Printing Mechanism - Panasonic UF-580 Service Manual

6.1.3.

Printing Mechanism

The Receive Mechanism consists of the Laser Unit (LSU), OPC (Organic Photo Conductor) Drum, and
various other parts which ensure the normal feeding of recording paper. These components and their
functions are as follows:
Paper Feed Solenoid (531)
No Paper Actuator (525)
2nd Cassette (Option)
Paper Feed Units No.1 and 2
The Paper Feeder Unit No. 2 is available as an option.
Paper Feed Unit No.1 Operation
1. The printing operation begins when the nPRNT (Print Request) output signal level goes Low. The
Printer Motor (626) is initialized.
2. The Paper Feed Solenoid (531) is energized for a specified period of time and turned ON. This
activates the Paper Feed Roller (518), which rotates one revolution. The paper is separated into
individual sheets by the L and R Paper Separation Clips (809 and 811) and transported to the Feed
Roller (526).
3. After one revolution the Paper Feed Roller (518) stops, releasing the paper. The Feed Roller (526)
transports the paper to the drum area.
4. The actual printing process starts at a specified time after the Timing Actuator (609) is activated and
stops at a a specified period of time after the trailing edge clears the Timing Actuator (609).
Feed Roller (526)
Toner Cartridge
Paper Feed Roller (518)
Laser Unit (512)
No Paper Actuator (922)
Fuser Unit (701)
OPC Drum
Paper Feed Roller (911)
Paper Feed Solenoid (908)
189
Paper Direction
Paper Exit Actuator (730)
Bias Transfer Roller (604)
Timing Actuator (609)
Printer Motor (626)
Feed Roller 2 (904)