing the
arrangement of a stapler of the first embodiment;
[0010] FIG. 5 is a schematic explanatory view showing a belt
conveyance device of the first embodiment;
[0011] FIG. 6 is a schematic explanatory view showing a clip of the
first embodiment;
[0012] FIG. 7 is a schematic explanatory view showing a state where
the tip of the clip of the first embodiment is opened;
[0013] FIG. 8 is a block diagram showing a control system of the
first embodiment;
[0014] FIG. 9 is a schematic structural view showing the stapler
and an auxiliary alignment plate of the first embodiment;
[0015] FIG. 10 is a schematic structural view showing a finisher of
a second embodiment;
[0016] FIG. 11 is a block diagram showing a control system of the
second embodiment; and
[0017] FIG. 12 is a schematic structural view of the finisher of
the second embodiment in which a stapler is arranged adjacently to
a punch and which is seen from the above of a conveyance path.
DETAILED DESCRIPTION
[0018] According to an embodiment, a sheet finishing apparatus
includes a conveyance section to convey a recording medium supplied
from an image forming section in a paper discharge direction, and a
finishing section which protrudes to a conveyance path from a side,
parallel to the paper discharge direction, of the conveyance path
of the recording medium in the conveyance section and finishes the
recording medium traveling along the conveyance path.
[0019] Hereinafter, a first embodiment will be described. FIG. 1 is
a schematic explanatory view showing a finisher 20 as a sheet
finishing apparatus provided in an MFP 10 as an image forming
section of the first embodiment. The finisher 20 is positioned in a
hollow barrel 10a formed in the MFP 10 and is connected to the MFP
10. The MFP 10 includes, for example, a scanner 8, a printer
section 11, a control panel 14 and a paper feed section 16.
[0020] The MFP 10 forms an image on a sheet P as a recording medium
by the printer section 11 in accordance with image data read by the
scanner 8. The printer section 11 forms color toner images
corresponding to the image data by, for example, respective
stations 13Y, 13M, 13C and 13K of yellow (Y), magenta (M) , cyan
(C) and black (K), and then forms the color toner images on a
transfer belt 11a. The printer section 11 transfers the color toner
images on the transfer belt 11a by a transfer section 11b to the
sheet P supplied from the paper feed section 16. The printer
section 11 fixes the color toner images to the sheet P by a fixing
section 11c, and discharges the sheet P from a paper discharge
roller pair 12.
[0021] As shown in FIG. 2 to FIG. 6, the finisher 20 includes a
discharge tray 22 to support the sheet P supplied from the paper
discharge roller pair 12. The finisher 20 includes a processing
tray 21 which is disposed above a conveyance path to convey the
sheet supplied from the paper discharge roller pair 12 to the
discharge tray 22 and supports the sheet P. The finisher 20
includes an alignment roller unit 23 as an alignment section to
align the sheet P on the processing tray 21, a belt conveyance
device 24 as a conveyance section to convey the sheet P in a paper
discharge direction of an arrow m direction, a longitudinal
alignment plate 26, a staple unit 27 as a finishing section, and a
sensor 35 to detect the traveling of the sheet P. The processing
tray 21 includes a cut-out section 21a at a rear side.
[0022] The alignment roller unit 23 includes an alignment roller
23c at the tip of an arm 23b rotating using a shaft 23a as a
fulcrum. The arm 23b is rotated by ON-OFF operation of an arm
solenoid 28. When the arm solenoid 28 is ON, the arm 23b is moved
to a position indicated by a dotted line in FIG. 2. The alignment
roller 23c is separated from the sheet P on the processing tray 21.
When the arm solenoid 28 is OFF, the arm 23b is moved by its own
weight to a position indicated by a solid line in FIG. 2. The
alignment roller 23c contacts with the upper surface of the sheet P
on the processing tray 21. A portion of the alignment roller 23c,
which contacts with the sheet P, is formed of an elastic tube
30.
[0023] A roller motor 38 rotates the alignment roller 23c forwardly
and reversely through a link gear 38a, the shaft 23a, a timing belt
38b and a roller shaft 30a. When conveying the sheet P in the arrow
m direction, the alignment roller 23c rotates in an arrow r
direction of FIG. 2. When vertically aligning the sheet P, the
alignment roller 23c rotates in an arrow s direction. When
laterally aligning the sheet P, the alignment roller 23c stops the
rotation.
