Contents
7.1 Construction ...................................................................................................................................................................7-1
7.1.1 Specifications, Control Mechanisms, and Functions ................................................................................................................... 7-1
7.1.2 Overview...................................................................................................................................................................................... 7-2
7.1.3 Printing Process ........................................................................................................................................................................... 7-2
7.1.4 Static Image Formation Block ..................................................................................................................................................... 7-3
7.1.5 Developing Block ........................................................................................................................................................................ 7-5
7.1.6 Transfer Block ............................................................................................................................................................................. 7-6
7.1.7 Fixing Block................................................................................................................................................................................. 7-7
7.1.8 ITB Cleaning Block ..................................................................................................................................................................... 7-8
7.2.1 Overview...................................................................................................................................................................................... 7-9
7.2.2 Generation of the Primary Charging Bias.................................................................................................................................. 7-10
7.2.3 Generation of the Developing Bias............................................................................................................................................ 7-10
7.2.4 Generation of the Primary Transfer Bias ................................................................................................................................... 7-11
7.2.5 Generation of the Secondary Transfer Bias ............................................................................................................................... 7-11
7.3 Image Stabilization Control .........................................................................................................................................7-11
7.3.1 Overview of Image Stabilization ............................................................................................................................................... 7-11
7.3.3 Drum Film Thickness Detection ................................................................................................................................................ 7-12
7.3.4 ATR Control .............................................................................................................................................................................. 7-13
7.3.5 D-max Control ........................................................................................................................................................................... 7-14
7.3.6 PASCAL Control ....................................................................................................................................................................... 7-17
7.3.7 D-half Control ............................................................................................................................................................................ 7-18
7.3.8 ARCDAT Control ...................................................................................................................................................................... 7-21
7.3.10 ATVC Control ......................................................................................................................................................................... 7-25
7.4 Special Control.............................................................................................................................................................7-26
7.4.1 Black band sequence.................................................................................................................................................................. 7-26
7.4.2 OHP black band sequence ......................................................................................................................................................... 7-26
7.4.3 Colour band sequence ................................................................................................................................................................ 7-26
7.5 Drum Unit ....................................................................................................................................................................7-28
7.5.1 Drum Unit .................................................................................................................................................................................. 7-28
7.5.1.1 Overview .......................................................................................................................................................................................................7-28
7.5.1.3 Identifying a New/Old Drum Unit ................................................................................................................................................................7-29
7.6 Toner Container ...........................................................................................................................................................7-32
7.6.1 Overview.................................................................................................................................................................................... 7-32
7.6.2 Supplying Toner......................................................................................................................................................................... 7-32
7.6.3 Detecting the Level of Toner ..................................................................................................................................................... 7-34
7.6.4 Toner Container Detection......................................................................................................................................................... 7-35
7.7 Transfer Unit ................................................................................................................................................................7-35
7.7.1 Outline of the Transfer Unit....................................................................................................................................................... 7-35
7.7.1.1 Overview .......................................................................................................................................................................................................7-35
7.7.1.2 Primary Transfer Block.................................................................................................................................................................................7-35
7.7.1.4 Secondary Transfer Block.............................................................................................................................................................................7-37
7.8.1 Collecting the Waste Toner ....................................................................................................................................................... 7-37
Contents