Laser Exposure; Overview; Mechanism - Ricoh P C300W Field Service Manual

Laser Exposure

Overview

No.
1 LDB (C/M)
2 F
3 Polygon mirror motor
4 Synchronizing detector board
5 LDB (K/Y)

Mechanism

Composition
This machine uses two LDB units and one polygon mirror motor [A] to produce latent images on four
OPC drums [B] (one drum for each color toner).
There are two hexagonal mirrors. The polygon mirror motor rotates the mirrors clockwise and each
mirror reflects beams from LDB unit.
The laser beam from the LDB (C/M) is directed to the F
laser beam from the LDB (K/Y) is directed to the F
Laser exposure for magenta and cyan starts from the left side of the drum, but for yellow and black it
starts from the right side of the drum. This is because the units for magenta and cyan are on the other
side of the polygon mirror from the units for yellow and black.
Lens
Part name
lens at left side by the polygon mirrors. The
lens at right side by the polygon mirrors.
7.Detailed Descriptions
261