Canon NP6012F - Image Formation System; Outline

OPERATIONS AND TIMING-
III. IMAGE FORMATION SYSTEM
A. Outline
The copier’s image formation system performs the following functions:
l controls the pre-exposure lamp.
l controls the scanning lamp.
l controls the primary/transfer corona current.
l controls the developing bias.
l measures the density of the original.
l controls side blank exposure.
Copyboard glass
I
;P%
( “Scanning lamp
I
1, I\ I
, Light adjustment sensor
Developing
cylinder
3
Preexposure lamp *
Primary charging roller
Static
’ Transfer
eliminator
roller
Fluorescent
lamp driver
I
I Q501 I
High-voltage
circuit
DC controller PCB / ,
I
Microprocessor
Composite power supply PCB
Figure 3-301
COPYRIGHT 0 1995 CANON INC!
CANON NP9012lNP6012F/ NP6212 REV.1 SEPT. 1995 PAINTED IN JAPAN (IMPRIME AU JAPON) 3-17