Basic Operation; Single-Sided Original Feed - Ricoh FT7770 Service Manual

BASIC OPERATION

1. Single-Sided Original Feed

- Feed-in -
The feed-in motor turns in the reverse direction when the DF CPU receives
the feed-in signal. The pick-up rollers then start driving the bottom original
forward. The separation rollers and friction tabs allow only the bottom
sheet to pass.
After the one-turn sensor detects one revolution of the pick-up rollers, the
feed-in motor turns in the forward direction to drive the relay rollers only.
The belt motor and inverter motor turn on at the same time.
The feed-in motor turns off when the registration sensor turns off.
belt motor turns off 160 milliseconds after the registration sensor is deac-
tivated. It then rotates in the reverse direction for 33 milliseconds to align
the original with the right scale. The inverter motor turns off at the same
time as the belt motor.
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April, '89
The