CHAPTER 4 IMAGE FORMATION SYSTEM
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1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4-1
Item
Primary charging roller bias control
Transfer roller bias control
Developing/separation static elimi-
nator bias control
Density control
Pre-exposure control
Blank exposure control
Toner level detection
Waste toner case full detection
Primary charging roller cleaning
Description
DC constant voltage control: on/off
DC voltage level switching
DC voltage level auto correction
DC constant voltage control: on/off
DC constant current control (ATVC, cleaning bias)
Voltage level control
Polarity switching control
DC constant voltage control: on/off
AC constant voltage control: on/off
DC voltage level control
Developing DC bias control
Pre-exposure lamp
Side blanking exposure lamp
Level detection by a waste toner sensor
Detection by a waste toner sensor
Auto cleaning by the cleaning pad
I. IMAGE FORMATION SYSTEM
A. Outline
The major functions of the image formation system are as follows:
Table 4-101
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