[0024] The alignment roller unit 23 slides in a direction
perpendicular to the arrow m direction. The arm 23b of the
alignment roller unit 23 slides along the shaft 23a by sliding a
rack 32 by a pinion gear 34 driven by a gear motor 33.
[0025] The longitudinal alignment plate 26 is positioned at the
upstream side end of the processing tray 21 in the paper discharge
direction. The longitudinal alignment plate 26 is perpendicular to
the processing tray 21, contacts with a rear end Pr of the sheet P
at the time of alignment, and aligns the sheet P in the
longitudinal direction.
[0026] A stapler 27a of the staple unit 27 is positioned at the
cut-out section 21a of the processing tray 21, and an opening
section 27b protrudes to the conveyance path of the sheet P. The
height of an opening section bottom surface 27c of the stapler 27a
is equal to that of the surface of the processing tray 21. An
opening section side wall 27d of the stapler 27a is a lateral
alignment reference of the sheet P. When the sheet P is aligned in
the lateral direction on the processing tray 21, a lateral end Ps
of the sheet P contacts with the opening section side wall 27d and
the sheet P is laterally aligned.
[0027] The finisher 20 includes a chuck 31 to prevent the sheet P
after the alignment operation from shifting on the processing tray
21. The chuck 31 is opened and closed by ON-OFF operation of a
solenoid 37, and when the solenoid 37 is ON, the chuck is opened as
shown by a dotted line in FIG. 2, and when the solenoid 37 is OFF,
the chuck is closed as indicated by a solid line in FIG. 2. The
chuck 31 is opened when the sheet P is aligned on the processing
tray 21, and is closed when the alignment operation of the sheet P
is finished.
[0028] As shown in FIG. 4, the stapler 27a staples the sheet P,
which passes through the opening section 27b, in the opening
section 27b protruding to the conveyance path of the sheet P. The
staple unit 27 includes a staple motor 29 to rotate and move the
stapler 27a. When stapling is performed in parallel to the sheet P,
the stapler 27a is arranged so that the opening section side wall
27d is parallel to the arrow m direction. When stapling is
performed obliquely to the sheet P, the staple motor 29 rotates the
stapler 27a around a fulcrum 27f in an arrow q direction by, for
example, 45.degree..
[0029] The belt conveyance device 24 is positioned at substantially
the center of the processing tray 21. As shown in FIG. 5, the belt
conveyance device 24 includes a clip 24b on a conveyance belt 24a.
The conveyance belt 24a stretched between a driving roller 42 and a
driven roller 43 rotates in an arrow n direction by driving the
driving roller 42 by a stepping motor 25. The conveyance belt 24a
uses the clip 24b to clip one or plural sheets P on the processing
tray 21 and conveys them in a direction toward the discharge tray
22. When the stapler 27a staples the sheet P, the belt conveyance
device 24 temporarily stops the conveyance of the sheet P. After
the stapling is finished, the conveyance belt device 24 restarts
the conveyance of the sheet P.
[0030] The clip 24b has a rotation force in an arrow t direction by
a spring 24c. The clip 24b includes a cam 24d at, for example, a
side part on the front side. The belt conveyance device 24 includes
a protruding cam follower 40 at the outer periphery of the
conveyance belt 24a on the driven roller 43 side. When the cam 24d
of the clip 24b moves along the cam follower 40, as shown in FIG.
7, the clip 24b rotates in an arrow x direction, and the tip of the
clip 24b is opened. When the clip 24b reaches the rear end of the
processing tray 21, the cam 24d disengages from the cam follower
40, and rotates in the arrow t direction by the rotation force of
the spring 24c, and the clip 24b is closed. The rear end Pr of the
sheet P on the processing tray 21 is clipped between the clip 24b
and the conveyance belt 24a. When the rear end Pr of the sheet P
reaches the end on the driving roller 42 side, it disengages from
the clip 24b by the firmness (tightness) of the sheet P.
[0031] Next, a control system of the finisher 20 will be described.
