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OPERATIONS AND TIMING
COPYRIGHT
©
1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Identifying the Size of Paper on the
Multifeeder Tray
The size of paper on the tray is identified by the
variable resistor (VR1) that operates in association
with the slide guide moving in relation to the slide
guide moved by the user to suit the width of the
paper.
The identified width of the copy paper is used to
control the lens and blank exposure.
The length of paper placed on the multifeeder
tray is identified in relation to how long the registration
sensor (PS6) remains ON.
All this is used to control how long blank expo-
sure should take, how long the registration roller
should remain ON, and how long high voltage
should remain ON.
Reference:
The maximum length of paper is Ledger (432
mm). Pages longer than this will be likely to jam.
Figure 3-439
Slide guide (Front)
Multifeeder tray
Slide guide (rear)
DC controller PCB
Variable resistor (VR1)
Multifeeder paper
width detection
(MFPWD)