Feed Unit Mechanism - Ricoh FT7770 Service Manual

30 April, '89

Feed Unit Mechanism

2.
Paper is fed from both trays by the paper feed unit shown above.
Feed roller drive is provided by a gear on the front end of the pull-out
This gear is engaged with the feed unit drive gear and turns
roller shaft.
whenever the main motor is on.
turns on the paper feed clutch.
start turning.
When the leading
(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.
To actuate the feed mechanism, the CPU
edge of the paper activates the paper feed sensor
The paper feed sensor also serves as a jam detector.
The pick-up rollers and feed roller then
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