Konica Minolta BIZHUB 750 Service Manual page 103

Theory of Operation Ver1.0 Aug.2005
B. Pre-registration control
In the double sided print mode, when the ADU pre-registration sensor (PS50) detects the leading edge of paper
and turns ON [2], the ADU deceleration clutch (CL2) turns OFF a specified period of time after this to shut off the
drive force of the registration motor (M5) that has been transmitted to the ADU pre-registration roller 13 and 14.
At this time, the loop motor (M6) that drives the ADU pre-registration roller is turned OFF. In this way, the paper
hits against the ADU pre-registration roller to form a loop. And the skew of the paper is corrected by this loop.
Registration motor (M5)
ADU deceleration clutch (CL2)
Loop motor (M6)
ADU pre-registration sensor (PS50)
[1] Conveyance of the rear side of paper
[2] Detection of the leading edge of paper
[1] [3]
[2]
[3] Loop
20. ADU
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