Optical Path; Overview - Ricoh Aficio Color 3006 Service Manual

24 February, 1999 LASER EXPOSURE

2.6.2 OPTICAL PATH

Overview

[B]
[G]
[C]
[F]
[H]
[D]
[A]
[E]
[J]
[I]
A259D102.WMF
The output path from the laser diode to the drum is shown above.
The LD unit [A] sends a laser beam to the polygon mirror [G] through the cylindrical
lens [H].
Each side of the polygon mirror reflects a full main scan line. The laser beam goes
through the f-theta lens [B] and BTL [C]. The drum mirror [D] reflects the laser
beam onto the drum [I] through the toner shield glass [J].
The laser synchronizing detector boards [E, F] determine the main scan starting
position, and detect variations in the time required to make a main scan.
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