Controlling Charging; Controlling Pre-Exposure Led; Outline - Canon iR5000i Service Manual

Hide thumbs Also See for iR5000i:

Table of Contents

CHAPTER 4 IMAGE FORMATION SYSTEM

3. Controlling Charging

The machine is equipped with a pre-exposure LED array to prevent adhesion of excess

toner to the photosensitive drum because of residual charge, and its system of control serves

the following functions:

1. Turning On/Off the Pre-Exposure LED Array

The system uses the following signals:

[1] pre-exposure LED control signal: when '0', LED turns on.

Pre-exposure lamp

2000 2000 2000 2000

CANON iR5000i/iR6000i REV.0 JUNE 2001

Table of Contents

Ir6000i Image reader-a1