Konica Minolta magicolor 5550 Service Manual page 33

17.3 Operation............................................................................................................ 66
17.3.1 Media lift plate mechanism ......................................................................... 66
17.3.2 Media separation mechanism..................................................................... 67
17.3.3 Media feed control ...................................................................................... 67
17.3.4 Media supply level detection control ........................................................... 68
17.3.5 Media empty condition detection control .................................................... 68
17.3.6 Edge guide plate......................................................................................... 69
17.3.7 Trailing edge guide plate............................................................................. 69
17.3.8 Tray open/close detection control ............................................................... 70
17.3.9 Media misfeed detection control ................................................................. 70
18. Conveyance section (IDC sensor)......................................................................... 71
18.1 Composition ....................................................................................................... 71
18.1.1 Drive ........................................................................................................... 72
18.2 Operation............................................................................................................ 72
18.2.1 Toner density detection control ................................................................... 72
18.2.2 IDC sensor calibration control..................................................................... 73
18.2.3 IDC sensor shutter mechanism .................................................................. 73
19. Conveyance section (Registration roller) .............................................................. 74
19.1 Composition ....................................................................................................... 74
19.2 Drive ................................................................................................................... 74
19.3 Operation............................................................................................................ 75
19.3.1 Conveyance speed control ......................................................................... 75
19.3.2 Registration roller control............................................................................ 75
19.3.3 Control of loop formed before registration roller ......................................... 76
19.3.4 Control of loop formed before 2nd transfer ................................................. 77
19.3.5 Control of loop formed before fusing section .............................................. 78
19.3.6 Media neutralization.................................................................................... 79
19.3.7 OHP transparencies detection control ........................................................ 80
19.3.8 Media size error detection control............................................................... 81
19.3.9 Conveyance system media misfeed detection control ................................ 82
19.3.10 Remaining media detection control when the main power switch
is turned ON ............................................................................................... 84
19.3.11 Temperature/humidity sensor ..................................................................... 84
20. Fusing section....................................................................................................... 85
20.1 Composition ....................................................................................................... 85
20.2 Drive ................................................................................................................... 86
20.3 Operation............................................................................................................ 87
20.3.1 Fusing pressure roller pressure selection mechanism ............................... 87
20.3.2 Fusing pressure roller drive control ............................................................ 88
iv
Theory of operation Ver. 1.0 Nov. 2006