Ricoh sr750 SPECIFICATIONS
BOOKLET FINISHER
(Machine Code: A763)
TABLE OF CONTENTS
1. OVERALL MACH INE INFORMATION..................................A763-1
1.1 SPECIFICATIONS..............................................................................A763-1
1.2 ELECTRICAL COMPONENT DESCRIPTION....................................A763-3
1.3 MECHANICAL COMPONENT LAYOUT.............................................A763-6
2. DETAILED DESCRIPTIONS .................................................A763-7
2.1 JUNCTION GATE MECHANISM........................................................A763-7
2.1.1 SHIFT TRAY MODE..................................................................A763-7
A4/LT sideways or shorter.............................................................A763-7
Longer than A4 sideways...............................................................A763-7
2.1.2 PROOF TRAY MODE ................................................................ A763-8
2.1.3 BOOKLET STITCH MODE........................................................A763-8
2.2 PRE-STACK MECHANISM ................................................................A763-9
2.3 PAPER SHIFT MECHANISM ...........................................................A763-10
2.4 PAPER POSITIONING MECHANISM..............................................A763-11
2.5 STAPLER UNIT MOVEMENT MECHANISM....................................A763-12
2.5.1 DRIVE......................................................................................A763-12
2.5.2 MOVEMENT............................................................................A763-12
Front and Rear Stapling...............................................................A763-12
Tow-position Stapling...................................................................A763-12
2.6 STAPLER .........................................................................................A763-13
2.7 SHIFT TRAY MECHANISM..............................................................A763-14
2.8 BOOKLET UNIT GATE MECHANISM..............................................A763-15
2.9 RELAY ROLLER AND POSITIONING PLATE MECHANISM...........A763-17
2.10 POSITIONING ROLLER MECHANISM..........................................A763-18
2.11 BOOKLET UNIT JOGGER MOVEMENT MECHANISM.................A763-19
2.12 BOOKLET STAPLER UNIT............................................................A763-20
2.13 PAPER FOLDER MECHANISM.....................................................A763-21
3. INSTALLA T ION...................................................................A763-23
3.1 ACCESSORY CHECK.....................................................................A763-23
3.2 INSTALLATION PROCEDURE ....................................................... A763-24
4. REPLACEMENT AND ADJUSTMENT................................A763-29
4.1 REMOVAL........................................................................................A763-29
4.1.1 UPPER DOOR.........................................................................A763-29
4.1.2 UPPER REAR COVER............................................................A763-30
4.1.3 LOWER REAR COVER...........................................................A763-30
4.1.4 TOP COVER............................................................................A763-31
4.1.5 UPPER INNER COVER...........................................................A763-31
4.1.6 SHIFT TRAY UNIT...................................................................A763-32
4.1.7 UPPER SHIFT GUIDE.............................................................A763-33
4.1.8 LOWER SHIFT GUIDE............................................................A763-33
4.1.9 EXIT UNIT................................................................................A763-34
i
SPECIFICATIONS 31 January 2000
4.1.10 BUFFER ROLLER UNIT........................................................A763-35
4.1.11 STAPLER...............................................................................A763-36
4.1.12 FINISHER BOARD ...............................................................A763-37
4.1.13 BOOKLET UNIT.....................................................................A763-38
4.1.14 FOLDER ROLLERS...............................................................A763-40
4.1.15 FOLDER PLATE....................................................................A763-43
Removal.......................................................................................A763-43
Reinstalling...................................................................................A763-44
4.1.16 BOOKLET STAPLER UNIT...................................................A763-45
Removal.......................................................................................A763-45
