Ii. Developing Assembly Cleaning Assembly; Outline; Developing Assembly/Cleaning Assembly - Canon NP6512 Service Manual

II. DEVELOPING ASSEMBLY/CLEANING ASSEMBLY
A.

Outline

The machine's developing assembly may be locked into or out of position by means of a lock-
ing lever.
The developing cylinder inside the developing assembly and the waste toner feeding blade of
the drum unit are rotated by the drive of the main motor (M1).
The level of toner inside the developing assembly is monitored by the toner level antenna;
when the level drops below a specific value, the Replace Toner Cartridge message will start to flash
on the control panel.
The waste toner collected by the cleaning blade is held inside the drum unit, and is sent to the
rear of the drum unit by the toner feed blade.
The primary charging roller is cleaned by the cleaning pad operated by the cleaning solenoid (SL6).
COPYRIGHT © 1999 CANON INC.
DC controller PCB
Coupling
PS5
gear
Waste toner
sensor
Drum unit
Cleaning blade
Waste toner feeding blade
Figure 4-201
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
Composite power supply PCB
Toner level
detection PCB
M1
Cleaning
SL solenoid
6
Cleaning
pad
Toner antenna
Developing
assembly
4-27