Ricoh ST29 SPECIFICATIONS

20-BIN SORTER STAPLER

(Machine Code: A658)

SPECIFICATIONS 31 March 1997

1. SPECIFICATIONS

Paper Size for Bins: Sort/Stack Modes:

Maximum: A3, 11 x 17"
Minimum: B5, 8

Paper Weight for Bins: Sorting: 52 ~ 157 g/m

Stacking: 52 ~ 157 g/m
Stapling: 52 ~ 157 g/m

Bin Capacity: Sorting: A4, 8

B4, 8

Stacking: A4, 8

B4, 8
Stapler Capacity: 2 ~ 20 copies
Proof Tray Capacity: 100 sheets (80g/m
Number of Bins: 20 bins + proof tray

1/2

x 11"

2

(14 ~ 42 lb)

2

(14 ~ 42 lb)

2

(14 ~ 42 lb)

1/2

x 11" or smaller: 30 copies

1/2

x 14" or larger: 25 copies

1/2

x 11" or smaller: 25 copies

1/2

x 14" or larger: 20 copies

2

, 20 lb)

Stapling Position:

a = 6 ± 3 mm
b = 6 ± 3 mm

A658V500.wmf

Staple Replenishment: Cartridge exchange (2,000 staples/cartridge)
Power Source: DC 24 V (from the copier)
Power Consumption: Average: less than 35 W

Average for Sorting: less than 30 W

Average for Stapling: less than 33 W
Weight: 20.5 kg (27.4 lb)
Dimensions (W x D x H): 430 x 570 x 680 mm (15.0" x 21.6" x 17.5")

•

Specifications are subject to change without notice.

A658-1

31 March 1997 COMPONENT LAYOUT

2. COMPONENT LAYOUT

2.1 MECHANICAL COMPONENT LAYOUT

1

2

7

3

Options

4

6

5

A658V501.wmf

1. Helical Wheels

2. Jogger Plate

3. Grip Assembly

4. Transport Rollers

5. Staple Unit

6. Bins

7. Proof Tray

A658-2

COMPONENT LAYOUT 31 March 1997

2.2 DRIVE LAYOUT

1

2

4

1. Jogger Drive Belt

2. Transport Roller

3. Wheel Drive Belts

4. Helical Wheels

3

A658V502.wmf

A658-3

31 March 1997 COMPONENT LAYOUT

2.3 ELECTRICAL COMPONENT DESCRIPTION

Refer to the electrical component layout on the reverse side of the Point to
Point Diagram (on waterproof paper).

Symbol Name Function Index No.

Motors

M1 Main Drive Drives the transport roller 16
M2 Jogger Drives the jogger plate to square the copies 9
M3 Bin Drive Drives the bins 14
M4 Stapler Drives the stapler hammer 7

Grip Drives the gri ppers forwards a nd back into

M5

Sensors

S1

S2

S3
S4 Sorter Entrance Detects paper jams 2
S5
S6 Wheel Detects the bin position. 12
S7

S8
S9 Staple End Detects when the staples run out 18

S10

Bin
(Phototransistor)

Grip Home Position Detects when the grip assembly cam gear

Bin Home Positi on Detects w het her the bins are at home

Jogger Home Posi t i on Detects whether the jogger plat e i s in its

Bin
(LED)

Stapler Paper Detects whether any copies are under the

Staple Hammer
Home Position

the bin to grip the copies and br ing them to
the stap l ing posit i on

Detects whether there is any pap er in the
bins (light re cei ving element)

has rotated on ce

position

home posit ion

Detects whether there is paper i n th e bi ns
(light emitt i ng el ement)

hammer.

Detects whether the stapler hammer is at
home posit ion

3

1

6

11

13

10

4

17

Options

Switches

SW1
SW2 Stapler Cuts t he signals t o t he staple r. 8

Circuit Board

PCB1 Main Controls all sor t er /s ta pl er fu nct i ons 15

Door Safety Cuts the dc +24 V supply when either the

unit or the stap l er co ver is opened.

A658-4

5

BASIC OPERATION 31 March 1997

3. BASIC OPERATION

3.1 NORMAL MODE AND SORT/STACK MODE

[F]

[E]

[A]

[C]

[B]

[D]

A658D500.wmf

Copies exiting the copier pass through the entrance guide plate [A]. The
transport roller will send copies either to the proof tray or to each bin,
depending on the selected mode.