As shown in a block diagram of FIG. 8, a finisher control circuit
51 is connected to a finisher CPU 52. The finisher CPU 52 is
connected to an MFP-CPU 53 to control the MFP 10. The finisher
control circuit 51 controls the stapler 27a, the stepping motor 25,
the arm solenoid 28, the staple motor 29, the solenoid 37, the
roller motor 38, the gear motor 33 and the like. The detection
result of the sensor 35 is inputted to the finisher CPU 52. The
MFP-CPU 53 inputs the number of times of stapling by the stapler
27a, the staple position, the staple angle and the like to the
finisher CPU 52 by the input from the control panel 14. A memory
53a of the MFP-CPU 53 stores, for example, a program for driving
the MFP 10 or the finisher 20.
[0032] When printing is started, the MFP 10 forms a color toner
image on the sheet P, and then discharges the sheet P to the
finisher 20 side. The finisher 20 receives the sheet P supplied
from the MFP 10. While the sheet P is received, the alignment
roller 23c of the finisher 20 is separate from the processing tray
21.
[0033] (1) Case Where Finishing on the Sheet P is not Performed
[0034] When the sensor 35 detects that introduction of the sheet P
onto the processing tray 21 is finished, the finisher control
circuit 51 turns OFF the arm solenoid 28, and brings the alignment
roller 23c into contact with the sheet P. The finisher control
circuit 51 forwardly rotates the roller motor 38, and rotates the
alignment roller 23c in the arrow r direction. The alignment roller
23c conveys the sheet P in the arrow m direction, and discharges it
to the discharge tray 22.
[0035] (2) Case Where a Bundle of Sheets P is Discharged as
Finishing on the Sheet P
[0036] When the MFP-CPU 53 inputs an instruction of bundle
discharge to the finisher CPU 52 from the control panel 14, the
finisher control circuit 51 aligns plural sheets P, and then
discharges the bundle. When the sensor 35 detects that introduction
of the sheets P onto the processing tray 21 is finished, the
finisher control circuit 51 turns ON the solenoid 37 to open the
chuck 31, turns OFF the arm solenoid 28, and brings the alignment
roller 23c into contact with the first sheet P. The finisher
control circuit 51 reversely rotates the roller motor 38 by a
specified amount, and rotates the alignment roller 23c in the arrow
s direction. The alignment roller 23c conveys the sheet P in the
reverse direction to the arrow m direction, causes the rear end Pr
of the sheet P to abut on the alignment plate 26, and
longitudinally aligns the sheet P.
[0037] The finisher control circuit 51 forwardly rotates the gear
motor 33, and slides the alignment roller unit 23 from A position
to B position in an arrow v direction (where, both the A position
and the B position are the position of the center of the roller
shaft 30a). During the slide movement, the alignment roller 23c
moves the sheet P by a friction force in the arrow v direction,
causes the lateral end Ps of the sheet P to abut on the opening
section side wall 27d of the stapler 27b, and laterally aligns the
sheet P.
[0038] When the longitudinal alignment and the lateral alignment of
the first sheet P are completed, the finisher control circuit 51
turns OFF the solenoid 37 to close the chuck 31 and prevents the
sheet P from shifting. The finisher control circuit 51 turns ON the
arm solenoid 28, and reversely rotates the gear motor 33. The
alignment roller 23c is separated from the sheet P, and the
alignment roller unit 23 slides in an arrow w direction and returns
from the B position to the A position.
[0039] The finisher control circuit 51 aligns the second or later
sheet P on the processing tray 21 similarly to the first sheet.
When the alignment of a specified number of sheets P is completed,
the finisher control circuit 51 turns ON the stepping motor 25, and
rotates the conveyance belt 24a in the arrow n direction. The
conveyance belt 24a clips the rear end Pr of the plural aligned
sheets P by the clip 24b, conveys the bundle of sheets P in the
arrow m direction, and discharges the bundle to the discharge tray
22. At the time of the bundle discharge, the lateral ends Ps of the
plural sheets P travel in the opening section 27b of the stapler
27a.
[0040] (3) Case Where a Bundle of Aligned Sheets P is Stapled as
Finishing of the Sheets P
[0041] When the MFP-CPU 53 inputs an instruction of stapling from
the control panel 14 to the finisher CPU 52, the finisher control
circuit 51 staples a bundle of sheets P traveling in the opening
section 27b of the stapler 27a. While conveying the bundle of
sheets P aligned in the above (2) by the conveyance belt 24a in the
arrow m direction, the finisher control circuit 51 temporarily
stops the bundle of sheets P, staples it by the stapler 27a, and
then restarts the conveyance of the bundle of sheets P.
