Konica Minolta 5430 DL 5440 DL 5450 - Manual (Page 23)

magicolor 5430 DL /5440 DL Theory of Operation
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4.2.3 Toner near-empty condition detection ........................................................ 2-15
4.2.4 Toner empty condition detection................................................................. 2-17
4.2.5 Toner replenishing mechanism/control....................................................... 2-19
5. Toner Cartridge / Photo Conductor .................................................................... 2-22
5.1 Composition .................................................................................................... 2-22
5.2 Operation......................................................................................................... 2-22
5.2.1 Photo Conductor drive mechanism ............................................................ 2-22
5.2.2 Photo Conductor post-exposure control ..................................................... 2-23
5.2.3 Photo Conductor total exposure control upon recovery ............................. 2-23
5.2.4 Photo Conductor small amount rotation control ......................................... 2-24
6. Toner Cartridge / Charge corona section ........................................................... 2-25
6.1 Composition .................................................................................................... 2-25
6.2 Operation......................................................................................................... 2-26
6.2.1 Charge Corona Unit ON/OFF control ......................................................... 2-26
6.2.2 Output during pre-process ......................................................................... 2-26
6.2.3 Output during post-process ........................................................................ 2-26
6.2.4 Ozone ventilation mechanism .................................................................... 2-27
7. Toner Cartridge / Developing Unit ...................................................................... 2-28
7.1 Composition .................................................................................................... 2-28
7.2 Operation......................................................................................................... 2-30
7.2.1 Developing drive control ............................................................................. 2-30
7.2.2 Toner flow ................................................................................................... 2-31
7.2.3 Developing system ..................................................................................... 2-32
7.2.4 Developing bias Vpp control (Ds compensation control)............................ 2-33
7.2.5 Developing bias duty control (compensation control of the maximum
amount of toner sticking to the Transfer Belt) ............................................ 2-34
7.2.6 Gamma correction control .......................................................................... 2-35
7.2.7 Cleaning mechanism.................................................................................. 2-36
8. 1st transfer section............................................................................................. 2-37
8.1 Composition .................................................................................................... 2-37
8.2 Drive ................................................................................................................ 2-39
8.3 Operation......................................................................................................... 2-40
8.3.1 Transfer Belt speed control......................................................................... 2-40
8.3.2 1st transfer output control........................................................................... 2-40
8.3.3 1st Transfer Roller pressure/retraction control............................................ 2-41
8.3.4 1st Transfer Roller pressure/retraction failure detection control ................. 2-44
8.3.5 Transfer Belt cleaning ................................................................................. 2-45
8.3.6 Toner Collecting Port Shutter mechanism .................................................. 2-46
9. 2nd transfer section............................................................................................ 2-47
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