Ricoh st31 SPECIFICATIONS
SORTER STAPLER
(Machine Code: A821)
21 September 1998 SPECIFICATIONS
1. OVERALL MAHCINE INFORMATION
1.1 SPECIFICATIONS
Configuration: Console
Number of Bins: 20 + Proof Tray
Paper for Proof Tray:
Size: Maximum: A3, 11" x 17"
Minimum: A6 lengthwise, 5
Weight: 52 ~ 200 g/m2, 14 ~ 53 lb.
Capacity: 250 sheets (80 g/m2, 20 lb.)
Paper for Bins: See the table below.
Sort Stack Staple Punch
Maximum paper
size
Minimum paper
size
Maximum paper
weight
Minimum paper
weight
Maximum
capacity
A3, 11" x 17" A3, 11" x 17" A3, 11" x 17" A3, 11" x 17"
Sideways:
A4, 8
1/2
" x 11"
Lengthwise:
A5, 5
200 g/m
" x 8
1/2
2
, 53 lb. 200 g/m2, 53 lb. 163 g/m2, 43 lb.
1/2
"
Sideways:
A4, 8
1/2
" x 11"
Lengthwise:
A5, 5
1/2
" x 8
1/2
B5, 8
"
52 g/m2, 14 lb. 52 g/m2, 14 lb. 52 g/m2, 14 lb. 52 g/m2, 14 lb.
All sizes:
50 sheets/bin
2 sided copies:
40 sheets/bin
All sizes:
50 sheets/bin
2 sided copies:
40 sheets/bin
All sizes
50 sheets/bin
2 sided copies:
40 sheets/bin
1/2
1/2
" x 8
1/2
"
" x 11" A5 (2 holes)
B5 sideways
8
" x 11"
1/2
sideways (3
holes)
128 g/m
(2 holes)
104 g/m
2
, 34 lb.
2
, 28 lb.
(3 holes)
All sizes:
40 sheets/bin
2 sided copies:
35 sheets/bin
A821-1
Options
SPECIFICATIONS 21 September 1998
Staple Position:
a
c
d
e
a = 6 3 mm
A821V500.WMF
A821V501.WMF
b
b = 6 3 mm
c = 6 3 mm
d = 66 3 mm
a
e = 132 2 mm
f = 6 3 mm
g = 116.5 2 mm
g
= 45 5
f
g
Staple Replenishment: Cartridge refill (5,000 piec es/cartridge)
Power Source: DC24 V (from copier)
Power Consumption: Average:
less than 60 W (without punch)
less than 70 W (with punch)
Maximum:
in sort/stack mode:
less than 60 W (without punch)
less than 70 W (with punch)
in staple mode:
less than 45 W
A821-2
21 September 1998 SPECIFICATIONS
Dimensions (W x D x H): 566 x 583 x 990
Weight: Approximately 50 kg
Punch Position:
a
2 Holes (European version)
a = 12 3 mm
A821V502.WMF
b = 40 3 mm
c = 80 1 mm
d
b
c
3 Holes (U.S.A. version)
a = 9.5 (
c = 216 (8
") 3 mm
3/8
") 1 mm
1/2
d’
d = 108 (4
") 1 mm
1/4
d’ = 3 mm
Punch Hole Size
2 Holes: = 6.5 0.5 mm
3 Holes: = 8.0 0.5 mm
A821-3
Options
COMPONENT LAYOUT 21 September 1998
1.2 COMPONENT LAYOUT
1.2.1 MECHANICAL COMPONENT LAYOUT
2
1
3
15
4
14
13
12
5
6
7
8
9
10
11
1. Proof Tray
2. Proof Exit Rollers
3. Proof Transport Rollers
4. Upper Entrance Guide
5. Turn Gate
6. Lower Entrance Guide
7. Sorter Transport Rollers
8. Sorter Exit Rollers
A821V503.WMF
9. Staple Unit
10. Grip Assembly
11. Helical Wheels
12. Jogger Plate
13. Bins
14. Upper Guide Plate
15. Punch Unit (Punch version only)
A821-4
21 September 1998 COMPONENT LAYOUT
1.2.2 DRIVE LAYOUT
16
15
3
2
4
1
5
14
13
12
1. Main Motor
2. Main Drive Belt
3. Proof Drive Belt
4. Sorter Drive Belt
5. Helical Wheels
6. Staple Unit Drive Belt
11
9
10
A821V504.WMF
9. Bin Drive Motor
10. Wheel Drive Belts
11. Jogger Motor
12. Staple Unit Drive Motor
13. Jogger Drive Belts
14. Bin Rear Plate Drive Motor
6
7
8
Options
7. Gripper Motor
8. Grip Drive Belt
15. Sorter Exit Drive Belt
16. Sorter Exit Motor
A821-5
ELECTRICAL COMPONENT DESCRIPTION 21 September 1998
1.3 ELECTRICAL COMPONENT DESCRIPTION
Refer to the electrical component layout on the reverse side of the point-to-point
diagram for the location of the components using the symbols and index numbers.