Adjustment...................................................................................A763-46
4.1.17 BOOKLET BOARD................................................................A763-48
4.1.18 POSITIONING PLATE UNIT..................................................A763-48
4.1.19 1ST AND 2ND BOOKLET UNIT GATES ...............................A763-49
4.2 ADJUSTMENT..................................................................................A763-50
4.2.1 SHIFT TRAY HEIGHT .............................................................A763-50
4.2.2 JOGGER FENCE POSITION...................................................A763-51
4.2.3 STAPLING POSITOIN.............................................................A763-52
4.2.4 BOOKLET STAPLING POSITION...........................................A763-53
ii
January 31, 2000 SPECIFICATIONS
1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Paper Size:
Tray Modes Sizes
Proof tray A3 to A5, DLT to HLT
No staple mode A3 to A5, DLT to HLT
Paper Weight:
Staple
Shift tray
Booklet tray A3 to B5, DLT to LT
Tray Weight
Stack mode 52 g/m2 to 163 g/m2, 14 to 42 lb
Staple mode 64 g/m2 to 80 g/m2, 17 to 21 lb
Saddle stitch mode 64 g/m2 to 80 g/m2, 17 to 21 lb
Mode
Top or
bottom
2 staple
64 g/m
only)
A3 to B5 lengthwise, DLT to HLT
A3, A4 sideways, B5 sideways,
DLT to HLT sideways
2
to 128 g/m2, 17 to 34 lb (Cover sheet
Paper Capacity (80 g/m2, 20 lb):
Tray Modes Paper size Capacity
Proof tray
No staple
Shift tray
Staple
tray
One size
Mixed sizes
Staple Capacity (80 g/m2, 20 lb):
Modes Paper size Total capacity
Staple
Saddle stitch 2-15 sheets
A4-S, LT-S or shorter 2-50 sheets
A4-L, LT-L or longer 2-30 s heets
Staple
A4-S, LT-S or shorter 150 sheets
A4-L, LT-L or longer 75 sheets
A4-S, LT-S or shorter 1000 sheets
A4-L, LT-L or longer 500 sheet
A4-S, LT-S or shorter 750 sheets
A4-L, LT-L or longer 500 sheets
1-5 sheets 25 sets
6-10 sheets 15 sets
11-15 sheets 10 sets
(-L”: Lengthwise ,-S: Sideways)
Options
(-L”: Lengthwise, -S: Sideways)
A763-1
SPECIFICATIONS January 31, 2000
Staple Position: Staple mode: 3 positions
1 staple: 2 positions (Front, Rear)
2 staples: 1 position
Saddle stitch mode: 1 position
Staple Replenishment: Cartridge
Staple: 5000 staples
Saddle stitch: 2000 staples
Power Source: 24Vdc (from copier)
Power Consumption: 60 W
Dimensions
800 x 728 x 980 mm, 31.5 x 28.7 x 38.6 inches
(W x D x H) :
Weight: 45 kg
A763-2
January 31, 2000 ELECTRICAL COMPONENT DESCRIPTION
1.2 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function
Motors
M1 Entrance Drives the entrance roller.
M2 Transport Roller Drives the 1st and 2nd transport rollers.
M3 Buffer Roller Drives the buffer roller and the proof tray exit roller.
M4 Jogger Moves the jogger fence.
M5 Stapler Moves the stapler unit.
M6 Staple Hammer Drives the staple hammer in the stapler unit.
M7 Guide Plate Moves the upper exit guide plate up and down.
M8 Exit Motor Drives the exit roller.
M9 Tray Lift Moves the shift tray up and down.
M10 Booklet Transport Drives the relay roller and the positioning roller.
M11 Positioning Plate Moves the positioning plate up and down.
M12 Shutter Guide Moves the shutter guide up and down.
M13 Booklet Jogger Drives the jogger fences.
M14 Front Stapler Drives the staple hammer in the front stapler.
M15 Rear Stapler Drives the staple hammer in the rear stapler.
M16 Folder Roller Drives the folder rollers.
M17 Folder Plate Moves the folder plate.
Sensors
S1
S2
S3
S4 Staple Tray Paper Detects copy paper in the stapler tray.
S5 Jogger HP Detects the home position of the jogger rear fence.
S6 Stapler Unit HP Detects the home position of the stapler unit.
S7 Staple Hammer HP Detects the home position of the staple hammer.
S8 Staple Position Detects when the stapler is in the stapling position.
S9 Upper Exit Guide Detects the upper position of the upper exit guide.
S10 Exit Guide Motor Generates pulses to check the exit guide motor.
S11 Exit Checks for misfeeds at the shift tray.
S12 Exit Motor Generates pulses to check the exit motor.
S13 Shift Tray Paper Detects copy paper on the shift tray.
S14
S15 Shift Tray HP Detects the home position of the shift tray.
S16
S17
Entrance Detects copy paper entering the finisher and
detects misfeeds.
Buffer Roller
Entrance
Straight Path Detects copy paper passig under the buffer roller
Shift Tray height Detects when the top of the copy paper stack in the
Lift Motor 1 Generates pulses to check the lift motor, to control
Lift Motor 2 Generates pulses to check the lift motor, to control
Detects copy paper entering the buffer roller or
proof tray exit guide and detects misfeeds.
and detects misfeeds.
shift tray is at the correct height.
lift motor position, and to detect the motion
direction of shift tray.
lift motor position, and to detect the motion
direction of shift tray.
