Ricoh SP 8400DN Field Service Manual page 1946

2. Detailed Descriptions
Release mechanism
Paper exits to the shift tray by the feedout pawl and the paper exit roller after the stapling is done.
When the feedout pawl motor [A] turns ON, the release belt is driven and the paper is moved
upwards by the feedout pawl [D].
When the stapled stack touches the paper exit roller, the paper exit guide plate [B] closes and the
paper is released. To prevent the stack from moving up too much, the feedout pawl motor is
stopped temporarily.
The home position of the release belt is detected by the feedout pawl HP sensor [C].
Booklet stitching mechanism
Paper which has been stitched in the center is pressed in by the booklet stitch folding roller with the
folding blade.
The paper folded by the folding roller is released by the paper exit shutter, and is stacked in the booklet
tray one sheet at a time.
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