Contents
9.1 Construction ...................................................................................................................................................... 9-1
9.1.1 Specifications, Control Mechanisms, and Functions ................................................................................. 9-1
9.1.2 Major Components of the Image Formation System ................................................................................. 9-3
9.1.3 Charging Specifications ............................................................................................................................. 9-4
9.2 Image Formation Process .................................................................................................................................. 9-6
9.3 Basic Sequence .................................................................................................................................................. 9-8
9.3.1 At Power-On (1) ......................................................................................................................................... 9-8
9.3.2 At Power-On (2) ......................................................................................................................................... 9-8
9.4 Image Stabilization Control ............................................................................................................................. 9-13
9.4.3 ATR Control ............................................................................................................................................. 9-17
9.4.6 PASCAL Control (image gradation) ........................................................................................................ 9-18
9.4.9 Auto Gradation Control ............................................................................................................................ 9-22
9.5 Drum Unit ........................................................................................................................................................ 9-24
9.5.1 Outline of the Drum Unit ......................................................................................................................... 9-24
9.5.1.1 Outline of the Drum Unit .................................................................................................................. 9-24
9.5.2 Developing Assembly .............................................................................................................................. 9-26
9.5.2.2 Controlling the Developing Bias ....................................................................................................... 9-27
9.5.3 Auxiliary Brush ........................................................................................................................................ 9-29
9.5.3.2 Controlling the Auxiliary Bias .......................................................................................................... 9-30
9.5.4 Charging Mechanism ............................................................................................................................... 9-34
9.5.4.2 Controlling the Charging Bias ........................................................................................................... 9-35
9.6 Toner Container ............................................................................................................................................... 9-37
9.7 Transfer Unit ................................................................................................................................................... 9-40
9.7.1.1 Outline of the Transfer Unit .............................................................................................................. 9-40
Contents