Laser Exposure; Overview - Gestetner G056 Service Manual

6.3.2 LASER EXPOSURE

Overview

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1. LD unit
2. Laser shutter
3. Shield glass
4. Polygon mirror
5. F-theta lens
6. Drum
• Synchronization Detector: The beam emitted from the LD unit is reflected by the
1st mirror, 2nd mirror, and the detector mirror to the synchronizing detector.
• Two-beam Laser Writing: The LD unit writes two lines at once.
• LD Safety Shutter: When the front cover is opened, the shutter closes to block
the laser beam path.
• After the LD unit has been replaced, its position must be adjusted (see
Replacement and Adjustment).
• The thermistor next to the laser unit (not shown) checks the temperature inside
the machine. The machine automatically adjusts the charge roller and transfer
voltages in response to this temperature.
SM
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1
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7. Synchronization detector
8. Toroidal lens
9. 1st mirror
10. 2nd mirror
11. Detector mirror
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PRINTING PROCESS
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G058D201.WMF
G056/G058