Figure 22. Staple Positions; Figure 23. Stapling Unit - HP Color LaserJet 9500 Service Manual

Stapling
The multifunction finisher staples the specified number of sheets of paper. The staple position
depends on the staple mode and paper size.
Landscape-image
stapling (front)
Portrait-image
stapling (back)
Figure 22. Staple positions
When the multifunction finisher is turned on, the finisher controller PCB drives the slide motor to
return the stapler to the home position. The stapler moves toward the front of the stapler frame,
and stops at the slide home-position sensor on the slide PCB. The slide motor is driven a
specified number of pulses, and the stapler moves to rear standby position and enters the
standby state when it reaches the back of the multifunction finisher.
Slide motor
(M8)
Figure 23. Stapling unit
ENWW
Paper
width
Side stitching—two staples 120
mm (4.72 inches) apart
Paper
width
Saddle-stitching
(two-staple booklet)
Stapler
Paper
Slide home-position
sensor (PI18)
Paper width X 1/2
Paper width X 1/2
Light-shielding
plate
Chapter 5 Theory of operation 59