Sharp AR-FN8 Service Manual page 131

CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION
3) The paper folding rollers rotate in reverse, pushing back the stack for a length of about 20 mm
(reverse feeding).
4) The paper folding rollers rotate again, feeding out the stack. The paper pushing plate returns to
its home position.
3-38
M2S
Paper folding motor
Figure 3-509
M2S
Paper folding motor
Figure 3-510
M8S
Paper pushing plate motor