U.S. patent number 3,594,079 [Application Number 04/745,822] was granted by the patent office on 1971-07-20 for book copier with movable carrier.
This patent grant is currently assigned to ICP Inc.. Invention is credited to Otto Anthony Clark, Burton Greenberg, Karl M. Murgas.
United States Patent |
3,594,079 |
Murgas , et al. |
July 20, 1971 |
BOOK COPIER WITH MOVABLE CARRIER
Abstract
A book copier machine having a carrier on which a book is
positioned. A drive roller contacting the carrier moves the carrier
in one direction from a first end toward a second end so that a
page is reproduced as it moves past a scanning window, and
reversing means reverses the direction of rotation of the drive
roller when the carrier reaches the second end, to cause the
carrier to move back toward said first end.
Inventors: |
Murgas; Karl M. (Lincolnwood,
IL), Greenberg; Burton (Chicago, IL), Clark; Otto
Anthony (Chicago, IL) |
Assignee: |
ICP Inc. (Skokie, IL)
|
Family
ID: |
24998387 |
Appl.
No.: |
04/745,822 |
Filed: |
July 18, 1968 |
Current U.S.
Class: |
399/195; D18/37;
355/50 |
Current CPC
Class: |
G03G
15/28 (20130101) |
Current International
Class: |
G03G
15/28 (20060101); G03G 15/00 (20060101); G03g
015/00 () |
Field of
Search: |
;355/50,51,75,82,25,3,8 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Matthews; Samuel S.
Assistant Examiner: Hutchinson; Kenneth
Claims
We claim:
1. In a reproduction apparatus including copy paper, a book
transport means for moving a book within a pathway from a first end
to a second end, a scanning window being positioned in the pathway,
a copy paper transport means for transporting copy paper through a
copy paper pathway, power means for driving said transport means,
means for reproducing an open page of said book onto the copy paper
as it moves past the scanning window, said book transport means
comprising:
at least one drive roller secured to the apparatus to rotate around
its own axis in substantially the same plane, said drive roller
contacting said carrier for moving said carrier between said first
and second ends.
2. The reproduction apparatus of claim 1 wherein said power means
comprises:
a main continuous rotating chain for driving said drive roller to
move said carrier from the first end toward the second end;
a reverse chain for rotating said drive roller for moving said
carrier from the second end back to the first end of the pathway;
and
a reverse motor means for driving said reverse chain, said reverse
motor being turned "on" after said carrier reaches the second end
to cause said carrier to be transferred from the second end back to
the input end of the pathway.
3. The reproduction apparatus of claim 1, wherein:
a book clutch means is associated with said drive roller, having a
first position when the drive roller is coupled to the power means
and a second position when the drive roller is decoupled from the
power means, said book clutch means being switched from the first
position to the second position when the carrier reaches the second
end and thereby enabling the carrier to be conveyed back to the
first end.
4. The reproduction apparatus of claim 3, wherein:
said copy paper transport means comprises an input pair of rollers,
one of the rollers being a copy paper drive roller, a copy paper
clutch means coupling and decoupling the copy paper drive roller
from the main chain;
a control switch associated with the copy paper clutch means and
having an on-position and off-position, said copy paper drive
roller being coupled to the main chain when the control switch is
in the on-position and decoupled from the main chain after the
control switch returns to the off-position, said copy paper being
pulled into the copy paper pathway when the control switch is in
the on-position; and
a switch member associated with the book clutch means and having an
on-position and an off-position, said lower section of the carrier
switching the switch member from the off-position to the
on-position and thereby causing the book clutch means to couple the
book drive roller with the main chain to provide the drive for
moving the carrier from the input end toward the output end, the
carrier switching the control switch from the off-position to the
on-position after the switch member is in its on-position.
5. In a reproduction apparatus including copy paper, a book
transport means for moving a book to be copied along an original
document pathway across a scanning window located between an input
end and an output end of the document pathway, a copy paper
transport means for transporting copy paper through a copy paper
pathway, power means for driving said transport means, means for
reproducing said book as it moves past the scanning window, said
book transport means comprising:
a book carrier associated with the book transport means for
supporting said book, said transport means moving the carrier
across said scanning window from a first end to a second end;
a track means extending from the first end to the second end of the
document pathway, said track means comprising an elongated groove,
said carrier including a finger extending into the groove and
moving therealong as the carrier moves from the first end to the
second end of the document pathway;
a reverse switch positioned at the second end of the groove, said
reverse switch having a normal-position and a reverse-position,
said finger switching the reverse switch to said reverse-position,
when the carrier reaches the output end; and
means for reversing the direction of movement of said carrier when
said finger switches the reverse switch to said reverse-position.