Symbol Name Function Index No.
Motors
M1 Tr ansport Drives the paper transport rollers. 32
M2 Exit Delivers the Paper into the bin. 26
M3 Bin Drives the bins up and down. 19
M4
M5 Bin Rear Plate Drives the bin rear plate up and down. 27
M6 Gr ip Grips the paper. 15
M7
M8
M9
M10 Punch Drives the punch shaft and roller. 31
Jogger Drives the jogger plate to jog the copies
against the front side plate.
Grip Shift Drives the grip unit forward and backward
into the bin.
Stapler
Stapler Unit Drives the stapler unit according to the
Feeds the staples and drive the stapler
hammer.
staple position and angle.
22
17
11
24
Switches
SW1 Door Safety Cuts the dc power when front door is open. 6
SW2 Cartridge Set Detects installation of the staple cartridge. 8
SW3 Staple End Detects the staple end. 9
Solenoids
SOL1
Sensors
S1 Entrance Detects the paper miss-feeds. 5
S2
S3 Proof Exit Detects the paper miss-feeds. 4
S4 Bin HP Detects if the bins are in the home position. 23
S5 Wheel Sensor Detects the bin position. 20
S6
S7 Grip HP Detects if the grip is in the home position. 16
S8
S9
S10
S11
Turn Gate Opens and closes the turn gate to direct the
copies into either the proof tray or bins.
Bin Jam Detects the miss-feeds and detects if there
is the paper in the bin.
Jogger HP Det e ct s if the jogger plat e is in the home
position.
Grip Shift MotorHPDetects if the grip unit is in the home
position.
Bin Rear Plate
Close
Bin Rear Plate
Open
Stapler HP
Detects if the bin rear plate is in the closed
position.
Detects if the bin rear plate is in the open
position.
Detects if the stapler hammer is in the home
position.
1
21
25
14
28
29
10
A821-6
21 September 1998 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function Index No.
S12
Stapler Unit HP
Detects if the stapler unit is in the home
position.
18
S13 Paper Detects whether copies are under hammer. 13
S14
Stapler Unit
Pull-out Position
Detects if the stapler unit is in the pullout
position.
12
S15 Punch HP Detects if the punch is in the home position. 33
S16
Punch waste
Overflow
Detects punch waste overflow and detects
whether the waste hopper is set or not.
7
PCBs
PCB1 Main Controls all sorter stapler functions. 30
PCB2
Bin Jam Sensor
LED
Provides the light to the bin jam sensor.
