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Konica Minolta Bizhub 20p Service Manual: Plate-up Function Of The Paper Tray

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3.2.1 Plate-up Function of the Paper Tray

The plate ASSY in the paper tray is pushed up with the motor drive and not with the spring in
order to maintain the constant pressure to the feed roller and to give the paper feeding
performance.
When the paper tray (Tray1 cassette) is installed to the machine, the plate is lowered.
If the main motor drives in this situation, the driving reaches the lift gear 46 through some gears.
This driving also reaches the plate up plate and it pushes up on the plate ASSY.
P/P clutch hook A2
P/P clutch hook A1
Plate ASSY
When the feed roller is pushed up, the hook is released by the lift arm, and the rotation of the
clutch gear is stopped. Then, the pressure plate is stopped to push up.
Stop
When the tray is pulled out from the printer, the pressure plate is returned to the original position.
When the tray is put into the printer, the above operation is performed from the start again.
P/P gear 29 clutch cam
Lift gear 46
Plate up plate
Fig. 2-5
Fig. 2-6
2-5
P/P clutch hook B
P/P differential
Gear 21-16
P/P gear 22/B23
tray drive
Gear 15
Confidential

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