Options
A763-3
ELECTRICAL COMPONENT DESCRIPTION January 31, 2000
Symbol Name Function
S18 Proof Tray Exit Checks for misfeeds at the proof tray.
S19
S20
Proof Tray Limit Detects when the paper stack height in the proof
tray is at its upper limit.
Finisher Set
Detects whether the finisher is installed into the
copier or not.
S21 Shutter Detects whether the shutter is closed or not.
S22 Trailing Edge 1 Detects the relay roller release timing.
S23 Trailing Edge 2 Detects the relay roller release timing.
S24 Trailing Edge 3 Detects the relay roller release timing.
S25 Booklet Entrance Check for paper misfeeds.
S26
S27
S28
S29
Positioning Plate
Paper
Positioning Plate
HP
Positioning Roller
Booklet Jogger HP
Detects copy paper in the positioning plate.
Detects the home position of the positioning plate.
Detects whether the positioning roller is released or
not.
Detects the home position of the jogger fences in
the booklet unit.
S30 Front Staple End Detects staples in the cartridge of the front stapler.
S31 Rear Staple End Detects staples in the cartridge of the rear stapler.
S32 Stapler Unit Set Detects whether the stapler unit is installed or not.
S33 Shutter Guide HP Detects the home position of the shutter guide.
S34 Folder Plate HP Detects the home position of the folder plate.
S35 Folder Plate Return Detects the return position of the folder plate.
S36
S37
Folder Plate Motor Generates pulses to check the folder motor and its
position.
Folder Roller
Detects the position of the folder roller.
Position
S38 Folder Roller HP Detects the home position of the folder roller.
S39
Folder Roller Motor Generates pulses to check the folder roller motor
and its position.
S40 Booklet Exit Checks for misfeeds at the booklet tray.
S41 Booklet Tray Paper Detects copy paper in the booklet tray.
S42
Booklet Entrance
Guide
Detects whether the booklet entrance guide is
opened or not.
S43 Lower Door Detects whether the lower door is opened or not.
S44
Booklet Exit Cover Detects whether the booklet exit cover is opened or
not.
Switches
SW1
Upper Cover
Safety
Cuts the +24V for the motor.
SW2 Shift Tray Safety Cuts the +24V for the motor.
SW3 Shutter Position Cuts the +24V for the motor.
SW4 Upper Exit Guide 1 Cuts the +24V for the motor.
SW5 Upper Exit Guide 2 Cuts the +24V for the motor.
SW6
Shift Tray Upper
Limit
Cuts the +24V for the lift motor.
A763-4
January 31, 2000 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function
SW7 Cartridge Set Detects the staple cartridge in the stapler.
SW8 Staple End Detects the staples in the cartridge.
SW9 Thermo Detects the lift motor temperature.
SW10 Lower Door Safety Cuts the +24V for the motor.
SW11
Booklet Entrance
Guide Safety
Cuts the +24V for the motor.
SW12 Booklet Exit Safety Cuts the +24V for the motor.
SW13
SW14
Front Staple
Hammer HP
Rear Staple
Hammer HP
Detects the home position of the staple hammer in
the front stapler unit
Detects the home position of the staple hammer in
the rear stapler unit
Solenoids
SOL1 Book let Gate Drives the booklet gate.
SOL2
Buffer Roller
Entrance Gate
Drives the buffer roller entrance gate.
SOL3 Proof Tray Gate Drives the proof tray gate.
SOL4
Buffer Roller Exit
Gate
Drives the buffer roller exit gate.
SOL5 Tr ansport Belt Moves the transport belt to the stopper.
SOL6 Paddle Releases the paddle stopper.
SOL7
SOL8
SOL3
Front Guide
Release
1st Booklet Unit
Gate
2nd Booklet Unit
Gate
Releases the front guide plate.
Drives the 1st booklet unit gate.
Drives the 2nd booklet unit gate.
SOL4 Relay Roller Releases the relay roller.
PCBs
PCB1 Finisher Controls the upper unit.
Lift Motor Sensor Generates pulses to check the lift motor, to control
PCB2
lift motor position, and to detect the motion
direction of the shift tray.
PCB3 Booklet Unit Controls the booklet unit.
PCB4
Trailing Edge
Sensor
Detects the relay roller release timing.
Others
HR1 Stapler Interface Interfaces the stapler and the finisher board.
