Image Formation System; Overview/Configuration - Canon LBP3200 - LBP 3200 B/W Laser Printer Service Manual

2.2 IMAGE FORMATION SYSTEM

2.2.1 Overview/Configuration

2.2.1.1 Overview
[1]
[8]
[7]
[6]
F-2-2
[1] Laser/scanner assembly
[2] Laser beam
[3] Blade
[4] Developing cylinder
In response to a print command, the engine controller turns on the main motor to drive the photosensitive drum,
developing cylinder, primary charging roller, and transfer charging roller.
Thereafter, the machine uses the primary charging roller to charge the surface of the photosensitive drum to an even,
negative potential and, at the same time, directs the laser beam across the surface of the photosensitive drum. (The
laser beam is modulated to according to the incoming video signals.)
The image thus formed on the photosensitive drum is a static, latent image; it is turned into a visible image by means
of the toner from the developing cylinder. The resulting toner image is then transferred to paper by the work of the
transfer charging roller, and the paper is sent to the fixing assembly. The surface of the photosensitive drum is
cleaned by the cleaning blade so that it is free of residual toner; after cleaning, the primary charging roller once again
charges the surface to an even, negative potential to prepare for the formation of a new static, latent image.
[2]
[4]
[5]
[3]
T-2-2
[5] Photosensitive drum
[6] Transfer charging roller
[7] Primary charging roller
[8] Cleaning blade
Chapter 2
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