Identifying The Size Of Paper In The Multifeeder - Canon NP6251 Service Manual

B. Identifying the Size of Paper in the Multifeeder
When the user adjusts the slide guide of the multifeeder, the output of the variable
resistor operating in conjunction with the slide guide is sent to the DC controller PCB,
enabling the detection of the width of the copy paper.
The data on the width of the copy paper is used to determine how to control the lens
and the blanking exposure mechanisms. The length of paper when the multifeeder is
selected is identified in reference to the time during which the pre-registration paper
sensor (PS23) remains on.
You must enter the paper with basic value whenever you have replaced the variable
resistor. (See Chapter 11 "Registering the Paper Width Basic Value.")
Slide guide
(rear)
Variable resistor
DC controller PCB
COPYRIGHT © 1997 CANON INC.
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Figure 5-402
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 PICK-UP/FEEDING SYSTEM
Multifeeder tray
Slide guide (front)
5-21