
Contents
7.3.3
Controlling the Laser Scanner Motor....................................................................................................................... 7- 7
7.3.3.1
Outline...................................................................................................................................................................................... 7- 7
7.4
Parts Replacement Procedure ...................................................................................................................7- 9
7.4.1
Laser Scanner Unit.................................................................................................................................................. 7- 9
7.4.1.1
Removing the Laser Unit ......................................................................................................................................................... 7- 9
7.4.1.2
Removing the Laser Unit ......................................................................................................................................................... 7- 9
7.4.1.3
Removing the Laser Unit ......................................................................................................................................................... 7- 9
7.4.1.4
Removing the Laser Unit ....................................................................................................................................................... 7- 10
7.4.1.5
Points to Note When Replacing the Laser Unit...................................................................................................................... 7- 11
7.4.1.6
Points to Note When Replacing the Laser Unit...................................................................................................................... 7- 11
7.4.2
BD Unit .................................................................................................................................................................. 7- 11
7.4.2.1
Removing the BD Unit ........................................................................................................................................................... 7- 11
7.4.2.2
Removing the BD Unit ........................................................................................................................................................... 7- 11
Chapter 8
Image Formation
8.1
Construction ...............................................................................................................................................8- 1
8.1.1
Outline ..................................................................................................................................................................... 8- 1
8.1.2
Outline of the Image Formation System(iR105) ...................................................................................................... 8- 1
8.1.3
Major Components .................................................................................................................................................. 8- 3
8.1.4
Pre-Transfer Exposure LED .................................................................................................................................... 8- 4
8.1.5
Pre-Transfer Exposure LED .................................................................................................................................... 8- 4
8.1.6
Pre-Transfer Exposure LED .................................................................................................................................... 8- 4
8.1.7
Pre-Transfer Exposure LED .................................................................................................................................... 8- 5
8.1.8
Addition of the Developing Fan(iR105).................................................................................................................... 8- 5
8.2
Basic Sequence..........................................................................................................................................8- 6
8.2.1
Basic Sequence....................................................................................................................................................... 8- 6
8.2.2
Basic Sequence....................................................................................................................................................... 8- 6
8.3
Potential Control .........................................................................................................................................8- 7
8.3.1
Outline ..................................................................................................................................................................... 8- 7
8.3.2
Basic Sequence....................................................................................................................................................... 8- 7
8.3.3
Basic Sequence....................................................................................................................................................... 8- 8
8.3.4
Determining the Optimum Grid Bias........................................................................................................................ 8- 9
8.3.5
Grid Bias Corrective Control.................................................................................................................................... 8- 9
8.3.6
Determining the Optimum Laser Output................................................................................................................ 8- 10
8.3.7
Laser Output Corrective Control............................................................................................................................ 8- 10
8.3.8
Determining the Optimum Developing Bias........................................................................................................... 8- 11
8.3.9
Potential Control for Transparency Mode.............................................................................................................. 8- 11
8.3.10
Target Potential Correction in Each Mode........................................................................................................... 8- 12
8.3.11
Target Potential Correction in Each Mode........................................................................................................... 8- 14
8.4
Charging Mechanism................................................................................................................................8- 16
8.4.1
Primary Charging Mechanism ............................................................................................................................... 8- 16
8.4.1.1
Outline.................................................................................................................................................................................... 8- 16
8.4.1.2
Primary Charging Assembly Cleaning Mechanism................................................................................................................ 8- 16
8.4.1.3
Others .................................................................................................................................................................................... 8- 17
8.4.2
Dust-Collecting Roller Bias.................................................................................................................................... 8- 17
8.4.2.1
Outline.................................................................................................................................................................................... 8- 17
8.4.3
Pre-Transfer Charging Mechanism ....................................................................................................................... 8- 18
8.4.3.1
Outline.................................................................................................................................................................................... 8- 18
8.4.3.2
Controlling the Output to Suit the Environment (fuzzy control) .............................................................................................. 8- 19
8.4.3.3
Pre-Transfer Charging Assembly Cleaning Mechanism ........................................................................................................ 8- 20
8.4.3.4
Others .................................................................................................................................................................................... 8- 20
8.5
Drum Cleaner Unit....................................................................................................................................8- 22
8.5.1
Outline ................................................................................................................................................................... 8- 22
8.5.2
Outline ................................................................................................................................................................... 8- 22
8.5.3
Detecting the Waste Toner (case full condition).................................................................................................... 8- 23
8.6
Developing Assembly ...............................................................................................................................8- 25
Содержание ImageRunner iR8500 Series
Страница 1: ...Apr 5 2005 Service Manual iR8500 Series ...
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Страница 32: ...Contents ...
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Страница 99: ...Chapter 2 Installation ...
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