A763-5
Options
January 31, 2000 MECHANICAL COMPONENT LAYOUT
1.3 MECHANICAL COMPONENT LAYOUT
6
5
7
8
4
9
3
27
15
16
10
11
2
12
1
13
24
23
25
26
17
18
19
20
21
14
A763V500.WMF
A763V501.WMF
22
1. Shutter
2. Shift Tray
3. Lower Exit Roller
4. Upper Exit Guide
5. 2nd Transport Roller
6. Proof Tray
7. Buffer Roller Exit Gate
8. Buffer Roller
9. Proof Tray Gate
10. Buffer Roller Entrance Gate
11. Booklet Gate
12. 1st Transport Roller
13. Stapler Unit
14. Transport Belt
15. Booklet Unit Entrance Roller
16. 1st Booklet Unit Gate
17. 2nd Booklet Unit Gate
18. Anvil
19. Folder Plate
20. Positioning Plate
21. Shutter Guide
22. Booklet Tray
23. Exit Guide
24. Positioning Roller
25. Folder Roller
26. Relay Roller
27. Booklet Stapler Unit
Options
A763-7
January 31, 2000 JUNCTION GATE MECHANISM
2. DETAILED DESCRIPTIONS
2.1 JUNCTION GATE MECHANISM
2.1.1 SHIFT TRAY MODE
A4/LT sideways or shorter
[B]
[C]
A763D564.PCX
The booklet gate [A] and buffer roller entrance gate [B] are closed and the copy
paper goes directly to the shift tray [C].
[A]
Longer than A4 sideways
[F]
[E]
[D]
A763D565.PCX
The booklet gate, proof tray gate [D], and buffer roller exit gate [E] are closed, and
the buffer roller entrance gate is opened. The copy paper passes through the
buffer roller [F]. This paper path creates a distance between copies.
A763-7
Options
JUNCTION GATE MECHANISM January 31, 2000
2.1.2 PROOF TRAY MODE
[D]
The booklet gate [A] is closed. The buffer roller
entrance gate [B] and proof tray gate [C] are
closed. The copy paper goes to the proof tray [D].
[C]
[B]
2.1.3 BOOKLET STITCH MODE
The booklet gate is opened and the copy paper
goes to the booklet unit.
[A]
A763D101.WMF
A763-8
A763D102.WMF
January 31, 2000 PRE-STACK MECHANISM
2.2 PRE-STACK MECHANISM
This mechanism improves productivity in staple mode and shift mode.
During stapling, the copier has to wait. This mechanism reduces the wait by
holding the first two sheets of a job while the previous job is still being stapled. It
only works during the second and subsequent sets of a multi-set copy job.
[B]
[C]
[A]
A763D566.PCX
The buffer roller entrance gate [A] and buffer roller exit gate [B] are opened. Then,
the 1st sheet of paper goes around the buffer roller [C].
[D]
A763D567.PCX
When the 2nd copy [D] comes to the buffer roller, the buffer roller exit gate is
closed. The two sheets of paper go to the shift tray [E] or staple tray [F].
[E]
[F]
A763-9
A763D568.PCX
Options
PAPER SHIFT MECHANISM January 31, 2000
2.3 PAPER SHIFT MECHANISM
[B]
[C]
A763D569.PCX
[A]
[F]
A763D104.WMF
[G]
[A]
A763D570.PCX
In sort and stack mode, only the 1st sheet of copy paper from the 2nd set is shifted
to the front to separate each set of copies.
When the copy paper comes into the staple tray [A], the upper exit guide [B] (whi ch
contains the upper exit roller) opens. The paper switches back to the stopper [C].
Then the front guide release solenoid [D] turns on and the front guide [E] is
released, the shift motor moves jogger fence [F] to the front, and the copy paper
shifts to the front by 30 mm.
[E]
[D]
After copy paper has been shifted, the upper exit guide closes and the lower exit
roller [G] turns in the opposite direction to feed out the copy paper.
A763-10
January 31, 2000 PAPER POSITIONING MECHANISM
2.4 PAPER POSITIONING MECHANISM
[F]
[C]
[A]
[B]
[E]
[D]
A763D105.WMF
A763D106.WMF
[G]
[H]
[G]
A763D108.WMF
A763D111.WMF
When the tr ailing edge of the 1st copy paper passes the 2nd tran sport roller [A],
the lower exit roller [B] stops and turns reverse. At the same time, the upper guide
plate motor turns on and opens the upper exit guide [C]. The copy paper is sent to
the stopper [D] by the lower exit roller and feed belt [E], and it is aligned the by
jogger motor.