[0042] For example, when the needle of the stapler 27a is stapled
in parallel to the arrow m direction, after the sensor 35 detects
the rear end Pr of the sheet P, the stepping motor 25 is
temporarily stopped after being driven for a specified number of
steps, and a desired staple position is stopped at the opening
section 27b of the stapler 27a. After the stapling is finished,
driving of the stepping motor 25 is restarted, and the bundle of
stapled sheets P is discharged to the discharge tray 22. When
stapling is performed at plural places of the bundle of sheets P,
each time the desired staple position reaches the opening section
27b of the stapler 27a, (a) the bundle of sheets P is temporarily
stopped, (b) stapling is performed and (c) the conveyance of the
bundle of sheets P is restarted after the end of the stapling, and
these processes (a) to (c) are repeated.
[0043] For example, when the needle of the stapler 27a is inclined
with respect to the arrow m direction, and the bundle of sheets P
is stapled, the staple motor 29 rotates the stapler 27a in the
arrow q direction by 45.degree.. However, at the time of rotation
of the stapler 27a, it is prevented that the opening section side
wall 27d of the stapler 27a contacts with the bundle of sheets P.
Thus, as indicated by a dotted line in FIG. 3, when the rear end Pr
of the bundle of sheets P passes through the center D of the
stapler 27a, the stepping motor 25 immediately temporarily
stops.
[0044] Next, the staple motor 29 rotates the stapler 27a in the
arrow q direction by 45.degree.. The stapler 27a obliquely staples
the rear end Pr of the bundle of sheets P at the rear side.
Thereafter, the stepping motor 25 restarts driving, and discharges
the bundle of stapled sheets P to the discharge tray 22. After the
stapling is finished, the staple motor 29 rotates the stapler 27a
in the reverse direction to the arrow q direction by 45.degree.,
and returns the opening section side wall 27d of the stapler 27a to
be parallel to the arrow m direction.
[0045] As shown in FIG. 9, the stapler 27a may be provided with
auxiliary alignment plates 46 extending like a vane from both sides
of the opening section side wall 27d. By providing the auxiliary
alignment plates 46, the lateral end Ps of the sheet P is made to
abut on the opening section side wall 27d, and the alignment
property at the time of lateral alignment of the sheet P can be
further improved.
[0046] According to the first embodiment, in the state where the
stapler 27a is arranged at the specified position of the side
parallel to the traveling direction of the sheet P, the bundle of
sheets P can be stapled in various forms desired by the user.
Besides, the opening section 27b of the stapler 27a can be arranged
to protrude onto the conveyance path of the sheet P. Accordingly,
the miniaturization of the finisher 20 is realized, the staple in
the form desired by the user is obtained, and the usability can be
improved.
[0047] Next, a second embodiment will be described. The second
embodiment is different from the first embodiment in that a punch
unit is provided as a finishing section. In the second embodiment,
the same component as the component described in the first
embodiment is denoted by the same reference numeral, and its
detailed description is omitted.
[0048] As shown in FIG. 10, a finisher 120 includes a punch 60 as a
punch unit at a position of a cut-out section 21a of a processing
tray 21. An opening section 60a of the punch 60 protrudes to a
conveyance path of a sheet P. The height of an opening section
bottom surface 60b of the punch 60 is equal to that of a surface of
the processing tray 21. An opening section side wall 60c of the
punch 60 is a lateral alignment reference of the sheet P. When the
sheet P is aligned in a lateral direction on the processing tray
21, a lateral end Ps of the sheet P is brought into contact with
the opening section side wall 60c and the sheet P is laterally
aligned. The lateral end Ps of the laterally aligned sheet P
travels in the opening section 60a of the punch 60.
[0049] As shown in a block diagram of FIG. 11, a finisher control
circuit 151 is connected to a finisher CPU 152. The finisher CPU
152 is connected to an MFP-CPU 53 to control an MFP 10. The
finisher control circuit 151 controls a stepping motor 25, an arm
solenoid 28, a solenoid 37, a roller motor 38, a gear motor 33, the
punch 60 and the like. The detection result of a sensor 35 is
inputted to the finisher CPU 152. The MFP-CPU 53 inputs the number
of times of punching of the punch 60, the punch position and the
like to the finisher CPU 152 by an input from a control panel 14. A
memory 53a of the MFP-CPU 53 stores, for example, a program for
driving the MFP 10 or the finisher 120, and punch hole standard
data as user data of the MFP 10. For example, according to the user
area (Japan, North America, Europe, etc.), there is a case where
the size of the sheet P, or standards of the number of punch holes
to the sheet P, the position of the punch hole, the interval
between the punch holes, etc. are different. Even when the
standards of the number of punch holes, the position of the punch
hole, and the interval between the punch holes are different, the
finisher 120 obtains the punch hole standard data stored in the
memory 53a, and the punch holes of the standards desired by the
user are obtained at the time of punching.
