Ricoh st33 Service Manual

SORTER STAPLER

(Machine Code: A831)

30 March, 1999 SPECIFICATIONS

1. OVERALL MAHCINE INFORMATION

1.1 SPECIFICATIONS

Configuration: Console
Number of Bins: 20 + Proof Tray
Paper for Proof Tray:

Size: Maximum: 13" x 19"

Minimum: A6 lengthwise, 5
Weight: 64 ~ 157 g/m2, 17 ~ 42 lb.
Capacity: 250 sheets (80 g/m2, 20 lb.)

Paper for Bins: See the table below.

Sort Stack Staple

Maximum paper size 13" x 19" 13" x 19" 13" x 19"
Minimum paper size

Maximum paper weight 250 g/m2, 66 lb. 250 g/m2, 66 lb. 200 g/m2, 53 lb.
Minimum paper weight 64 g/m2, 17 lb. 64 g/m2, 17 lb. 64 g/m2, 17 lb.
Maximum capacity

Sideways:
A5, 5
Lengthwise:
A5, 5

All sizes:
50 sheets/bin
2 sided copies:
40 sheets/bin

1/2

1/2

" x 8
" x 8

1/2

1/2

"

"

Sideways:
A5, 5
Lengthwise:
A6, 8

All sizes:
50 sheets/bin
2 sided copies:
40 sheets/bin

1/2

1/2

" x 8
" x 5

1/2

1/2

" x 8

1/2

B5, 8

"
"

All sizes
50 sheets/bin
2 sided copies:
40 sheets/bin

1/2

"

1/2

" x 11"

Staple Position:

A831V500.WMF

a

➀

➂

➂

c

Staple mode 1 ...........................

d

Staple mode 2 ...........................

Staple mode 3 ...........................

e

➀
➁
➂

Peripherals

a = 6 ± 3 mm
b = 6 ± 3 mm

➁

b

φ

c = 6 ± 3 mm
d = 66 ± 3 mm
e = 132 ± 2 mm
φ = 45 ± 5°

A831-1

SPECIFICATIONS 30 March, 1999

Staple Replenishment: Cartridge refill (5,000 pieces/cartridge)
Power Source: DC24 V (from copier)
Power Consumption: Average:

less than 60 W
Dimensions (W x D x H): 600 x 615 x 980
Weight: Approximately 65 kg

A831-2

30 March, 1999 COMPONENT LAYOUT

1.2 COMPONENT LAYOUT

1.2.1 M ECHANICAL COMPONENT LAYOUT

2

1

3

10

9

4

8

5

6

7

A821V503.WMF

Peripherals

1. Proof tray

2. Reverse unit

3. Turn gate

4. Entrance sensor

5. Staple unit

6. Grip assembly

7. Bin drive motor

8. Helical wheels

9. Bins

10. Upper guide plate

A831-3

COMPONENT LAYOUT 30 March, 1999

1.2.2 DRIVE LAYOUT

15

14
13

2

1

3

4

5

6

12

1. Main motor

2. Main drive belt

3. Drive belt 1

4. Drive belt 2

5. Sort timing belt 1

6. Sort timing belt 2

7. Staple unit drive belt

8. Gripper motor

11

9

10

A831V504.WMF

9. Gripper drive motor

10. Bin drive motor

11. Jogger motor

12. Wheel drive belts

13. Bin rear belt

14. Bin rear belt drive motor

15. Sorter exit motor

7

8

A831-4

30 March, 1999 BASIC OPERATION

2. DETAILED DESCRIPTION

2.1 BASIC OPERATION

2.1.1 NORMAL (PROOF MODE) AND SORT/STACK MODE

[D]

[C]

[A]

[B]

A831D151.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)

Peripherals

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.

A831-5

BASIC OPERATION 30 March, 1999

Sort Mode (From the Turn Gate Section to the Bins)

[F]

[E]

[D]

[H]

[A]

[B]

[C]

[I]

[G]

A831D152.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.

A831-6

30 March, 1999 BASIC OPERATION

Stack Mode (From the Turn Gate Section to the Bins)

[F]

[E]

[D]

[H]

[A]

[B]

[C]

[I]

[G]

A831D152.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.

A831-7

Peripherals

BASIC OPERATION 30 March, 1999

Reverse Mode (From the Turn Gate Section to the Bins)

[D]

[G]

[E]

[F]

[C]

[A]

[B]

A831D152.WMF

As with reverse mode, the turn gate [A] stays up after pressing the start key. The
main motor turns clockwise to rotate the sorte r transport rollers [B]. T hen reverse
solenoid energizes to the reverse gate [C] counter-clockwise after pressing the
start key. The reverse motor rotates the reverse rollers [D] to transport t he paper
into the reverse unit [E]. Then the reverse gate is released. Main motor and reverse
motor rotates counter-clockwise to deliver the copies between the top bin [F] and
the upper guide plate [G].

A831-8

30 March, 1999 BASIC OPERATION

2.1.2 STAPLE MODE

[A]

A831D503.PCX

[B]

A831D504.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.

Peripherals

A831-9

BASIC OPERATION 30 March, 1999

[A]

A831D505.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 bin 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.

A831-10

30 March, 1999 TURN GATE SECTION

2.2 TURN GATE SECTION

A831D104.WMF

[A]

[H]

[C]

[B]

A831D103.WMF

[C]

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 the sort, stack and staple modes, the turn gate solenoid stays off to direct copies
to the sorter transport section. After the user presses the start key, the main motor
[C] turns counter-clockwise.

A831-11

Peripherals

BIN DRIVE MECHANISM 30 March, 1999

2.3 BIN DRIVE MECHANISM

[E]

[E]

[D]

15
30

[G]

[A]

45

[F]

40

40

A831D508.WMF

[B]

[C]

15
15

A831D509.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.

A831-12