In this step, the laser light from the laser/scanner unit is directed to the surface of the photosensitive drum to free the surface from residual charges in preparation

for the next print job, thus preventing uneven density.

This mechanism is executed for every post rotation at the end of a job.

Photosensitive drum

Primary charging roller

Laser beam

F-7-14

7.2 Driving and Controlling the High-Voltage System

7.2.1 Overview

0013-8474

Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR

C2550

This circuit works for applying bias to the primary charging roller, the developing cylinder, the primary transfer roller and the secondary transfer outer roller. These

biases are generated by the control of the DC controller to HVT1 and HVT2.

See the following table for the main circuit

7-10

Table of Contents