Table of Contents
Advertisement
CHAPTER 2 OPERATION OVERVIEW
7 PUNCH UNIT
7.1.1 Overview
The punch unit is located in the paper feed path. Paper feed is momentarily stopped so
that the paper can be punched. The punch motor (M18) drives a slider and the punch opera-
tion is carried out in alignment with the slits in the slider. Punching stops when the slider
has travelled a certain distance. Lateral registration of the punch holes is adjusted every
time the size of the paper being fed changes.
Waste paper generated by the punch is fed into the waste container by the punch waste
feedscrew.
7.1.2 Punching Operation
The punch drive slider is powered by the punch motor (M18). Detection of the punch
slider position is carried out by the slider home position sensor (PI22).
The drive-timing of the punch motor is calculated using the inlet paper sensor (S1). Once
the inlet paper sensor (S1) detects the trailing edge of the paper, it stops the paper after it has
travelled a certain distance. Then, the puncher activates and punches the paper.
2-70
COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
Advertisement
Table of Contents
Troubleshooting
