Outline; Pick-Up/Feeding System - Canon NP6251 Service Manual

I. PICK-UP/FEEDING SYSTEM
A. Outline
The machine uses a center reference method, in which paper is moved along the
center of the pick-up/feeding path with the aim of improving pick-up/feeding
performance.
The pick-up system consists of the front paper deck, cassettes, and multifeeder
assembly; in addition, the system includes the holding tray assembly and the holding
tray feeding assembly for making two-sided/overlay copies.
The feeding system has two feeding paths: for on-sided copies and for two-
sided/overlay copies (through the holding tray assembly and the holding tray feeding
assembly) The paths are separated by a delivery paper deflecting plate.
When making one-sided copies, the copy paper picked up from the cassette, front
paper deck, or multifeeder, is controlled by the registration roller so that its leading edge
matches the leading edge of the photosensitive drum; the paper is then moved through
the transfer, separation, feeding, fixing, and delivery assemblies and then ultimately to
the copy tray.
When making two-sided/overlay copies, on the other hand, copy paper is stacked on
the holding tray after fixing on its first side; it is then picked up from the holding tray for
fixing on its second side, and is sent through the holding tray feeding assembly and then
to the copy tray through the same path as a one-sided copy.
COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 PICK-UP/FEEDING SYSTEM
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