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Contents
Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 Features .....................................................................................................................................................1- 1
1.1.1 Features ..................................................................................................................................................................1- 1
1.2 Product Specifications ................................................................................................................................1- 2
1.2.1 Machine Specifications............................................................................................................................................1- 2
1.3 Name of Parts.............................................................................................................................................1- 3
1.3.1 External View...........................................................................................................................................................1- 3
1.3.2 Cross Section View .................................................................................................................................................1- 3
1.4 Using the Machine......................................................................................................................................1- 5
1.4.1 Control Panel...........................................................................................................................................................1- 5
1.5 Safety .........................................................................................................................................................1- 6
1.5.1 Safety of Laser Light................................................................................................................................................1- 6
1.5.2 Regulations Under the Center for Devices and Radiological Health (CDRH) .........................................................1- 6
1.5.3 Safety of Toner........................................................................................................................................................1- 6
1.5.4 Handling the Laser Unit ...........................................................................................................................................1- 6
Chapter 2 TECHNICAL REFERENCE
2.1 Functional Configuration.............................................................................................................................2- 1
2.1.1 Outline .....................................................................................................................................................................2- 1
2.2 Basic Sequense..........................................................................................................................................2- 2
2.2.1 Basic Operation Sequence......................................................................................................................................2- 2
2.2.2 Power-on sequence.................................................................................................................................................2- 2
2.3 LASER EXPOSURE SYSTEM ...................................................................................................................2- 3
2.3.1 Overview/Configuration ...........................................................................................................................................2- 3
2.3.1.1 Overview .................................................................................................................................................................................. 2- 3
2.3.2 Controlling the Laser Activation Timing ...................................................................................................................2- 3
2.3.2.1 Turning On/Off the Laser ......................................................................................................................................................... 2- 3
2.3.2.2 Horizontal Synchronization Control.......................................................................................................................................... 2- 4
2.3.3 Laser Control ...........................................................................................................................................................2- 4
2.3.3.1 Auto Photo Current Control...................................................................................................................................................... 2- 4
2.3.4 Laser Scanner Motor Control ..................................................................................................................................2- 5
2.3.4.1 Outline...................................................................................................................................................................................... 2- 5
2.3.4.2 Scanner Motor Speed Control ................................................................................................................................................. 2- 5
2.3.4.3 Detection of a Fault in the Scanner Motor ............................................................................................................................... 2- 5
2.4 IMAGE FORMATION SYSTEM..................................................................................................................2- 6
2.4.1 Overview/Configuration ...........................................................................................................................................2- 6
2.4.1.1 Construction............................................................................................................................................................................. 2- 6
2.4.1.2 Printing Process....................................................................................................................................................................... 2- 6
2.4.1.3 Latent Image Formation Block ................................................................................................................................................. 2- 7
2.4.1.4 Development Block .................................................................................................................................................................. 2- 8
2.4.1.5 Transfer Block.......................................................................................................................................................................... 2- 9
2.4.1.6 Fixing Block............................................................................................................................................................................ 2- 10
2.4.1.7 Drum Cleaning Block ............................................................................................................................................................. 2- 11
2.4.2 High-Voltage Control .............................................................................................................................................2- 11
2.4.2.1 Outline.................................................................................................................................................................................... 2- 11
2.4.2.2 Generation of the Primary Charging Bias .............................................................................................................................. 2- 12
2.4.2.3 Generation of the Developing Bias ........................................................................................................................................ 2- 12
2.4.2.4 Generation of the Transfer Charging Bias ............................................................................................................................. 2- 12
2.4.3 Toner Cartridge .....................................................................................................................................................2- 13
2.4.3.1 Checking the Presence/Absence of a Toner Cartridge.......................................................................................................... 2- 13
2.4.3.2 Checking the Level of Toner .................................................................................................................................................. 2- 13
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