Description
BACKGROUND OF THE INVENTION
The present invention relates generally to a photocopy device
including electrostatic photocopy devices for books or other
articles having substantial thicknesses, and more particularly
relates to a book copier device having a transparent carrier on
which the article to be copied is positioned.
Electrostatic photocopy devices are commonly constructed to pass a
specially coated and electrostatically charged sheet of copy paper
through the focal plane of an optical conversion system. The
original document to be copied is positioned before the objective
camera lens. The image of the document is transferred through the
optical camera system and onto the sensitized surface of the copy
paper. The exposed or sensitive surface of the copy paper is then
passed through a fluid suspension of ink particles suitably charged
to react with the electrostatically charged image borne upon the
copy paper surface.
It is both technically inconvenient and costly to view at one
instant an entire original document page through an objective lens
in a copy machine camera system in order to transfer at one instant
the image of the entire document page to the sensitized copy paper.
To view at one instant an entire sheet of an original document
requires an exceptionally wide angle lens and large optical
elements having inconveniently long focal lengths. This arrangement
is further undesirable by the possible loss of resolution and edge
distortion of the image transferred to the copy paper. Also, the
cost of the optical components required for viewing a large area
instantaneously are appreciably greater than the cost of optical
components designed for viewing a relatively smaller area.
Previous photocopy machines avoided designs that require wide angle
optical components, for instance, by passing a movable camera past
a stationary original document which was positioned on a
transparent scanning window. The sensitized paper was held fixed in
the camera focal plane and the images were projected onto it in
successive increments as the camera moved past the original
document. A movable camera system required substantial space and
mechanical complexity, and therefore photocopy machines so equipped
were likely to be bulky in size, heavy, inherently slow and
expensive to own or even lease. Furthermore, the moving camera
system was not capable of being rapidly accelerated and was
required to be returned after each cycle to the original or
starting position before the next print cycle could be
initiated.
A lighter, smaller and more rapid print cycle photocopy machine may
be constructed if the original document is transported before the
objective lens of the copy machine camera, and simultaneously
sensitized copy paper is moved in the camera focal plane at a
direction and speed coordinated with the changing image transferred
through the camera optical system.
The invention herein utilizes the aforedescribed principles of
operation in a system in which an open book is transported on a
moving carrier before the objective lens of the camera of the
photocopy machine, and simultaneously a sheet of sensitized copy
paper is moved in the camera focal plane at a direction and speed
coordinated with the changing image of the book transferred through
the camera optical system. Thus, the image or increments of the
page or pages of the book are transferred onto the copy paper.
SUMMARY OF THE INVENTION
The present invention provides a system for reproducing increments
of an open page of a book positioned on a transparent plate of a
movable carrier. The carrier moves in a forward direction for
reproducing the open page and in the opposite or reverse direction
for returning the carrier back to its original or starting
position.
The carrier includes trigger means sliding within grooved tracks
for automatically controlling its forward and back movements.
Accordingly, a primary object of our invention is to provide a
photocopy machine for reproducing books or other articles of
substantial thickness.
Another object is to provide a photocopy machine which provides
simplified pathways for transporting the book and the copy paper;
thereby affording safeguards against jamming.
Another object is to provide a carrier having actuating means to
control the movement of the carrier in the forward and reverse
directions.
Still another object is to provide a reliable book transport system
and a reliable copy paper transport system.
Still another object is to provide a substantially linear pathway
for transporting a transparent book carrier across a scanning
window.
These and other objects and advantages of the invention will become
apparent from the illustrations in the accompanying drawings and
the following specification and claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to the drawings in which the same characters of reference
are employed to indicate corresponding or similar parts throughout
the several figures of the drawings.
