Panasonic Panafax UF-885 Service Manual page 197

Panasonic UF-885 / 895
Cleaning
After transfer, some toner may remain on the surface of the OPC Drum. A Cleaning Blade scrapes the OPC Drum surface, and
the removed toner is moved into the Toner Waste Box, inside the Toner Cartridge.
Fusing
After separation, the paper passes through the Fuser Rollers and is subjected to heat and pressure in the Fuser Unit (431).
Pressure between the Fuser Roller (414) [heated internally by the Fuser Lamp (408) to approximately 190°C (±10°C) (or
374°F)] and Pressure Roller (409) fuses or bonds the toner into the paper.
Laser Unit
Laser
A 5 mW Laser Diode, with a wave length of 780 nm (±20 nm), provides a modulated beam controlled by nVIDEO. The beam
power on the drum surface is approximately 0.23 mW, and is controlled by the monitor circuit.
Collimator Lens
This lens converges and focuses the laser beam, converting it to parallel light.
Aperture
This controls the size of the laser beam.
Polygon Mirror and Motor
The polygon scanner consists of a 6-sided mirror, directly driven by a Polygon motor, revolving at 10,000 rpm. The laser beam i s
reflected against these mirrors and swept over the recorded width in the scanning direction. This unit features a stable line
scanning speed, a precision mirror reflection angle, a reflection free surface, and instant start.
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