Ricoh FT5540 Service Manual page 121

31 August 1989
Registration
The main motor [A] drives the registration rollers [B] via the main drive belt [C], gears, and the
registration clutch [D].
The CPU energizes the registration clutch when it receives a registration start signal from the
optics board. The timing of this signal depends on the reproduction ratio, editing functions,
and margin value. The paper is fed at the same speed as the drum (300 mm/s).
A paper dust cleaner is located at the center of the upper registration roller. This is in line with
the feed rollers where most paper dust is generated.
Image Shift
If the margin adjustment mode is selected, the CPU changes the on timing of the registration
clutch.
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