Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
CONTENTS
P1
Contents
CHAPTER 1 INTRODUCTION
CHAPTER 2 SEQUENCE OF OPERATIONS
1 Safety.............................................. 1-1P
1.1 Safety of Laser Light ...............1-1P
1.2 CDRH Ordinances ................... 1-1P
1.3 Handling the Laser System ......1-3P
1.4 Safety of Toner .........................1-4P
2 Image Formation System ...............1-5P
2.1 Outline ..................................... 1-5P
1 Basic Operations ............................2-1P
1.1 Functional Construction ..........2-1P
1.2 Outline for the Electrical
Circuitry ...................................2-2P
1.2.1 Outline ...............................2-2P
1.2.2 DC Controller PCB ............2-2P
1.3 Basic Sequence of
Operations ................................2-3P
1.3.1 Basic Sequence of
Operations at Power-On ...2-3P
1.4 Controlling the Main Motor
(M2) .........................................2-5P
1.4.1 Outline ...............................2-5P
1.5 Inputs to and Outputs from
the Major PCBs ........................2-6P
1.5.1 Wiring Diagram of the
Major PCBs .......................2-6P
CHAPTER 3 LASER EXPOSURE SYSTEM
1 Outline of Operations ..................... 3-1P
1.1 Outline ..................................... 3-1P
1.2 Sequence of Operations
(laser exposure system) ............ 3-3P
2 Generating Sync Signals ................. 3-3P
2.1 Outline ......................................3-3P
2.2 Flow of Sync signals ................3-4P
3 Laser Driver Circuit ........................ 3-5P
3.1 Controlling the Laser Unit ........3-5P
4 Controlling the Laser Scanner
Motor ..............................................3-7P
4.1 Outline ......................................3-7P
5 Disassembly and Assembly ............3-8P
5.1 Laser Scanner Assembly ..........3-9P
5.1.1 Removing the Laser Unit ..........3-9P
CHAPTER 4 IMAGE FORMATION SYSTEM
1 Outline of Processes .......................4-1P
1.1 Outline ..................................... 4-1P
1.2 Basic Sequence of Operations
(image formation system) ......... 4-3P
2 Controlling the Primary Charging
Roller Bias ......................................4-4P
2.1 Outline ......................................4-4P
2.2 Turning On/Off the Bias ........... 4-5P
2.2.1 DC Bias .............................4-5P