The feed belt solenoid [F] turns on to move the feed belt to the stopper. This
function prevents excessive buckling of the paper between belt and stopper.
The paddles [G] send the paper to the stopper starting from the 2nd copy paper.
When the trailing edge of the 2nd copy paper passes the 2nd transport roller, the
paddle solenoid [H] turns on and the drive from the transport roller transmits to the
paddle shaft.
A763-11
Options
STAPLER UNIT MOVEMENT MECHANISM January 31, 2000
2.5 STAPLER UNIT MOVEMENT MECHANISM
2.5.1 DRIVE
[A]
The stapler motor [A] drives the
stapler unit drive gear [B] via a timing
belt. The stapler unit guide has a rack
gear [C]. The stapler unit moves along
the rack gear via the stapler unit [D]
drive gear.
[D]
A763D107.WMF
2.5.2 MOVEMENT
[B]
[C]
Front and Rear Stapling
When the print key is pressed, the
stapler unit moves to the center. The
stapler unit moves to the front (or rear)
stapling position when the copy paper
comes into the finisher and stays until
the copy job finishes. It returns to home
position when the job is finished.
Tow-position Stapling
When the print key is pressed, the
stapler unit moves to the center. The
stapler unit moves to the rear stapling
position first and moves to the front
stapling position when stapling. Then it
goes back to the center until the copy
job finishes. It returns to home position
when the job is finished.
[A]
A763D114.WMF
A763-12
January 31, 2000 STAPLER
2.6 STAPLER
[C]
[D]
[B]
A763D109.WMF
[D]
[A]
[A]
[E]
[G]
A763D571.PCX
[F]
A763D110.WMF
The staple hammer motor [A] drives the cam [B] via 2 gears [C, D] and the guide
roller on the staple hammer moves on the cam [D] . When the guide roller moves to
the highest position on the cam, the copy paper is stapled.
The stapler unit contains the cartridge set switch [E], staple end switch [F] and
staple position sensor [G].
The staple position sensor detects whether the staple sheet has come to the staple
unit or not.
A763-13
Options
SHIFT TRAY MECHANISM January 31, 2000
2.7 SHIFT TRAY MECHANISM
[A]
[H]
[C]
[F]
[E]
[D]
A763D576.PCX
[B]
[G]
A763D572.PCX
The guide gear [A] on which the shift tray is mounted is driven by the lift motor [B]
via gear [C].
The finisher board detects the direction of the motor rotation and motor position
using the lift motor sensors 1 [D] and 2 [E].
The lift motor contains a thermoswitch [F]. When it detects 73.5º C, the finisher
board stops the lift motor until its temperature reaches approximately 40º C.
The shutter position switch [G] cuts the lift motor power for safety when the upper
exit guide plate opens.
The shift tray height sensor [H] detects the distance between the sensor and the
top of the copy paper on the shift tray.
A763-14
January 31, 2000 BOOKLET UNIT GATE MECHANISM
2.8 BOOKLET UNIT GATE MECHANISM
[A]
[B]
[D]
A763D550.PCX
A763D551.PCX A763D552.PCX
[C]
[A]
A763D563.PCX
There are two junction gates [A] and three paper sensors [B] at the entrance area
of the booklet unit.
Depending on paper size, the appropriate gate solenoid(s) [C] are energized to
close the gate(s) in order to transport paper to the positioning plate [D] through a
suitable paper path.
This is done for the following reasons:
• To detect the trailing ed ge of paper with the correct sensor.
• To prevent the leading edge of the next sheet from hitting the trailing edge of the
previous sheets on the positioning plate.
A763-15
Options
BOOKLET UNIT GATE MECHANISM January 31, 2000
The following tables show the relation between paper sizes and solenoids/sensors:
A3, 11" x 17" B4, 11" x 14" A4, 8
" x 11"
1/2
1st Solenoid (Gate) OFF (Opened) ON (Closed) ON (Closed)
2nd Solenoid (Gate) OFF (Opened) OFF (Opened) ON (Closed)
A3, 11" x 17" B4, 11" x 14" A4, 8
" x 11"
1/2
Trailing Edge Sensor 1 ON ON ON
Trailing Edge Sensor 2 OFF ON ON
Trailing Edge Sensor 3 OFF OFF ON
A763-16
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