Olivetti d-Color MF550, Theory Of Operation

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Outline
Composition/Operation
Theory of Operation Ver. 8.0 Jun. 2008
iv
17.3 Operation.......................................................................................................... 1
17
17.3.1 Bypass paper take-up control ................................................................... 1
17
17.3.2 Paper empty detection .............................................................................. 1
17
17.3.3 Bypass paper lifting motion control........................................................... 1
18
17.3.4 Paper size detection ................................................................................. 1
19
17.3.5 Bypass unit open/close mechanism ......................................................... 12
1
17.3.6 Bypass sub tray open/close detection ...................................................... 12
1
18. Timing roller section............................................................................................ 12
2
18.1 Composition ..................................................................................................... 12
2
18.2 Operation.......................................................................................................... 12
3
18.2.1 Timing roller control .................................................................................. 12
3
18.2.2 OHP detection .......................................................................................... 12
4
18.2.3 Speed control............................................................................................ 12
5
19. Fusing section..................................................................................................... 1
26
19.1 Composition ..................................................................................................... 1
26
19.2 Drive ................................................................................................................. 1
28
19.3 Operation.......................................................................................................... 1
29
19.3.1 Heating roller structure ............................................................................. 1
29
19.3.2 Whole area heating/Center heating switch control ................................... 1
29
19.3.3 Fusing roller drive control ......................................................................... 13
1
19.3.4 Fusing loop control ................................................................................... 13
2
19.3.5 Fusing pressure roller pressure/retraction mechanism............................. 13
3
19.3.6 Fusing temperature control....................................................................... 13
4
19.3.7 Protection from abnormally high temperature........................................... 14
0
19.3.8 Sensor disconnection detection control .................................................... 14
2
19.3.9 Heating roller rotate detection................................................................... 14
2
19.3.10 Detection of a new fusing unit................................................................... 14
2
19.3.11 PPM control .............................................................................................. 14
3
20. Paper exit section................................................................................................ 14
5
20.1 Composition ..................................................................................................... 14
5
20.2 Drive ................................................................................................................. 1
46
20.3 Operation.......................................................................................................... 1
47
20.3.1 Switchback control .................................................................................... 1
47
21. Duplex section .................................................................................................... 1
48
21.1 Composition ..................................................................................................... 1
48
21.2 Drive ................................................................................................................. 1
49
21.2.1 Duplex unit drive ....................................................................................... 1
49
21.3 Operation.......................................................................................................... 15
0
21.3.1 Duplex unit transport control..................................................................... 15
0