Stapling operation
The stapling operation staples the prescribed number of copies with the stapler unit. The staple
position depends on the staple mode and paper size. The stapler-shift home-position sensor (PI40)
detects whether the stapler unit is at the home position. The stapler unit is equipped with a stapler-
alignment interference sensor (PI46). The staple motor (M41) operation is prohibited when the
stapler-alignment interference sensor (PI46) is on. This prevents stapling at the stopper and
damaging the stopper when the stapler-shift motor (M105) is incorrectly adjusted. When the power is
turned on, the stacker controller PCA drives the stapler-shift motor (M105) to return the stapler unit to
home position. If the stapler unit is already at home position, it waits in that state.
Figure 1-170 Stapler unit
Stapler shift motor (M35)
Paper
Stapler
Stapler shift home position sensor (PI40)
Figure 1-171 Staple location
Front diagonal stapling
Rear diagonal stapling
2-point stapling
Paper width 1/2
Table 1-65 Sensors used in stapling
Sensor Symbol Connector Function Remarks
Stapler-shift home-
position sensor
PI40 J721B-6 Detects the home
position for the stapler
moving back and forth
Stapler-alignment
interference sensor
PI46 J717-3 Staple prohibited area
detection
196 Chapter 1 Theory of operation ENWW
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