Image Formation System - Canon FC220 Service Manual

IMAGE FORMATION SYSTEM

This chapter outlines the machine's image formation system in relation to
mechanisms and functions, relationship between electrical and mechanical systems,and
the timing of operation of respective parts.
I. PROCESS DESCRIPTION..........4-1
A. Outline ....................................4-1
B. Sequence of Image Formation
Operations (A4, 2 copies) .......4-2
C. Primary Charging Control Circuit
................................................4-3
D. Controlling Developing Bias....4-6
E. Transfer Charging Control Circuit
..............................................4-10
COPYRIGHT © 1998 CANON INC.
CHAPTER 4
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
F. Document Density Measurement
(AE; PC420/430/FC220).......4-14
II. CHARGING, DEVELOPING, AND
CLEANING SYSTEMS ..............4-17
A. Cartridge ...............................4-17
III. MECHANICAL SYSTEM............4-18
A. Photosensitive Drum.............4-19
B. Transfer Charging Roller.......4-20
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