Sharp AR-F15 Service Manual page 105

3. Stitching
When all sheets have been output, the two stitchers stitch the stack. The stitchers are positioned
so that they face the center of a stack.
The two stitchers are not operated simultaneously so as to prevent the paper from wrinkling
between two staples and to limit the load on the power supply.
If only one sheet of paper arrives from the host machine, stitching does not take place and the
sequence goes to the next operation (stack feeding).
CHAPTER 3 SADDLE STITCH UNIT BASIC OPERATION
Stitcher
Staple
Figure 3-204
3-11