Stapler - Canon SADDLE FINISHER K3 Service Manual

CHAPTER 2 OPERATION OVERVIEW

5.1.5 Stapler

Stapling is carried out by the staple motor (M11). Each time the motor rotates the cam,
the cam's home position is detected by the stapling home position sensor (inside the stapling
unit). The stapler motor rotates forward or in reverse, controlled by a microprocessor on the
finisher controller PCB.
When the stapling home position sensor goes OFF, the finisher controller PCB makes the
stapler motor rotate in reverse until the sensor comes ON again, and the staple cam returns
to the initial position.
The presence of the staple cartridge is detected by the staple cartridge switch (inside the
stapling unit). The presence of staples in the staple cartridge is detected by the staple car-
tridge switch (inside the stapling unit). The staple edging sensor (inside the stapling unit)
detects whether the staples inside the staple cartridge have been pushed to the tip of the sta-
pler.
The power supply line to the staple motor (M11) is connected and disconnected by the
microswitches listed in Table 2-503. This function is used to guard against injuries, for ex-
ample when an operator' fingers are inside the stapler.
2-60
COPYRIGHT© 2001 CANON INC.
M11
Finisher controller PCB
F02-501-07
2000 2000 2000 2000 CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001