Ricoh FT4227-S Service Manual ST24
SORTER STAPLER
(Machine Code: A374)
10 July 1992 SPECIFICATIONS
1. SPECIFICATIONS
Paper Size for Bins: Sort or stack mode:
Maximum: A3, 11" x 17"
Minimum: A5, 51/2" x 81/2" lengthwise
Staple mode:
Maximum: A3, 11" x 17"
Minimum: B5, 81/2" x 11"
Paper Weight for Bins: Sort or stack mode:
52 - 93 g/m2, 14 - 25 lb
Staple mode:
52 - 80 g/m2, 14 - 21 lb
Number of Bins: 20 bins + proof tray
Bin Capacity: Sort mode: 30 sheets (A4, 81/2" x 11")
15 sheets (A3, 11" x 17")
Stack mode: 15 sheets
Proof tray - 100 sheets
(52 – 81 g/m2, 14 – 22 lb)
- 50 sheets
(82 – 128 g/m2, 23 – 34 lb)
- 30 sheets
(129 – 157 g/m2, 35 – 42 lb)
Stapler Capacity: From 2 to 20 sheets (80 g/m2, 20 lb) (2 to 10
sheets when using A3 /11"x17" or B4/81/2"x14")
Stapling Position:
(Horizontal)
a
b
(Diagonal)
a
b
a = b
= 6 ± 2 mm
= 0.24" ± 0.08"
1
a = 10 ± 2 mm
= 0.39" ± 0.08"
b = 16 ± 2 mm
= 0.63" ± 0.08"
SPECIFICATIONS 10 July 1992
Staple Replenishment: Cartridge exchange
(3,000 pieces/cartridge)
Power Source: DC 24V, 5V (form the copier)
Power Consumption: 50 W
Dimensions:
(W x D x H)
412 x 600 x 690 mm
(16.2" x 23.6" x 27.1")
Weight: About 25 kg, 55.1 lb
(Main Frame :22 kg, 48.5 lb
Mounting Frame: 3 kg, 6.6)
2
10 July 1992 COMPONENT LAYOUT
2. COMPONENT LAYOUT
2.1 MECHANICAL COMPONENT LAYOUT
1
11
12
10
13
2
3
4
5
6
7
8
1. Proof Tray
2. Proof Tray Exit Rollers
3. Vertical Transport Rollers
4. Turn Gate
5. Bin Transport Belt
6. Bin Transport roller
7. Bin Exit Roller
9
8. Stapler
9. Grip Assembly
10. Bin Support Block
11. Bins
12. Suppor t Bin
13. Jogger Bar
3
10
COMPONENT LAYOUT 10 July 1992
2.2 DRIVE LAY OUT
21
20
19
18
17
16
15
14
4. Roller Drive Motor Pulley
23
22
1
13
12
11. Bin Lift Motor Pulley
2
3
4
5
6
7
8
9
11
3. Rear Roller Drive Belt
2. Proof Tray Exit Roller
Pulley (Rear)
(Proof Tray Exit Roller)
19. Proof Tray Exit Roller
Pulley (Front)
18. Front Roller Drive Belt
17. Vertical Transport
Drive Pulley
15. Bin Transport Drive Gear
14. Bin Transport Belt s
8. Bin Lift Drive Belt
7. Bin Lift Gears
6. Bin Lift Gear/Pulley
12. Rear Bin Lift Wire
13. Rear Bin Support
Block
10. Jogger Motor Pulley
13. Lower Jogger Drive Belt
21. Bin Drive Shaft
20. Front Bin Lift
Pully
16. Front Bin Lift
Wire
22. Front Bin
Support Block
5. Jogger Drive Shaft
1. Upper Jogger
Drive Belt
23. Jogger Bar
4
10 July 1992 COMPONENT LAYOUT
2.3 ELECTRICAL COMPONENT DESCRI P TI ON
Refer to the electrical compone nt layou t on the reverse side of the Poin t to
Point (Water proof paper) for symbols and ind ex numbe rs.
Symbol Name Function
Motors
M1 Bin Lift
M2 Jogger
M3 Grip
M4 Stapler Feeds the staples and drives the stapler hammer. 12
M5 Roller Drive
Circuit Board
PCB1 Main Control Controls all sorter stapler functions. 18
Solenoid
SOL 1 Turn Gate
Sensors
S1 Bin Lift Timing -1
S2 Bin Lift Timing -2
S3 Jogger H.P. Detects if the jogger bar is in the home position. 19
S4 Paper Detects if copies are under the hammer. 8
S5 Bin (LED)
Bin (Photo
S6
transistor)
S7 Grip H.P.
