Feed Unit Mechanism - Ricoh FT7770 Service Manual

30
April, '89

2. Feed Unit Mechanism

The paper feed unit is similar to that of the copier trays.
Feed roller drive is provided by the copier.
copier engages with an idle gear on the paper feed unit.
spring loaded against the copier's drive gear.
second idle gear, which is engaged with the pull-out roller gear and turns
whenever the main motor is on. To actuate the feed mechanism, the copier
CPU turns on the paper feed clutch. The pick-up rollers and feed roller then
start turning.
W h e n t h e l e a d e d g e o f t h e p a p e r a c t i v a t e s t h e p a p e r f e e d s e n s o r
(photoreflector type) the paper feed clutch is turned off. After that, the
clutch is turned on again momentarily to feed the paper to the vertical
transport section. The paper feed sensor also serves as a jam
The LCT uses the same FFR mechanism as the copier trays.
A gear on the left side of the
The first idle gear engages a
8-6
This idle gear is
detector.