FIG. 1 is a perspective view of a photocopy machine embodying the
principles of the invention;
FIG. 2 is an electrical schematic layout showing the switching
arrangement for controlling the photocopy reproduction and movement
of the carrier on which the book to be copied is positioned;
FIG. 3 is an enlarged sectional, mechanical schematic elevational
view of the photocopy machine in FIG. 1;
FIG. 4 is a top view of the book transport system and showing the
book carrier in phantom;
FIG. 5 is a side elevational view showing the drive means and
associated elements for controlling the rotation of the rollers of
the book transport system and the copy paper transport system;
FIG. 6 is a perspective view of the book carrier;
FIG. 7 is a perspective view of the bottom of the carrier shown in
FIG. 6;
FIG. 8 is a fragmentary, sectional perspective view of the carrier
operatively in position on the top of the machine;
FIG. 9 is a fragmentary perspective view of the copy paper input
feed means for manually feeding individual sheets of copy paper
into the photocopy machine; and
FIG. 10 is a sectional fragmentary view of the copy paper transport
system for manually feeding individual sheets of copy paper into
the machine.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now particularly to FIGS. 1, 3 and 4 of the drawings, the
reference numeral 10 indicates generally a book copier machine
embodying the principles of the invention. The book copier 10
comprises a substantially rectangular frame 12 having a pair of
opposed sidewalls 13 and 14, a front side 15 and a rear side 16. A
movable platform 17 extends outward from the top of the front side
15 of the frame 12. The book copier 10 comprises a book transport
system 18, a copy paper transport system 20 and a stationary camera
means 22 (FIG. 3).
The book transport system 18 comprises a substantially linear
pathway indicated generally by reference numeral 24 for
transporting a book carrier 25 (see FIGS. 4, 6 and 7) on which a
book 26 is positioned, from an input end 27 to an output end 28 on
the platform 17, and back again to the input end 27.
The book carrier 25 is driven across the pathway 24 from the input
end 27 by an input drive roller 29 and output drive rollers 30 and
31. Idler rollers 32 and 33 are rotatably mounted on the platform
17 and provide a smooth transition, as the book carrier 25 is
transported by the output rollers 30 and 31 onto the platform
17.
A transparent glass scanning window 34 is positioned in the pathway
24 between the output drive rollers 30, 31. The images of
increments of the open page of book 26 moving across the scanning
window 34 is transferred by the camera means 22 onto a length of
photosensitive copy paper.
The copy paper transport system 20 (FIGS. 3 and 10) comprises a
pathway 35 for transporting the length of copy paper from a copy
paper input end 37 to a copy paper output end 37. The copy paper
may be stored on a roll 39 supported on a spindle 40. Individual
sheets of copy paper may be manually inserted into the pathway 35.
The description immediately following will first describe a machine
using the roll 39 supply of copy paper.
The copy paper transport system 20 includes an input pair of
cooperating rollers 42 and cooperating pairs of rollers indicated
respectively by the numerals 44, 45 and 46. The roller pairs 42,
44, 45 and 46 are spaced apart within the pathway 35 and move the
copy paper from the input end 36 to the output end 37.
An image receiving section 48 (FIG. 3) is positioned in the copy
paper pathway 35 between roller pairs 44 and 45. The image of the
open page of the book moving across the scanning window 34 is
conveyed by the camera means 22 onto the photocopy paper moving
across the image receiving section 48. Section 48 may be a ladder
type configuration formed from a nylon material, having a
rectangular outer perimeter and spaced apart cords extending from
one elongated side to the other, or other suitable configurations
may be used which do not affect the sharpness or definition of the
transferred image of the original document. A backup plate 49 is
opposed to and spaced from the image receiving section 48. The copy
paper moves between the backup plate 49 and the section 48.
A knife means (FIG. 3) indicated generally by the reference numeral
50 is positioned in the copy paper pathway 35 inward from and
adjacent to the input pair of rollers 42. When the knife means 50
is actuated, it severs a length of copy paper from the roll 39
which is substantially the length of the carrier 25.
A corona section indicated generally by the reference numeral 52
(FIG. 3) is positioned between the knife means 50 and roller pair
44. Corona section 52 charges or sensitizes the photosensitive
paper prior to its passage across the image receiving section
48.
After the camera means 22 has transferred the image of the open
book page onto the photosensitive copy paper, the exposed copy
paper then passes through a receptacle 53 containing toner solution
53'. The receptacle 53 has a toner overflow section 55 which
receives toner solution after it has been squeezed from the copy
paper passing between the roller pair 46. The toner solution
develops the exposed copy paper. The output pair of rollers 46
transfers the copy paper to an output "O" ring conveyor 56 leading
to the copy paper output 37.
