Synchronizing Rollers; 15-L .Upper Synchronizing Roller Positioning - Minolta EPI 054 User Manual

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
1174SBM1500A
15

SYNCHRONIZING ROLLERS

The Synchronizing Rollers, operating in phase with the Scanner's 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.
Upper Synchronizing Roller
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 Syn-
chronizing Roller. The Lower Roller is driven by the drive source, while there is a gear train
that transmits the rotation of the Lower Roller to the Upper Roller, thus ensuring good paper
transport performance.
To ensure good image transfer during conditions of high humidity, the Pre-Synch Guide
Plate is electrically floated by a plastic spacer, grounded through an 82MΩ resistor and 1kV
varistor.
Upper Synchronizing Roller
Pre-Image Transfer
Guide Plate
Lower Synchronizing Roller
Lower Synchronizing Roller
Paper Leading Edge Detecting
Sensor PC54
Compression Spring
Paper Leading Edge
Detecting Sensor PC54
1139M069AA
Actuator
M-57
Synchronizing
Roller Clutch CL1
1151M026AA
Guide Frame
Pre-Synch Guide Plate