Canon imageRUNNER 2270 Service Manual page 9

7.3.4 Sequence of Operation (copying) ....................................................................... 7-8
7.3.5 Sequence of Operation (last rotation) ................................................................. 7-9
7.3.6 Sequence of Operation (last rotation) ................................................................. 7-9
7.4 Image Stabilization Control ..................................................................................... 7-10
7.4.1 Overview........................................................................................................... 7-10
7.4.2 APVC Control................................................................................................... 7-11
7.4.3 ATVC Control................................................................................................... 7-12
7.5 Drum Unit ................................................................................................................ 7-12
7.5.1 Charging Mechanism ........................................................................................ 7-12
7.6 Drum Cleaner Unit................................................................................................... 7-14
7.6.1 Photosensitive Drum Cleaning.......................................................................... 7-14
7.7 Developing Unit....................................................................................................... 7-15
7.7.1 Controlling the Developing Bias....................................................................... 7-15
7.8 Toner Container ....................................................................................................... 7-16
7.8.1 Overview........................................................................................................... 7-16
7.8.2 Route of Toner Supply...................................................................................... 7-18
7.8.3 Controlling the Drive of the Toner Cartridge ................................................... 7-19
7.8.4 Toner Supply Control........................................................................................ 7-20
7.8.5 Recovery Sequence ........................................................................................... 7-21
7.8.6 Toner Level Detection ...................................................................................... 7-22
7.9 Transfer Unit............................................................................................................ 7-23
7.9.1 Outline of the Transfer Unit .............................................................................. 7-23
7.9.2 Controlling the Transfer Bias ............................................................................ 7-24
7.9.3 Cleaning ............................................................................................................ 7-25
7.9.4 Separation Mechanism ...................................................................................... 7-25
7.10 Transfer Mechanism .............................................................................................. 7-26
7.10.1 Transfer Guide Bias ........................................................................................ 7-26
7.11 Photosensitive Drum Cleaning .............................................................................. 7-27
7.11.1 Outline............................................................................................................. 7-27
7.11.2 Collection of Waste Toner .............................................................................. 7-27
7.11.3 Checking the Waste Toner Box ...................................................................... 7-28
7.12 Parts Replacement Procedure ................................................................................ 7-30
7.12.1 Pre-Exposure Lamp ......................................................................................... 7-30
7.12.2 Drum Unit ....................................................................................................... 7-32
7.12.3 Hopper Assembly ............................................................................................ 7-34
7.12.4 Sub Hopper ..................................................................................................... 7-38
7.12.5 Developing Assembly ..................................................................................... 7-41
7.12.6 Developing Cylinder ....................................................................................... 7-43
7.12.7 Transfer Charging Roller ................................................................................ 7-46
7.12.8 Waste Toner Box ............................................................................................ 7-48
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