Referring now particularly to FIGS. 2, 3, 4 and 5 of the drawings,
the mechanical drive means for the book transport system 18 and
copy paper transport system 20 will be described. A main motor 58
drives a main continuous revolving drive chain 60. The main chain
60 drives the input drive roller 29 of the book transport system 18
and the drive rollers 62, 63, 64 and 65 respectively of roller
pairs 42, 44, 45 and 46 of the copy paper transport system 20 (FIG.
3). The idler rollers of these copy paper roller pairs 42, 44, 45
and 46 are designated respectively by the numerals 62', 63', 64'
and 65'.
A reverse motor 66 drives a reverse continuous drive chain 67 in
the opposite direction (counterclockwise in FIG. 5) with respect to
the rotation of main chain 60. The reverse motor 66 is only "on"
when the carrier 25 is returned from the output end 28 to the input
end 27. During the interval when the reverse motor 66 is "on",
reverse chain 67 drives the output rollers 30, 31.
The main chain 60 provides the driving power for transporting the
carrier 25 from the input end 27 to the output end 28 of the book
transport system 18 and the length of copy paper from the copy
paper input end 36 to the copy paper output end 37. The reverse
chain 67 provides the driving power to transport the carrier 25
from the output end 28 back to the input end 27.
A copy paper clutch means indicated generally by the reference
numeral 68 couples and decouples the main drive chain 60 from the
drive roller 62 of copy paper input roller pair 42. The clutch
means 68 may comprise a rectifier means 68a to convert AC power to
DC power for energizing an electromagnet 68b (FIG. 2) enclosed with
a housing 69 mounted on a shaft 70 of the drive roller 62 of the
input roller pair 42. The energizing of the electromagnet 68b
causes a mechanical linking of the shaft 70 to a sprocket 72. The
teeth of sprocket 72 engage the main drive chain 60. Thus, when the
electromagnet 68b is energized the sprocket 72 is locked to the
input drive roller 62, causing input roller pair 42 to rotate as
the sprocket 72 is rotated by the main chain 60 and thereby pulling
copy paper off from the roll 40. After the knife means 50 has
severed the length of copy paper from the copy paper roll 39, the
electromagnet 68b of clutch means 68 is deenergized to mechanically
decouple the copy paper input roller pair 42 from the main chain
60. This prevents any further feeding of copy paper into the copy
paper pathway.
A book clutch means indicated generally by the reference numeral 73
(FIGS. 3, 4, 5 and 8) couples and decouples the main chain 60 from
the book input roller 29. Clutch means 73 may also comprise a
rectifier means 73a (FIG. 3) to convert AC power to DC power for
energizing an electromagnet 73b (FIG. 2) enclosed within a housing
74 which is mounted on a shaft 75 of the book input roller 29. The
rectifier means 73 may be mounted to sidewall 13. The energizing of
the electromagnet 73b mechanically couples the shaft 75 of the book
input roller 29 to a main sprocket 76. The teeth of the sprocket 76
engage the main drive chain 60 (FIGS. 4 and 8). Normally, the
electromagnet is energized and the sprocket 76 is locked to the
input roller 29, causing the input roller 29 to rotate as the
sprocket 76 is rotated by the main chain 60.
An auxiliary sprocket 77 is fixedly fastened on the shaft 75 of the
book input roller 29. The teeth of sprocket 77 engage the reverse
chain 67. When book input roller 29 is driven by the main chain 60,
auxiliary sprocket 77 is simultaneously rotated to drive the
reverse chain 67 in the forward direction or clockwise as viewed in
FIG. 5, which is the same direction as the movement of main chain
60. The forward movement of the reverse chain drives book output
rollers 30, 31 in the forward direction. After the carrier 25 has
reached the output end 28, the electromagnet of book clutch means
73 is deenergized and reverse motor 66 is turned "on." The
deenergizing of the electromagnet of book clutch means 73
mechanically decouples the book input drive roller 29 from the main
chain 60. When the reverse motor 66 is turned "on," the reverse
chain 67 drives the book drive rollers 29, 30 and 31 in the reverse
direction or counterclockwise, which is opposite in direction to
the rotation of main chain 60, causing the carrier 25 to return to
the input end 27.
The camera means 22 (FIG. 3) comprises a reflecting mirror 78
positioned to receive the images of the open page of the book
moving across the scanning window 34 and reflects the images into
the focal plane of an objective lens 79.
The objective lens 79 focuses the images of the book through an
image pathway 79' and onto the photosensitive copy paper moving
across the image receiving section 48. The image reflection and
sharpness of the photocopy is controlled by the light beamed to the
mirror 78 from a high-intensity lamp 80. As shown, the image
pathway from the mirror 78 is substantially parallel with respect
to the book pathway 24 and extends toward the rear side 16 of the
machine.
