# Part
1 Stack lever
2 Aligners
3 Aligner roller
4 Stack clamp
5 Lower exit roller
6 Upper exit roller
The front and rear tamper motors control their respective tampers. The long edges are aligned when the tampers move
and come into contact with the paper.
• For staple jobs, both tampers move to align the paper at the middle.
• For offset jobs, the paper is aligned to the rear or front of the compiler section.
After the paper is aligned, the stack lever solenoid lowers the stack lever. The lever presses the stack clamp, and the
clamp holds the edge of the paper in place.
The second sheet of paper is transported over the first sheet. The stack clamp moves up, and then the upper exit roller
feeds both sheets to the aligner roller. The upper exit roller returns to the home position to release the paper. The
alignment process for the short and long edges repeats.
Note: Subsequent sheets of paper are fed and aligned in the same manner.
# Part
1 Aligners
2 Front tamper
3 Sensor (staple finisher front tamper home)
4 Motor (staple finisher front tamper)
5 Motor (staple finisher rear tamper)
6 Sensor (staple finisher rear tamper home)
7 Rear tamper
4021, 7421
Appendix C: Theory of operation
639
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