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November 29, 1999
2.2.2 LASER EXPOSURE
Overview
This machine uses a laser diode to produce electrostatic images on an OPC drum.
The laser diode unit converts image data from the FCU into laser pulses, and the
optical components direct these pulses to the drum.
Exposure of the drum by the laser beam creates the latent image. The laser beam
makes the main scan while drum rotation controls the sub scan.
Strength of the beam output
Strength of the beam on the drum
Beam size
The speed of polygonal mirror motor depends on the printing mode.
Printing Mode
400dpi printing
15.4 dpmm normal printing
15.4 dpmm image rotation
printing
600 dpi printing
5 mW
0.612 mW
72 X 90 µm
Speed of mirror motor
(Hz)
1503.9
1470.5
1527.8
2255.9
2-9
Occasion
Copying, printing reports, receiving
Receiving
Receiving in image rotation mode
Printing in printer mode
PRINTER
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