Laser Exposure
Laser Exposure Overview
1 LD unit 6 Synchronization detector
2 Cylindrical lens 7 BTL (Barrel Toroidal Lens)
3 Polygonal mirror 8 F-theta mirror
4 Shield glass 9 Toner shield glass
5 Mirror
This machine uses two laser diodes to produce electrostatic images on an OPC drum. The laser diode unit
converts image data from the BICU board into laser pulses, and the optical components direct these pulses
to the drum. To produce a high quality copy image, these are 256 gradations for the laser power.
The output path from the laser diode to the drum is shown above. The LD unit outputs two laser beams to
the polygon mirror through the cylindrical lens and the shield glass.
6. Details
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