Optics; Overview - Ricoh FT5540 Service Manual

3. OPTICS

3.1 OVERVIEW

During the copy cycle, an image of the original is reflected onto the surface of the drum [I] via
the optics assembly. The optics assembly consists of the following parts:
1. First Scanner [A]:
Exposure lamp [B] (85V, 160W)
First mirror
AD (Auto Density) sensor [C]
2. Second Scanner [D]:
Second mirror
Third mirror
3. Lens (F5, f = 215 mm) [E]
4. Fourth and Fifth Mirror Assembly [F]:
Fourth Mirror
Fifth Mirror
5. Sixth Mirror [G]:
6. Toner Shield Glass [H]
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31 August 1989