Laser Exposure
Overview
1. LD unit - C/M
2. F
θ
Lens
3. Polygon Mirror Motor
4. Synchronizing Detector Board
5. LD unit - K/Y
This machine uses two LDB units and one polygon mirror motor to produce latent images on four OPC
drums (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 LD unit.
The laser beam from the LD unit - C/M is directed to the F
θ
lens at rear side by the polygon mirrors. The
laser beam from the LD unit - K/Y is directed to the F
θ
lens at front side by the polygon mirrors.
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.
The machine has one laser synchronizing detector board (LSD) as shown above. The board detects four
colors. The LSD detects the start of the main scan.
Laser Exposure
173
6
Содержание PE-MF1
Страница 11: ...10...
Страница 15: ...1 Installation 14 1...
Страница 17: ...2 Preventive Maintenance 16 2...
Страница 24: ...6 Release the belt B 7 Front cover unit C x 4 Exterior Covers 23 3...
Страница 32: ...6 Drive unit E x 4 7 Drive unit guide F x 3 8 Black AIO gear G snap ring x 1 AIO Cartridge 31 3...
Страница 34: ...4 Color AIO motor C x 3 AIO Cartridge 33 3...
Страница 48: ...4 Registration clutch A x 1 Paper Transfer 47 3...
Страница 52: ...6 Transport Fusing motor assembly D x 3 x 3 ground plate x 1 7 Transport Fusing motor E x 3 Image Fusing 51 3...
Страница 56: ...4 Paper end sensor assembly A x 1 5 Paper end sensor B hooks Paper Feed 55 3...
Страница 59: ...4 Paper exit sensor B hooks x 1 3 Replacement and Adjustment 58 3...
Страница 88: ...3 ADF drive board A all s hooks ADF 87 3...
Страница 113: ...4 Troubleshooting 112 4...
Страница 161: ...Paper Path 6 Detailed Section Descriptions 160 6...
Страница 192: ...Transfer Roller Overview 1 Transfer Roller 2 Image Transfer Belt 3 Discharge Plate Image Transfer 191 6...
Страница 223: ...MEMO 222...
Страница 224: ...MEMO 223...
Страница 225: ...MEMO 224...