A control switch 81, SW1 (FIGs. 2, 3 and 4) is centrally positioned
inward from book drive roller 29. Switching arm 81' (FIG. 2) of
control switch 81, SW1 is switched from a normal or off-position to
an on-position by the leading edge 82 (FIGS. 6 and 7) of the
carrier 25.
In the on-position, control switch 81, SW1 causes the energizing of
the electromagnet of the copy paper clutch means 68 and the
energizing of a relay 83 (FIG. 2) which sets a knife solenoid 83'
of the knife means 50 in a "go" or ready condition.
Relay 83 includes a switch 83A and a switch 83B (FIG. 2). Switch
83A provides an electrical connection to line 2 voltage for knife
solenoid 83', when relay 83 is energized and switch 81, SW1 is in
its off-position. Switch 83B provides an electrical connection to
line 2 voltage for energizing relay 83 and clutch means 68. Relay
83 and clutch means 68 remain energized until the knife means 50
has severed the length of copy paper from roll 39.
An exposure switch 84, SW2 (FIGS. 2 and 3) is positioned adjacent
the input to the corona section 52, as shown. The leading edge of
the copy paper switches the exposure switch 84, SW2 from a normally
off-position to an on-position. When switch 84, SW2 is in the
on-position, a relay 85 is energized which closes relay switch 85'.
Switch 85' in the closed position connects line 2 voltage to a
high-voltage power supply 86 and the high-intensity lamp 80;
thereby turning "on" the high-voltage supply 86 and the
high-intensity lamp 80. Power supply 86 supplies high voltage to
the corona section 52 to sensitize the copy paper as it passes
through.
A hold switch 87, SW3 is positioned in the copy paper pathway 35
just above roller pair 45. The hold switch 87, SW3 is switched to
an on-position from a normally off-position by the leading edge of
the copy paper. Hold switch 87, SW3 remains in its on-position and
maintains the lamp 80 and high-voltage power supply 86 "on" until
the entire length of the severed copy paper has moved past the
image receiving section 48. Therefore, after the trailing edge of
the copy paper travels past the hold switch 87, SW3, the hold
switch returns to its off-position and lamp 80 and power supply 86
turns "off."
The control switch 81, SW1 automatically returns to the
off-position after the trailing end 88 of the carrier 25 has moved
past. In the off-position, the control switch connects line 2
voltage to the knife solenoid 83', causing the knife means 50 to
sever a length of the copy paper from the roll 39 having
substantially the equivalent length as he carrier 25.
The cutting action of knife means 50 opens switch 89 (FIG. 2) which
causes the deenergizing of the electromagnet of the copy paper
clutch means 68 and relay 83, by severing their electrical
connection with line 2 voltage.
The carrier 25 comprises a transparent plate 90 secured within an
elongated holder 91 (see FIGS. 6 and 7). The plate 90 is formed
from a nonscratchable material such as glass. The holder 91
comprises an upper section 91' and a lower section 92. The forward
edge 92' of the lower section 92 is spaced inward from the front
end 82 of the carrier 25. A substantially L-shaped trigger finger
93 extends perpendicularly outward from the holder 91 adjacent the
trailing end 88 of the carrier 25. The lower section 92 and finger
93 provide actuating means to control the reverse movement of
carrier 25 from the output end 28 back to input end 27.
An outer grooved track 94 (FIG. 4) extends lengthwise along the top
of the machine adjacent side 14 from input end 27 to output end 28.
The width of outer track 94 is slightly larger than the width of
trigger finger 93.
An inner grooved track 95 is adjacent the outer track 94 and also
extends lengthwise along the top of the machine from the input end
27 to the output end 28. The width of inner track 95 is slightly
larger than the width of the lower section 92. When the carrier 25
is operatively in place, the trigger finger 93 is positioned in
outer track 94 and lower section 92 is positioned in inner track
95. The finger 93 and lower section 92 slide within there
respective tracks 94 and 95 as the carrier 25 moves in the forward
or reverse directions.