S8 Bin H.P.
S9 Bin Exit Detects paper jams at the bin exit area. 5
S10 Proof Tray Exit Detects paper jams at the proof tray exit area. 4
S11 Roller Drive Timing
Switches
SW1 Upper Lift Limit
SW2 Wire Tension
Lifts and lowers the bins via a belt, gears, and
wires.
Drives the jogger bar to jog the copies against
the front side plate.
Drives the grip assembly forward and backward
into the bin to grip the copies and bring them to
the stapling position.
Drives the proof tray exit and vertical transport
rollers, and bin transport belts.
Opens and closes the turn gate to direct the
copies into either the proof tray or the bins.
Monitors the rotation of the bin lift motor by
detecting the timing disk.
Controls the stop timing of the bin lift motor so
that the bin lift timing sensor -1 can detect the
timing disk properly.
Detects if there is paper in the bins (light emitting
element).
Detects if there is paper in the bins (light
receiving element).
Detects if the grip assembly is in the home
position.
Detects if all the bins are in the down (home)
position.
Monitors the roller drive motor speed by
detecting the timing disk.
Stops the bin lift motor when this switch detects
the upper limit position of the bins.
Stops the bin lift motor when this switch detects
the lower limit position of the bins through the bin
lift wire tension.
24 or 25
24 or 25
Index
No.
23
20
13
1
6
3
17
16
15
2
22
21
5
COMPONENT LAYOUT 10 July 1992
Symbol Name Function
SW3 Front Door Cuts the dc 24 V line when the front door is open. 14
SW4 Sorter Stapler Set
SW5 Staple End Detects the staple end condition. 10
SW6 Staple Guide Detects if the staple guide plate is closed. 9
SW7 Staple H.P.
Cuts the dc 24 V line when the sorter stapler unit
is open.
Detects if the staple hammer is in the home
position.
Index
No.
7
11
6
10 July 1992 BASIC OPERATION
3. BASIC OPERATION
3.1 NORMAL MODE AND SORT/STACK MODE
[E]
[C]
[G]
[F]
[B]
[A]
[D]
Copies [A] exiting the copier pass t hro ug h the entra nce guide plates to the
turn gate section. The turn gate [B] will send copies eith er to the proof tray or
to the bins, depending on the mod e.
- Normal mode - (from the turn gate section to the proof tray)
When the S/S CPU receives the motor ON signal from the copier, the roller
drive motor [C] rotates all the rollers in the S/S paper path. At the same time,
the turn gate solenoid [D] is energ ized and the turn gat e turns clockwise. The
turn gate directs copies to the proo f tray [E] through the vert ical transport and
proof tray exit rollers [F,G].
7
BASIC OPERATION 10 July 1992
- Sort/Stack mode - (from the turn gate sectio n to the bins)
[C]
[G]
[H]
[A]
[I]
[B]
[D]
[E]
[F]
The turn gate solen oid [A] stays off and th e turn gate [B] stays up when t he
S/S roller drive motor [C] starts rot at ing . The turn gate directs copies
downward and the bin transport belt [D] exits copies t o th e bin through the bin
transport and bin exit rollers [E, F].
The jogger bar [G] th en moves th e copy towards the front and jogs it ag ainst
the front side plate to sq uare the copies.
The bin lift motor [H] turn s on when this jogging operation is almost fin ished
and advances the bin one ste p up along the bin cam track [I]. The bin lif t
motor stops at the proper timing to position the next bin at the bin exit
section. This bin movement is done for each copy in the sort mode and for
the final copy of each original in th e stack mo de.
The up and down movement of th e bins in both the sort and stack modes is
the same as that for othe r mo ving bin type sorters.
8
10 July 1992 BASIC OPERATION
3.2 STAPLE MODE
[A]
(Fig. 1)
[B]
(Fig. 2)
(Fig. 3)
(Fig. 4)
When the final set of copies is jogged in the sort mode, th e staple unit staples
the stacked copies as follows:
(Figure 1)
If the final copy is exited to a bin other than the first one, all the bins lower to
the home position (the first bin is positioned at the bin exit sectio n). The
jogger bar [A] moves towards the front to jog the copies stacked in the first
bin. Then it stops 15mm away from the paper side edge.
(Figure 2)
The bins move one step up to place the first bin at the stap ling section.
(Figure 3)
The grippers [B] move forward, an d grip the copies.
(Figure 4)
The grippers bring the copies up unde rne at h the sta pler. At the same time,
the jogger bar jogs the cop ies stacked in the second bin as a prep aration for
the next stapling. Then the jog ge r bar ret urns to the position 15mm away
from the paper side edge.
