Sharp AR-F15 Service Manual page 121

CHAPTER 3 SADDLE STITCH UNIT BASIC OPERATION
Alignment plates
Sensor flag
Crescent roller
Figure 3-318
Figure 3-319
First sheet
Crescent roller phase
sensor (PI12S)
Alignment operation
Feed motor (M1S)
Figure 3-320
Crescent roller
phase sensor(PI12S)
If the crescent roller
was in contact with the
stack, alignment opera-
tion could be obstruct-
ed.
Alignment operation is
started when the flag has
covered the sensor and
the crescent roller is
away from the stack.
Second sheet
Feed motor
stops
3-27