Referring now particularly to FIG. 2, the energized or deenergized
state for a reverse control relay 96 controls the voltage applied
to the reverse motor 66, to the book clutch means 73 and to control
switch 81, SW1. Relay 96 includes a relay switch 97 and a relay
switch 98. In the deenergized condition for relay 96 as shown in
FIG. 2, movable arm 99 of relay switch 97 contacts terminal 102 and
movable arm 104 of relay switch 98 contacts terminal 106. Terminal
106 is connected to the switching arm 81' of control switch 81,
SW1. When relay 96 is energized, movable arm 99 of switch 97
contacts terminal 108 and movable arm 104 of switch 98 contacts
terminal 110.
A switch 112, SW4 (FIGS. 2 and 4) is positioned in the inner track
95 adjacent the input end 27 of the book copier transport system
18. Upon contact of the forward edge 92' of carrier 25 with switch
112, SW4, the movable arm 114 connects with terminal 116, which in
turn is connected to movable arm 104 of relay switch 98 of relay
96. As may be seen from FIG. 2, line 2 voltage from switch 112, SW4
is applied to switching arm 81' of control switch 81, SW1 through
switch 98 when relay 96 is in the deenergized state. Switch 112,
SW4 is maintained "on" until the entire length of lower section 92
of the carrier 25 has passed over.
A hold switch 118, SW5 FIGS. 2 and 4) is positioned in the inner
track 95 adjacent drive roller 30 of the book transport system 18.
The forward edge 92' of the lower section 92 of carrier 25
mechanically switches switch 118, SW5 from a normally off-position
to an on-position by forcing the movable arm 120 into contact with
terminal 122. Terminal 122 is connected to terminal 116 of switch
112, SW4. When switch 118, SW5 is switched "on," switch 112, SW4 is
also "on." When the trailing end 88 of carrier 25 finally passes
switch 112, SW4, the hold switch 118, SW5 provides line 2 voltage
to control switch 81, SW1.
A switch 126, SW6, is positioned in the outer track 94 also
adjacent drive roller 30. Trigger member 93 moves switch 126, SW6
to an "on" position from a normally "off" position, whereby its
movable arm 128 contacts terminal 130 which is connected to line 2
voltage. Movable arm 128 is connected to terminal 132 of relay 96.
The other terminal 134 of relay 96 is connected to line 1 voltage.
Therefore, in the on-position for switch 126, SW6, relay 96 is
energized, causing movable arm 99 of relay switch 97 to move from
its off-position in contact with terminal 102, to its on-position
in contact with terminal 108, and movable arm 104 of relay switch
98 to move from its off-position in contact with terminal 110.
The movement of arm 99 of switch 97 away from terminal 102 severs
line 1 voltage from the book clutch means 73, causing drive roller
29 to be decoupled from the main chain 60. The contacting of arm 99
with terminal 108 connects line 1 voltage to the reverse motor 66,
thereby turning the reverse motor 66 "on." Reverse chain 67 now
rotates in a counterclockwise direction as viewed in FIG. 5,
driving rollers 29, 30 and 31 in the reverse direction.
The movement of arm 104 of switch 98 away from terminal 106 removes
line 2 voltage from control switch 81, SW1. This prevents the
electromagnet of the copy paper clutch means 68 from being
energized when the trailing end 88 of the carrier 25 switches the
switch 81, SW1 back to its on-position, during the reverse movement
of carrier 25 toward the input end 27. The contact of arm 104 with
terminal 110, which is connected to terminal 132 of relay 96,
maintains line 2 voltage on the relay 96 when switch 126, SW6
returns to its off-position after trigger member 93 has passed over
the switch in the reverse movement of carrier 25.
In the reverse movement of carrier 25, switch 112, SW4 is switched
back to its on-position by the lower section 92 of carrier 25 prior
to switch 118, SW5 returning to its off-position. Thus, switch 112,
SW4 connects line 2 voltage to arm 104 of switch 98 to maintain
relay 96 "on" after switch 118, SW5 returns to its off-position.
When the trailing end 88 of carrier 25 moves past switch 112, SW4
it returns to its off-position, thereby removing line 2 voltage
from relay 96. Relay 96 becomes deenergized, causing the reverse
motor 66 to turn "off," book clutch means 73 to energize whereby
drive roller 29 is again coupled to main chain 60, and line 2
voltage to be connected to arm 81' of the control switch 81, SW1.
The machine is now ready for another operating cycle.
With reference to FIGS. 9 and 10 the manual copy paper sheet feed
will be described. Similar parts to those in the other figures are
identified in FIGS. 9 and 10 by the same reference numeral with a
suffix "c."