9
BASIC OPERATION 10 July 1992
(Fig. 5)
(Fig. 6)
(Figure 5)
The stapler staples th e cop ies.
(Figure 6)
The copies are pushed back int o the bin. Then the grippe rs ope n an d ret urn
to the home position.
The bins move one step up for the next stapling.
When the final set of copies is stapled, the bins lower and stop when the final
bin used just before the stapling operation is positioned at the bin exit section.
There are two staple modes.
1) Automatic stapling:
In ADF/ARDF mode, when the staple mode is selected before pressing
the start key, copies will be delivered to each bin an d sta ple d
automatically.
2) Manual stapling:
In sort mode, after copies are sort ed in the bins, the copie s will be stap led
when the staple key is pressed. In sta ck mode, manual stapling is
impossible.
10
10 July 1992 TURN GATE SECTION
4. TURN GATE SECTION
[B]
[B]
[A]
[C]
[A]
[D]
The turn gate directs copies to the pro of tray or to the bins depe nding on the
mode.
In the normal mode, the turn gate solenoid [A] turns on tog et he r wit h th e
roller drive motor when the S/S CPU receives the motor ON signal from the
copier. The turn gate [B] rotates clockwise to direct copies upward [C]
through the vertical transport section to the proo f tray. The turn gate solenoid
stays on during the copy cycle s, and turns off when the proof tray exit sensor
detects the trailing ed ge of th e last copy an d the S/S CPU receives the motor
OFF signal from the copier.
In the sort, stack, or staple mode, the turn gate solenoid stays off to keep the
turn gate up so that copies are direct ed down ward [D] to the bin transport
section.
However, a certain number of pulse s (d epen din g on the pap er size) af te r t he
bin exit sensor detects the leading edge of the copy, the turn gate solenoid
turns on. When the trailin g ed ge of th e copy passes the turn gate (50 mse c.
after the S/S CPU rece ives th e pa pe r exit signal from the copier), th e tu rn
gate solenoid turns of f to direct the next copy downward. This turn gat e
movement is to correct the facecurl of the trailing part of the copy. This will
flatten the cop y, or give it a slight backcurl, and will help stack and jog copie s
in the bins smoothly.
11
[F]
ROLLER DRIVE AND CONTROL 10 July 1992
5. ROLLER DRIVE AND CONTROL
[G]
[E]
[I]
[C]
[J]
[B]
[D]
[K]
[A]
[H]
[L]
The roller drive motor (stepper motor) [A ] drive s the proo f tra y exit rolle rs [B] ,
vertical transport rolle rs [C], bin tra nsport belts [D], bin transport rollers [E],
and bin exit rollers [F] via the front and rear roller drive belt s [G, H], pulle ys,
and gears, as shown above.
The roller drive motor turns on when the S/S CPU receives the motor ON
signal from the copier. When the proo f tray exit sensor [I] (in the normal
mode) or the bin exit sensor [J] (in th e sort /stack/staple mode) detects the
trailing edge of the final copy, the S/ S CPU inf orms th e cop ier th rou gh the
fiber cable and the interfa ce PCB . Then the copier sends the motor OFF
signal to the S/S to stop the roller drive moto r.
The S/S CPU monitors the roller drive motor speed by counting pulses of the
timing disc [K] through the roller drive timing sensor [L ].
12
10 July 1992 ROLLER DRIVE AND CONTROL
The S/S CPU controls the moto r rota tio n at 2 speeds (no rmal an d hig h
speeds) to exit copies as fast as possible .
The normal speed depends on the copier’s p ape r tra nsp ort speed. The S/S’s
paper transport speed is almost the same but is slightly fast er th an the
copier’s.
In the normal mode, the roller drive motor changes the paper tra nsp ort speed
from normal to high (500 mm/sec., fixed) when the S/S CPU receives th e
paper exit signal from the copier. The roller drive mot or cha ng es the paper
transport speed from hig h to norma l 100 millisecon ds af te r t he proo f tra y exit
sensor detects the trailin g edge of the cop y.
In the sort/stack/sta ple mo de, the roller drive motor also changes the pap er
transport speed from normal to high and then fro m h igh to normal. The timin g
is the same as in the normal mode, bu t the bin exit sensor is used to dete ct
the trailing edge instead of the pro of tray exit sensor. The high speed is
almost double the normal speed, and it changes depending on the paper size
(900, 960 , or 1,000 mm/second).
