Minolta EP1030 - Synchronizing Roller Systems

1159SBM1_ 700A
wa SYNCHRONIZING ROLLERS
The Synchronizing Rollers, operating in phase with the Scanner scan motion and
paper feeding, synchronize the leading edge of the copy paper accurately with the
leading edge of the toner image on the PC Drum.
The Upper Synchronizing Roller is a metal roller covered with a polyvinyl chloride
tubing, while the Lower one is a rubber roller.
Registration
Clutch
Lower Synchronizing Roller
Paper Transport Sensor
1151M026AA
To facilitate clearing of misfeeds, the Upper Synchronizing Roller is installed in the
Imaging Unit. It is fitted to the Guide Frame of the Imaging Unit and the
Compression Springs at the front and rear ends press the Roller downward so that
it makes contact with the Lower Synchronizing Roller. The Lower Roller is driven
by the drive source a gear train transmits the rotation of the Lower Roller to the
Upper Roller, thus ensuring good paper transport performance.
Upper Synchronizing
Roller
Paper Transport
Sensor
=
ia
Actuator
1159M025AA
Lower Synchronizing
Roller
M-42
1159SBM1701A
17-1. Upper Synchronizing Roller Positioning
Since the Upper Synchronizing Roller is fitted to the Imaging Unit, it must be
correctly positioned with reference to the Lower Synchronizing Roller when the
Upper Half of the copier is swung down into the locked position. For this purpose,
slits are cut in the lower copier frame and the Bushings of the Upper Synchronizing
Roller fit into these slits.
Lower Copier Frame
Upper Synchronizing shaft
mA
cy
1159MO26AA
18OSBM1702A
17-2, Paper Dust Remover
The Paper Dust Remover is installed so that it makes contact with the Upper
Synchronizing Roller, Since the Upper Synchronizing Roller is covered with a vinyl
tubing, triboelectric charging occurs as the Rollertums in contact with the Paper
Dust Remover. As paper is then fed between the Synchronizing Rollers, the
charges on the tubing attract paper dust from the paper. The dust is then transferred
onto the Paper Dust Remover.
Paper Dust Remover
Upper Synchronizing Roller
1139M071AA
Lower Synchronizing Roller
M-43