Canon PC300 Service Manual page 21

COPYING PROCESS
A. Outline
Copyboard glass
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ee
mmc
EE RI
>
ens arra'
: Scanning micas) weg ns array >
Primary charging roller on SS |] ee a |
less oa g blade
_
Fixing film Cleaning
oe rs
ee Static eliminator
Pressure roller
Figure 2-1
The copier is an indirect photorepro- The photosensitive drum has a layer
graphic system constructed as shown in construction: the photoconductive layer on
Figure 2-1. the outside and the conductive aluminum
The image formation process consists of base, inside.
seven steps as discussed below.
Step 1 : Primary charging (negative)
Step 2 : Image exposure
Step.3 : Development (AC and DC bias)
Step 4 : Transfer (negative)
Step 5: Separation
Step 6 : Fixing
Step 7 : Drum cleaning
Figure 2-3
Latent static Image Formation
Cais) + C Fang) 7 G
easexee > Flow of copy paper
«<«——_: Rotation of drum
Figure 2-2
COPYRIGHT © 1004 CANON INC. CANON PC300'320/925, FC210/290 REV.O JULY 1994 PRINTED IN JAPAN (MPRIME AU JAPON) 2-1