Side Plate - Ricoh FT7770 Service Manual

30
April, '89

4. Side Plate

- Overview -
The side plate [A] is driven from side to side by the side plate drive motor
[B] (stepper motor).
driven by the jog motor (stepper motor).
- Side plate drive mechanism -
When the paper feed of the copier starts, the side plate drive motor turns
on. This motor moves the side plate via the side plate drive
shaft [C] and the upper and lower timing belts [D].
- Side plate HP sensor -
When the main switch is turned on the side plate HP sensor [E] checks whether
the plate is at the home position.
continues rotating until the side plate home position sensor is actuated.
- Side plate position sensor -
The side plate position sensor [F] is mounted on the side plate. When the
plate is moved, the sensor tracks the position actuator plate [G], and
generates an on off signal.
used to track the side plate position.
reaches the position corresponding to the paper size.
The side plate also jogs (pivots), and this movement is
If not, the side plate drive motor
This on/off signal is sent to the CPU and is
The CPU stops the side plate when it
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