Laser Exposure [All Models]; Overview - Ricoh G112 Service Manual

6.3.2 LASER EXPOSURE [ALL MODELS]

Overview

11
10
9
1. LD unit
2. Laser shutter
3. Shield glass
4. Polygon mirror
5. F-Theta lens
6. Drum
• Synchronization detector: The 1st mirror, 2nd mirror, and the detector mirror
reflect the beam from the LD unit to the synchronization detector.
• Two laser beams: The LD unit writes two lines at the same time.
• LD safety shutter: When the user opens the front cover, the shutter closes and
blocks the laser beam path.
• After you replace the LD unit, adjust its position (see Replacement and
Adjustment).
• The thermistor next to the laser unit (not shown) checks the temperature inside
the machine. The machine automatically corrects the charge roller and transfer
voltages for this temperature.
SM
2
1
8
7. Synchronization detector
8. Toroidal lens
9. 1st mirror
10. 2nd mirror
11. Detector mirror
6-11
PRINTING PROCESS
3
7
G094D526.WMF
G112/G113/G116/G094/G095/G091
4
5
6