For the manual copy paper sheet feed (FIGS. 9 and 10), the
automatic knife means 50 is replaced in pathway 35c with switch
130, SW8 having a normal-position and a standby-position. In the
normal-position, alternating current (AC) line voltage is connected
to the clutch means 68c for energizing the magnetic means 68b (FIG.
2). In the standby-position, the AC line voltage connection with
the magnetic means 68c is severed.
When the standby switch 130, SW8 is in the normal-position, the
drive chain 60c is coupled to the drive roller 62c of the copy
paper input roller pair 42c. In the standby-position before the
original document is inserted into the system, the drive chain 60c
is coupled to the drive roller 62c; thus preventing the copy paper
sheet from penetrating further into the copy paper pathway 35c. The
standby switch 130, SW8 is switched from the normal-position to the
standby-position by the leading edge 132 of the copy paper sheet.
FIG. 9 illustrates the position of the sheet of copy paper after
the leading edge 132 of copy paper has moved switch 130, SW8 to its
standby-position.
OPERATION
Turning now particularly to FIGS. 2, 3, 4 and 5, the sequence of
operating cycle for the machine 10 will be described with greater
detail. The operating cycle comprises a photocopy part and a
reverse part. In the photocopy part of the operating cycle, the
carrier 25 moves from the input end 27 to the output end 28 and the
open book positioned on the carrier is scanned as it passes the
scanning window 34. The images of the open book are reproduced onto
photosensitive paper by the camera means 22. In the reverse part of
the cycle, the carrier 25 is automatically returned to the input
end 27 of the machine. The switches controlling the sequence of the
operating cycle are all shown in their normally off-position in the
various Figures of the drawings.
The carrier 25 is placed on top of the machine 10 whereby the lower
section 92 is positioned in track 95 and trigger finger 93 is
positioned in track 94. After the electrical power to the machine
is turned "on," the automatic operating cycle begins when the
carrier 25, with the open book thereon, is manually moved into
contact with input drive roller 29 of the book transport system 18.
Switch 112, SW4 is switched to the on-position by the forward edge
92' of the lower section 92 of the carrier, thereby providing line
2 voltage for movable arm 81' of control switch 81, SW1 when switch
98 of relay 96 is in the off-position.
The leading edge 82 of the carrier 25 turns control switch 81, SW1
to its on position to connect line 2 voltage to the electromagnet
of copy paper clutch means 68 and to relay 83. The electromagnet
becomes energized causing clutch means 68 to mechanically couple
drive roller 62 of input roller pair 42 (FIG. 3) with the main
chain 60. Roller pair 42 pulls copy paper from roll 39 into the
copy paper pathway 35. Relay 83 also becomes energized and switch
83A and switch 83B move to their respective on-positions. Switch
83A in its on-position places the knife solenoid 83' in a
standby-position. Switch 83B in its on-position provides a hold
voltage (line 2) to maintain relay 83 energized when control switch
81, SW1 returns to its off-position. Relay 83 remains energized
until after knife means 50 has completed its severing
operation.
The copy paper passes through corona section 52 where it is
sensitized. The leading edge of the sensitized copy paper switches
exposure switch 84, SW2 "on" prior to reaching the corona section
52. In the on-position for the exposure switch 84, SW2, light relay
85 is energized causing the high-intensity lamp 80 and high-voltage
power supply 86 to turn "on." The copy paper passes through the
corona section 52 where it is sensitized. The images of the open
book moving across scanning window 34 are transferred by the camera
means 22 onto the sensitized copy paper moving simultaneously
across the image receiving section 48 at substantially the same
rate of speed.
The leading edge of the exposed copy paper turns the hold switch
87, SW3 to its on-position after passing across the image receiving
section 48. When the trailing end of the carrier 25 moves past the
control switch 81, SW1, the control switch returns to its
off-position and provides a connection to line 2 voltage through
switch 83A of relay 83 (which is energized) for knife solenoid 83'.
Knife solenoid 83' becomes energized, causing knife means 50 to
sever a length of copy paper corresponding to the length of the
carrier 25.
The cutting action of knife means 50 opens switch 89 which breaks
the electrical connection of line 2 voltage with the electromagnet
of clutch means 68 and relay 83. The electromagnet and relay 83
becomes deenergized. Clutch means 68 decouples the drive roller 62
or input roller pair 42 from main chain 60 and thereby stops any
further movement of copy paper from the roll 39 into pathway
35.