13
[L]
BIN DRIVE AND CONTROL 10 July 1992
6. BIN DRIVE AND CONTROL
[G]
[J]
[F]
[I]
[H]
[M]
[E]
[K]
[B]
[A]
[C]
[D]
[C]
[E]
All the 20 bins [A] and the support bin [B] are piled up on the bin support
blocks [C]. The front and rea r bin sup po rt blocks are connected by the bin lif t
shafts [D] the ends of which are fixed on the bin lift wires [E] as shown . The
bin lift motor [F] (dc motor) drives the bin lift wires through the bin lift drive
belt [G], bin lift gears [H], an d th e bin lift gear/pulley [I]. Then the bins are
driven up and down along the front an d rea r bin cam tra cks [ J].
The S/S CPU controls the amount of bin lift motor rotation by monitorin g the
pulses of the timing disc [K] th rou gh the bin lift timing senso rs 1 and 2 [L,M].
The bin lift timing sensor 1 is used for cou nting the timing pulses. The bin lift
timing sensor 2 is used to determine the mot or stop timing so that the edge of
the timing disc slots is not positioned at the timing sensor 1.
[C]
14
10 July 1992 BIN DRIVE AND CONTROL
[A]
[G]
[D]
[E]
[F]
[B]
[C]
If the bin lift motor [A] fails t o sto p the bin s at the hig he st po sitio n, the re ar
end of the left bin lift shaft [B] activate s the upper lift limit switch [C] (Normal
Closed type) to open the dc 24V line of the bin lift motor.
The front right bin suppo rt blo ck [D] ha s an act uator on its underside. When
all the bins are lowered and th e first bin is positioned at the bin exit sect ion,
the actuator activates the bin home position sensor [E] and the bin lift motor
turns off.
If the bin lift motor fails to stop lowering the bins at the bin home positio n, the
rear bin lift wire [F] loosens its te nsio n. Then the wire tension switch [G]
(Normal Open type) is deactivated to open the dc 24V line of the bin lift motor.
15
BIN DRIVE AND CONTROL 10 July 1992
[A]
[B]
[E]
[C]
[D]
(Fig. 1) (Fig. 2)
[F]
(Fig. 3) (Fig. 4)
An end fence mylar [A] is stuck on each bin ent ran ce an d an end fence block
[B] is stuck on the mylar. These are stuck with two -side d ta pe, as shown in
figure 1. There is a twisted spring at the rea r end of the bin ent ran ce to raise
the end fence block and mylar. When the bin s are po sitio ne d at the bin home
position, the support bin [C] and th e first bin [D] are positio ne d at the bend of
the bin cam track [E] as shown. The supp ort and first bins have a space
between them so that the end fence mylar can fully rise until the end fence
block stops it.
The space between the support and first bin s is at the bin entra nce section
as shown in figure 2. Since the end fence mylar is t hin , a copy exits to the
first bin over the mylar. The steep angle of the bin helps th e exit ed copy slide
by its own weight under the mylar against th e bin ent ran ce.
While the bins move up alon g th e be nd of th e bin ca m track, the end fence
mylar and block of the first bin are lowered by the support bin. Those of the
second bin [F] rise as shown in figure 3.
When the bin lift motor stops, the first and second bins are positioned as
shown in figure 4. The copy in the first bin is prevented by the lowered end
fence mylar from moving out of th e jogged position. The end fe nce mylar and
block of the second bin are rea dy to receive the next copy.
16
10 July 1992 JOGGER SECTION
7. JOGGER SECTION
[D]
[F]
[A]
[C]
[B]
When the start key is pressed in the sort, stack, or staple mode, the copier
sends the paper size informatio n to the sorte r stap ler. Wh en a copy en ters t o
the sorter stapler entrance , th e jog ge r bar [A ] stays at the home position
which is detected by the jogger home position sensor [B].
At the appropriate timing for the selected pape r size, after the trailing edge of
the copy is detected by the bin exit senso r, the jogger motor [C] (stepper
motor) rotates and reverses to move the jogger bar via the upper and lower
jogger drive belts [D,E]. As the copy is exited into th e bin at th e center, the
jogger bar moves the copy all t he way to th e front, and pushes the pape r side
edge by 5 mm (0.2") an against the fron t side plate [F]. Then the jogger bar
moves back to the position which matches the paper width. Short ly aft er, the
jogger bar returns to its home posit ion . This jogger bar movement is
performed for each copy to square the copy stack in the exited bin.
In the automatic or manu al sta ple modes, the jogger bar also moves to
ensure squaring th e sta cked copies before stapling . How the jogger moves is
described in the Staple Mode sectio n of the Basic Operation instruct ions.
[E]
17
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