Toshiba 4560 Service Manual page 66

(4) Lens unit
It is driving by the lens motor. The reflected light from mirror 3 is reversed at the lens focus, and
conducted to mirror 4 (mentioned later).
(5) Mirror unit
The mirror unit consists of mirror 4 and 5, and conducts the reflected light passing the lens to mirror
6 via mirror 4 and 5. This is driven by the mirror motor. Changing of positions of the lens unit and
mirror unit alters the reproduction ratio of the vertical direction of paper transport (lateral reproduc-
tion ratio).
When the distance of the light path is equal between the original surface and the lens focus and the
lens focus and the drum surface, actual-size copying is obtained.
When the former is longer, reproduction copying is performed, and when shorter, enlargement
copying.
4560/4570 OPTICAL
Lens unit
Mirror 4
Mirror unit
7 - 4
Lens
Mirror 5
Nov. 1997 © TOSHIBA