During copying, all rollers in the sorter stapler transport the paper at a speed
which depends on the copier. When the trailing edge of the copy passes the
fusing exit sensor, the speed of the rollers changes to 600 mm/s. This makes
enough time for the jogger plate to square the stack of paper and to stack the
paper smoothly into the bins.

– Normal (proof) mode –

When the

!

key is pressed, the transport motor [B] energizes to rotate the
transport rollers [C]. The transport rollers send copies to the proof tray
directly.

– Sort mode –

When sort mode is selected, the bin drive motor [D] energizes to rotate the
helical wheels. The helical wheels [E] rotate twice to move the top bin to the
transport roller position, then the first copy is delivered to the top bin.

After the first copy of the first original has been fed to the top bin, the bin
drive motor moves the bins up one step (the helical wheels rotate once) so
that the second copy of the first original will be delivered to the next bin.

The jogger plate [F] squares the copies after each copy has been fed to a
bin. After the copies of the first original have been delivered to each bin, the
sorter stapler maintains its status (the bin drive motor does not rotate).

A658-5

31 March 1997 BASIC OPERATION

The first copy of the second original is delivered to the final bin that was used
for the first original, then the final bin descends one step. The bins descend
each time a copy of the second original is delivered.

The direction of motion of the bins alternates for each page of the original
until the copy run is finished.

– Stack mode –

[A]

Options

A658D501.wmf

When stack mode is selected, the top bin advances to the transport roller
position in the same way as in sort mode.

After the first copy is delivered to the top bin, the jogger plate [A] moves
across to square the copy. The jogger plate squares the copies after each
copy has been fed to a bin.

After one set of copies for the first original has been delivered to the top bin,
the bin drive motor moves the bins up one step. Then, one set of copies of
the second original will be delivered to the next bin.

A658-6

BASIC OPERATION 31 March 1997

3.2 STA PLE MODE

[B]

[C]

[A]

A658D502.wmf

[D]

A658D503.wmf

The stapler is only available in sort mode.
When the jogger plate has squared the final set of copies, the grip arms [A]

move inside the front side frame and catch the paper. The grip assembly
brings the copies into the stapler [B], and the stapler staples the copies.

After stapling, the grip assembly [C] brings the stapled copies back to the bin
and releases the copies. Then the grip assembly goes back to the normal
position. The bin either advances or descends one step [D] (depending on
whether the page is an odd or even numbered page of the original).

When the final set of copies has been stapled, the bins go back to the
standby position.

There are two staple modes.

– Automatic Stapling –

In ADF mode, when staple mode is selected before pressing the

!

key,

copies will be delivered to each bin and stapled automatically.

– Manual Stapling –

In platen cover mode, after the copies have been sorted into the bins, the
staple mode LED starts to blink. If the sort key is pressed while this LED is
blinking, the copies will be stapled.

A658-7

31 March 1997 BASIC OPERATION

3.3 BIN DRIVE MECHANISM

[C]

[A]

Options

[E]

[D]

[B]

A658D504.wmf

The bin drive mechanism moves the bins up and down to receive copies.
There are four pins on each bin. Two pins fit into the slots [A] in both the front

and rear side frames; the pins slide up and down in these slots. The other
two pins fit into the slot in the helical wheels; as the helical wheels turn, these
pins move up and down, and the other pins move up and down in the slots at
the other end of the bin.

The bin drive motor [B] drives the helical wheels [C] through timing belts as
shown. When the motor rotates clockwise, the bins lift; when it rotates
counterclockwise, the bins lower. There is a wheel sensor [D] located under
the actuator [E] on the rear helical wheel; the actuator has a slot which
detects when the helical wheel has rotated once.

When the bins are advanced, the helical wheels rotate once for each step. As
the pitch of the spiral on the helical wheel is greater when the bins are at the
stapling and paper exit area than when the bins are elsewhere, the amount of
bin shift is greater when the bins are at the stapling and paper exit area. This
leaves enough space to staple and stack the copies. Also, this reduces the
total machine height.

A658-8