Ricoh ps460 SPECIFICATIONS
PAPER TRAY UNIT
(Machine Code: B385)
20 February, 2001 MECHANICAL COMPONENT LAYOUT
1. OVERALL MACHINE INFORMATION
1.1 MECHANICAL COMPONENT LAYOUT
2
1. Paper Feed Roller
2. Tray
3
4
B385V101.WMF
1
3. Bottom Plate
4. Optional Tray Heater
B385-1
Peripherals
ELECTRICAL COMPONENT LAYOUT 20 February, 2001
1.2 ELECTRICAL COMPONENT LAYOUT
1
2
3
4
5
6
7
10
8
9
B385V102.WMF
1. Tray Main Board
2. Lift Sensor
3. Lift Motor
4. Paper Height 2 Sensor
5. Paper Height 1 Sensor
6. Paper Feed Motor
7. Tray Cover Switch
8. Paper End Sensor
9. Paper Size Switch
10. Optional Tray Heater
B385-2
20 February, 2001 DRIVE LAYOUT
1.3 DRIVE LAYOUT
1
2
B385V103.WMF
1. Paper Feed Motor 2. Paper Feed Roller
Peripherals
B385-3
PAPER FEED AND SEPARATION 20 February, 2001
2. DETAILED DESCRIPTIONS
2.1 PAPER FEED AND SEPARATION
[A]
[B]
[C]
B385D103.WMF
The paper tray holds 500 sheets. The paper feed roller [A] drives the top sheet of
paper from the paper tray to the copier/printer. The friction pad [B] allows only one
sheet to feed at a time. The friction pad applies pressure to the feed roller with a
spring [C].
B385-4
20 February, 2001 PAPER LIFT MECHANISM
2.2 PAPER LIFT MECHANISM
[B]
[A]
[D]
[C]
[H]
B385D106.WMF
[E]
[C]
[D]
[E]
The paper size switch detects when the tray is pushed in.
[K]
[J]
[G]
[F]
[A]
[B]
[I]
B385D107.WMF
When the paper tray is pushed into the machine, the pin [A] for the lift motor
pressure shaft engages the lift motor coupling [B] and the pin [C] for the bottom
plate lift shaft in the tray engages the bottom plate pressure lever coupling [D]. The
pin [E] on the rear of the tray pushes the lock lever so that the lift motor can lift the
bottom plate pressure lever.
The lift motor turns on, and turns clockwise as viewed on the lower diagram. The
main pressure spring [K] pulls the bottom plate pressure lever, and this lifts the tray
bottom plate.
When the top of the stack touches the feed roller, the motor cannot pull up the
plate any more, so it pulls the actuator [G] into the lift sensor [F].
The pressure of the feed roller on the paper is now too high, so the lift motor
reverses to reduce this pressure. It reverses for 300 ms or 600 ms, depending on
the paper size. For smaller paper, it reverses the larger amount (600 ms) to reduce
the pressure more.
B385-5
Peripherals
Loading...