Konica Minolta bizhub c650 Service Manual page 32

Theory of Operation Ver. 8.0 Jun. 2008
14.2.1 1st Image Transfer Section ......................................................................... 75
14.2.2 2st Image Transfer Section ......................................................................... 76
14.3 Operation ............................................................................................................ 76
14.3.1 Transfer belt speed control.......................................................................... 76
14.3.2 1st Image Transfer Roller mechanism......................................................... 77
14.3.3 2nd image transfer roller pressure mechanism........................................... 82
14.3.4 IDC sensor shutter mechanism................................................................... 84
14.3.5 ATVC (Auto transfer voltage control)........................................................... 85
14.3.6 Transfer belt cleaning .................................................................................. 86
14.3.7 2nd image transfer roller cleaning............................................................... 87
14.3.8 Charge neutralization and separation of paper ........................................... 88
14.3.9 Detection of new transfer belt unit............................................................... 89
14.3.10 Pressure/retraction control during ACS mode............................................. 90
14.3.11 Electric discharge control before the 2nd image transfer ............................ 92
15. Toner collecting section ......................................................................................... 93
15.1 Composition........................................................................................................ 93
15.2 Drive ................................................................................................................... 94
15.3 Operation ............................................................................................................ 95
15.3.1 Toner collecting mechanism........................................................................ 95
15.3.2 Waste toner agitation control ...................................................................... 96
15.3.3 Waste Toner Box-in-position detection........................................................ 96
15.3.4 Waste Toner Near-Full/Full detection control .............................................. 97
16. Paper feed section................................................................................................. 99
16.1 Composition........................................................................................................ 99
16.1.1 Tray1, 2 ....................................................................................................... 99
16.1.2 Tray3 ......................................................................................................... 100
16.1.3 Tray4 ......................................................................................................... 101
16.2 Drive ................................................................................................................. 102
16.2.1 Tray1, 2 ..................................................................................................... 102
16.2.2 Tray3 ......................................................................................................... 103
16.2.3 Tray3 horizontal transport.......................................................................... 103
16.2.4 Tray4 ......................................................................................................... 104
16.3 Operation .......................................................................................................... 105
16.3.1 Tray1, 2 ..................................................................................................... 105
16.3.2 Tray3, 4 ..................................................................................................... 111
17. Bypass section .................................................................................................... 119
17.1 Composition...................................................................................................... 119
17.2 Drive ................................................................................................................. 120
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