Mechanical Operation Description - OKIDATA OL400 Service Manual

Page: 27
Service Guide OL400
Chapter 2 Principles of Operation
2.4

MECHANICAL OPERATION DESCRIPTION

2.4.01 Basic Principles of Electrophotography
The printer turns on the LED head according to the data received from the controller. A charged
photoconductive material is exposed to light, forming a latent image on the material. This latent
image is developed by toner, with the resultant toner image being transferred to paper and fused
for printing.
The electrophotographic technology used in this printer is similar to that embodied in general
copying machines. The technology comprises the following processes:
Charging
The surface of the photoconductive material is uniformly charged.
Exposure
The charged photoconductive material is exposed to light, forming a latent image associated with
the print image on the photoconductive material.
Developing
Charged toner is attracted to the latent image by static electricity, making the image visible.
Transfer
The toner is attracted to the paper by a static charge.
Cleaning
Toner that remains on the photoconductive material is returned to the developer.
Fusing
The toner is fused to the paper using heat and pressure.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)