Photo Conductor Phase Control - Konica Minolta BizHub C360 Service Manual

Theory of Operation Ver. 1.0 Jul. 2009
10.3.2

Photo conductor phase control

• The drive source of the photo conductor/K is the transport motor. The drive source of the
color photo conductors/Y, M, C is the color PC motor. The three photo conductor drive
gears/Y, M, C are connected by gears to each other and the photo conductors/Y, M, C is
always in the same phase.
• The photo conductor/K and the photo conductors/Y, M, C use a different drive source to
rotate themselves.
• Drive to the photo conductors is provided by photo conductor drive gears/Y, M, C and the
photo conductor drive gear/K. If these eccentric gears can not synchronize with each
other in their eccentric rotation, rotational speed variations between the photo conduc-
tors may happen. By synchronizing the eccentric rotation of the photo conductor drive
gears/Y, M, C with that of the photo conductor drive gear/K, rotational speed variations
between the photo conductors/Y, M, C and the photo conductor/K can be eliminated.
• The photo conductor phase control system synchronizes the phase of all photo conduc-
tor drive gears by adjusting the rotation start timing of the drive gears/Y, M, C and the
photo conductor drive gear/K when the photo conductors start rotating.
• The phases of the gears are detected by color PC sensor (Main/Sub) and the mono-
chrome PC sensor (Main/Sub) which are located on the photo conductor drive gear/C
and photo conductor drive gear/ K, respectively.
* Back view
Photo conductor drive gear/K
Monochrome PC sub-sensor
(PS36)
Photo conductor drive gear/C
Monochrome PC main sensor
(PS34)
10. PHOTO CONDUCTOR SECTION
Color PC main sensor (PS33)
Color PC sub-sensor (PS35)
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