Konica Minolta bizhub C250 Service Manual page 29

8.2.5 Laser emission area ................................................................................... 28
8.2.6 Registration control (color shift correction) system..................................... 29
8.2.7 Skew control mechanism ............................................................................ 30
9. Imaging unit section (IU section)........................................................................... 31
9.1 Composition ....................................................................................................... 31
9.2 Drive ................................................................................................................... 32
9.3 Operation............................................................................................................ 33
9.3.1 IU life control ............................................................................................... 33
10. Photo conductor section ....................................................................................... 35
10.1 Composition ....................................................................................................... 35
10.2 Drive ................................................................................................................... 35
10.3 Operation............................................................................................................ 36
10.3.1 PC drum drive mechanism ......................................................................... 36
10.3.2 PC drum phase control ............................................................................... 36
10.3.3 PC drum small amount rotation control ...................................................... 37
11. Charge corona section.......................................................................................... 38
11.1 Operation............................................................................................................ 39
11.1.1 PC drum charge corona ON/OFF control ................................................... 39
11.1.2 Cleaning/main erase mechanism ............................................................... 39
12. Developing section................................................................................................ 40
12.1 Composition ....................................................................................................... 40
12.2 Drive ................................................................................................................... 41
12.3 Operation............................................................................................................ 42
12.3.1 Developing drive control ............................................................................. 42
12.3.2 Developer flow ............................................................................................ 42
12.3.3 Developing bias .......................................................................................... 43
12.3.4 HMT (high grade micro toning) development.............................................. 43
12.3.5 TCR sensor control..................................................................................... 44
13. Toner supply section ............................................................................................. 45
13.1 Composition ....................................................................................................... 45
13.2 Drive ................................................................................................................... 46
13.3 Operation............................................................................................................ 47
13.3.1 Toner replenishing mechanism/control ....................................................... 47
13.3.2 Toner cartridge life control .......................................................................... 48
13.3.3 Shutter mechanism..................................................................................... 49
14. Transfer corona section......................................................................................... 50
14.1 Composition ....................................................................................................... 50
14.1.1 1st image transfer section........................................................................... 50
14.1.2 2nd image transfer section.......................................................................... 51
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Theory of operation ver. 3.0 Aug. 2006