The forward edge 92' (FIGS. 6 and 7) of the lower section 92 of
carrier 25 turns switch 118, SW5 (FIG. 2) to its on-position. At
the same instant switch 112, SW4 is held in its on-position by the
rear portion of lower section 92. Switch 118, SW5 provides line 2
voltage for control switch 81, SW1, when switch 112, SW4 has
returned to its off-position after the entire lower section 92 has
passed over and switch 98 of relay 96 is in its off-position.
At the instant when substantially the entire carrier 25 has passed
the scanning window 34, the trigger finger 93 turns switch 126, SW6
to the on-position whereby line 2 voltage is impressed at terminal
132 to cause relay 96 to become energized. When this occurs, switch
118, SW5 is still in its on-position.
Switch 97 of relay 96 moving from the off-position to the
on-position, breaks the line 1 voltage connection with book clutch
73 whereby roller 29 is decoupled from the main chain 60. Reverse
motor 66 is turned "on" causing reverse chain 67 to move in the
opposite direction with respect to main chain 60; thereby driving
the drive rollers 29, 30 and 31 counterclockwise as viewed in FIGS.
3 and 5. The carrier 25 now moves into its reverse sweep back to
input end 27.
Switch 98 moving from the off- to the on-position severs the
connection of control switch 81, SW1 with line 2 voltage.
Therefore, the movement of the carrier 25 across switch 81, SW1 in
the reverse part of the operating cycle, has no effect. Switch 98
in the on-position connects a hold voltage (line 2) from switch
118, SW5 to terminal 132 of relay 96, to maintain relay 96
energized when switch 126, SW6 returns to the off-position after
trigger finger 93 has passed over.
Switch 112, SW4 is turned on by the lower section 92 before switch
118, SW5 has returned to the off-position When the lower section 92
has passed over switch 118, SW5 on the reverse sweep, switch 112,
SW4 provides the line 2 hold voltage for relay 96. After the lower
section of the carrier has passed over switch 112, SW4, relay 96
becomes deenergized, the carrier is at rest at input 27 and the
operating cycle is completed.
In the manual copy paper sheet feed embodiment illustrated in FIGS.
9 and 10, the sheet of copy paper must be inserted into the machine
first. The input pair of feed rollers 42c transports the copy paper
from the copy paper input end 36c into the copy paper pathway 35c.
The leading edge 132 of the copy paper switches the standby switch
130, SW8 from its normal-position to the standby-position, causing
the deenergizing of the magnetic means 68b of the clutch means 68c.
The deenergizing of the electromagnet 68b mechanically
disassociates the drive roller 62c of the roller pair 42c from the
drive chain 60c, which instantly stops any further movement of the
copy paper. Thus, when switch 130, SW8 is in the standby-position,
the copy paper if firmly and positively held in place by the input
roller pair 42c. Now, the original document may be inserted into
the machine at the convenience of the operator.
When the original document is inserted into the photocopy machine
10, its leading edge switches the control switch 81, SW1 (FIG. 3)
from its normal or off-position to its on-position. In the
on-position for control switch 81, SW1, the electromagnet 68b of
the clutch means 68c is again energized to cause mechanical
coupling of the drive roller 62c of input roller pair 42c to the
drive chain 60c. Now the sheet of copy paper is automatically
pulled inward by roller pair 42c and transported through the copy
paper pathway 35c at substantially the same speed as the movement
of the original document.
The distance from the standby switch 130, SW8 to the image
receiving section 48c is substantially equal to the distance from
the control switch 81, SW1 (FIG. 3), to the document scanning
window 34. Thus, exact reproduction of the document onto a sheet of
copy paper is achieved without simultaneously inserting the copy
paper with the document. Hence, the operator is able to first
insert the copy paper evenly into pathway 35c and then
subsequently, at his convenience, insert the original document
evenly into the original document pathway 24.
From the drawings and foregoing description, it should be apparent
that a novel book copier has been provided which accomplished the
aforestated objects in an efficient and improved manner. The
carrier 25 on which an open book is positioned, moves across the
scanning window 34 for reproducing increments of the open book onto
sensitized copy paper. The carrier includes actuating or trigger
means which controls the sequence of operation of the machine, and
also the forward and reverse movement of the carrier. Copy paper
may be fed from a roll 39 as shown in FIG. 3, or sheets may be
inserted manually as illustrated by FIGS. 9 and 10.
The description of the preferred embodiment of this invention is
intended merely as illustrative of this invention, the scope and
limits of which are set forth in the following claims.
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