Ricoh ST23 Service Manual page 14

SECTIONAL DESCRIPTION 6 March 1992
2.5 STAPLING
[C]
[A]
[E]
[D]
[B]
2.5.1 Gripper
The grip unit [A] grips and moves the jogged paper to the staple position and
returns the stapled paper to the bin.
The grip solenoid [B] and grip motor [C] are built into the grip unit. The motor
moves the grippers [D] back and forth, and the solenoid [B] controls paper
clamping.
When the grippers reach the paper in the bin, the grip solenoid turns on and
the grippers grasp the paper.
The lower gripper arm has a shorter stroke to prevent it from disturbing the
jogged paper in the bin.
Paper gripped by the grippers is moved by the grip motor into stapling
position.
Resetting the main PCB DIP SW101-1 to 101-4 adjusts the stapling position
(0.5 mm increments).
The stapled paper (held by the gripper arms throughout stapling) is returned
to its original position. The grip solenoid turns off to release the stapled
paper, and the gripper arms return to their original position.
The grip H.P. sensor [E] confirms that the grip unit has returned to its home
position.
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