3
PCB3 Punch Control Controls the punch function. 2
A821-7
Options
BASIC OPERATION 21 September 1998
2. DETAILED DESCRIPTION
2.1 BASIC OPERATION
2.1.1 NORMAL (PROOF MODE) AND SORT/STACK MODE
[D]
[C]
[A]
[B]
A821D500.WMF
Copies exiting the copier pass through the entrance guide plates [A] to the turn
gate section. The turn gate [B] will send copies either to the proof tray or to the
bins, depending on the mode.
Normal (Proof) Mode - (From the Turn Gate Section to the Proof Tray)
The turn gate solenoid energizes to turn the turn gate clockwise after pressing the
Start key. The main motor turns counter-clockwise to rotate the vertical transport
rollers [C] and proof exit roller [D]. The turn gate directs copies through the proof
transport section to the proof tray.
A821-8
21 September 1998 BASIC OPERATION
Sort Mode (From the Turn Gate Section to the Bins)
[A]
[F]
[E]
[D]
[B]
[H]
[C]
[I]
[G]
A821D501.WMF
In this mode, the turn gate solenoid remains off to maintain the turn gate [A] in the
upper position. The main motor turns clockwise to rotate the sorter transport rollers
[B] and the exit motor rotates the exit rollers [C].
The turn gate directs copies to the sorter bins through the sorter transport section,
delivering the first copy between the top bin [D] and the upper guide plate [E]. The
jogger plate [F] then jogs to square the copies each time. Before the next copy
reaches the sorter exit roller, the bin drive motor [G] rotates and advances the bin
one step (the helical wheels [H] rotate once). When the cut out of the actuator
reaches below the wheel sensor [I], the bin drive motor turns off.
The bin advances with each delivered copy.
Options
A821-9
BASIC OPERATION 21 September 1998
Stack Mode (From the Turn Gate Section to the Bins)
[A]
[F]
[E]
[D]
[B]
[H]
[C]
[I]
[G]
A821D502.WMF
As with sort mode, the turn gate solenoid stays off and the turn gate [A] stays up
after pressing the start key. The main motor turns clockwise to rotate the sorter
transport rollers [B] and the exit motor rotates the exit rollers [C].
The turn gate directs copies to the sorter bins through the sorter transport section,
delivering the copies between the top bin [D] and the upper guide plate [E]. The
jogger plate [F] then jogs back and forth to square the copies each time.
All copies from the copy run then feed into the first bin. When the final copy is
delivered, the wheel drive motor [G] turns and advances the bin one step (the
helical wheels [H] rotate once). When the cut out of the actuator reaches below the
wheel sensor [I], the bin drive motor turns off.
A821-10
21 September 1998 BASIC OPERATION
2.1.2 STAPLE MODE
A821D503.PCX
[A]
[B]
A821D504.PCX
After jogging the final set of copies, the staple unit staples the stacked copies as
follows: The grip arms move inside the front side plate and catch the paper. The
rear bin plate [A] is turned so it is flat with the sorter bin. The grip assembly brings
the copies down underneath the stapler [B]. The staple unit changes the position
(the position varies depending on the copy size and staple mode) and the stapler
staples the copies.
A821-11
Options
BASIC OPERATION 21 September 1998
[A]
A821D505.PCX
The grip assembly brings the stapled copies back to the bin and the bin rear plate
[A] returns to the original position.
The grip assembly releases the copies and return to outside the front side plate so
as not to disturb the bin movement.
The bin advances one step.
After stapling the final set of copies, the staple unit returns to the home position.
There are two staple modes:
1) Automatic stapling:
In ADF mode, when the staple mode is selected before pressing the start
key, copies will be delivered to each b in and stapled automatically.
2) Manual stapling:
In sort mode, after sorting the copies in the bins, the stapling mechanism will
staple them after the user presses the manual staple key and selects the
staple position. In stack mode, manual stapling is impossible.
A821-12
21 September 1998 TURN GATE SECTION
2.2 TURN GATE SECTION
[I]
[A]
[D]
[G]
[H]
[C]
[B]
A821D506.WMF
[C]
[E]
[F]
A821D507.WMF
The turn gate [A] sends copies to the proof tray or the sorter bins depending on the
mode. In proof mode, the turn gate solenoid [B] turns on and the main motor [C]
turns clockwise after pressing the start key.
