Optical Path - Ricoh G035 Service Manual

LASER EXPOSURE

2.2.2 OPTICAL PATH

[I] [G] [E]
[F]
[D]
[B]
[C]
[A] [H]
G035D501.WMF
The output path from the laser diode to the drum is shown above.
The LD unit [A] outputs two laser beams to the polygon mirror [B] through the
cylindrical lens [C] and the shield glass [D].
Each surface of the polygon mirror reflects two full main scan lines. The laser
beams go to the F-theta mirror [E], mirror [F], and BTL (barrel toroidal lens) [G].
Then these laser beams go to the drum through the toner shield glass [H].
The laser synchronizing detector [I] determines the main scan starting position.
SM 2-11 G035