[0050] (4) Case Where a Punch Hole is Provided in a Bundle of
Aligned Sheets P as Finishing of the Sheets P
[0051] At the time of printing, the operator inputs, from the
control panel 14, an instruction of sheet finishing to form a punch
hole in the sheet P. The finisher CPU 152 instructs the finisher
control circuit 151 based on the punch hole standard data stored in
the memory 53a of the MFP-CPU 53.
[0052] For example, based on the punch hole standard data for
Japan, the finisher 120 forms two punch holes in a bundle of sheets
P. While the finisher control circuit 151 conveys the bundle of
sheets P aligned in the above (2) by a conveyance belt 24a in an
arrow m direction, (d) temporarily stops the bundle of sheets P at
the first position in accordance with the punch hole standard data
for Japan. (e) The punch 60 forms the first punch hole in the
bundle of sheets P. (f) After the first punch hole is formed, the
conveyance belt 24a restarts the conveyance of the bundle of sheets
P, conveys it by a specified distance, and again temporarily stops
the bundle of sheets P at a second position in accordance with the
punch hole standard data for Japan. (g) The punch 60 forms the
second punch hole in the bundle of sheets P. (h) After the second
punch hole is formed, the conveyance belt 24a restarts the
conveyance of the bundle of sheets P, and discharges the bundle of
sheets P to a discharge tray 22.
[0053] Although the arrangement position of the punch 60 in the
finisher 120 is arbitrary, for example, based on punch hole
standard data for each area, the punch 60 can be previously
arranged at the first punch hole position. When the punch 60 is
arranged at the first punch hole position, in the finisher 120,
after a bundle of sheets P is aligned, the first punch hole is
first formed, and then, the conveyance of the bundle of sheets P is
started. In the finisher 120, the processing time of punching can
be shortened.
[0054] Irrespective of the punch hole standard data stored in the
memory 53a, the finisher CPU 152 can also instruct the finisher
control circuit 151 to form a punch hole desired by the user in a
bundle of sheets P in accordance with the input data from the
control panel 14. Besides, even when the number of sheets P
traveling in the opening section 60a is one, the punch 60 can form
a punch hole.
[0055] Besides, as shown in FIG. 12, in the finisher 120, a stapler
27a may be arranged adjacently to the punch 60. The finisher 120
can perform finishing desired by the user, such as stapling or
punching, on the sheet P traveling in an opening section 27b of the
stapler 27a and the opening section 60a of the punch 60. The
arrangement of the stapler 27a and the punch 60 is not limited as
long as the rotation of the stapler 27a is not blocked, and the
stapler 27a and the punch 60 may be set in a common case.
[0056] According to the second embodiment, it is not necessary that
a punch unit different in shape is prepared for each user different
in punch hole standards, and the punch unit is mounted in the
finisher 120. Punch holes of various forms desired by the user can
be formed in the sheet P in the state where the punch 60 is fixed
to the specified position of the side parallel to the traveling
direction of the sheet P, and the punch 60 can be made common.
Besides, the punch 60 can be arranged to protrude onto the
conveyance path of the sheet P. Accordingly, the miniaturization of
the finisher 120 is realized, the mass productivity is improved, a
punch hole according to the standards or shape desired by the user
is obtained, and the usability can be improved.
[0057] While certain embodiments have been described these
embodiments have been presented by way of example only, and are not
intended to limit the scope of the inventions. Indeed, the novel
apparatus and methods described herein may be embodied in a variety
of other forms: furthermore various omissions, substitutions and
changes in the form o the apparatus and methods described herein
may be made without departing from the spirit of the inventions.
The accompanying claims and there equivalents are intended to cover
such forms of modifications as would fall within the scope and
spirit of the invention.
* * * * *