The turn gate [A] directs copies upward through the proof transport section to the
proof tray. In this mode, both the proof drive belt [D] and sorter drive belt [E]
transmit the main motor drive. However, the one-way clutches in the drive gears [F]
for each sorter transport roller do not transmit the drive to the sorter transport
rollers.
In the sort, stack and staple modes, the turn gate solenoid stays off to direct copies
downward to the sorter transport section. After the user presses the start key, the
main motor [C] turns counter-clockwise. In this mode, the one-way clutch in the
pulley [G] prevents the main motor drive from transmitting to the proof drive belt
[D].
The entrance [H] and the proof exit [I] sensors monitor the paper jam.
A821-13
Options
BIN DRIVE MECHANISM 21 September 1998
2.3 BIN DRIVE MECHANISM
[E]
[E]
[D]
15
30
[G]
[A]
45
[F]
40
40
A821D508.WMF
[B]
[C]
15
15
A821D509.WMF
The bin drive mechanism moves the bins up and down to receive copies. The main
components in this mechanism are the bin drive motor [A], the two helical wheels
[B], the wheel sensor [C], and the bins [D] themselves. There are four pins on each
bin. Two of them fit in the slot on the helical wheels. Other two pins fit into the slots
[E] of the side frames. The pins slide up and down in these slots.
Two timing belts transmit the drive from the bin drive motor to the two helical
wheels. When it rotates clockwise, the bins lift (black arrow) and when it rotates
counter-clockwise, the bins lower (white arrow). There is a wheel sensor actuator
on the front helical wheel; the actuator has a slot, which detects when the helical
wheel has rotated 360 degrees.
When the bins advance, the helical wheels rotate once (360 degrees) for each
step.
The spiral pitch on the helical wheel is greater when bins are at the staple and
paper exit area than elsewhere. Consequently, the amount of bin shift is greater
when bins are at the staple and paper exit area. This leaves enough space to
staple [F] and stack paper [G] and reduces the total machine height.
A821-14
21 September 1998 BIN HOME POSITION
2.4 BIN HOME POSITION
[A]
[E]
A821D510.WMF
[B]
[D]
[C]
A821D511.WMF
The bin HP sensor [A] and the wheel sensor [B] ensure that the sorter exit roller is
between the upper guide plate [C] and the 1st bin [D] when all the bins are in their
home position.
After turning on the main switch, the bin lift motor [E] lowers the bins (turns
counter-clockwise) until the bottom bin actuates the bin HP sensor. Then, the bin
lift motor raises the bins (turns clockwise) until the wheel sensor activates.
Consequently, the bins are in the home position.
A821-15
Options
JOGGER SECTION 21 September 1998
2.5 JOGGER SECTION
[B]
Copier Main
Motor
ON
[A]
Jam Sensor
A821D512.WMF
Jogger Motor
300 ms
A821D513.WMF
After pressing the start key in the sort, staple and stack modes, the copier sends
the paper size information to the sorter/stapler. In accordance with this data, the
jogger motor [A] drives the jogger plate [B] from the jogger HP to a width 10 mm
wider than the selected paper. 300 ms after the trailing edge of the copy passes
underneath the jam sensor, the jogger motor rotates forward and in reverse. This
makes the jogger plate push all the copies against the front side plate to square the
sheets. When the jogger plate pushes the paper, the plate shifts to a position 5 mm
wider than the paper size when the bins lift. It shifts to a position 1 mm narrower
than the paper size when the bins lowers.
The jogger plate returns to 10 mm away from the selected paper size for the next
copy.
When the bin sensor dete cts that all copies are no longer in the bins after jogging
finishes, the jogger plate returns to its home position.
A821-16
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