Specifications

3.4 4TH AND 5TH MIRROR DRIVE
3.4.1 Drive
The 4th/5th mirror drive motor (stepper motor) changes the 4th/5th mirror
assembly position through the pinion gears [A] and the rack gear [B] in
accordance with the selected reproduction ratio to provide the proper optical
distance between the lens and drum surface.
3.4.2 Positioning
The positioning mechanism is similar to that of lens positioning, as shown in
the above positioning chart. The scanner always stops while moving from
right to left (as viewed from the front).
[B]
[A]
Home Position (100%)
(100% → 141/155%)
(141/155% → 71/65%)
(71/65% → 93%)
(93% → 71/65%)
(71/65% → 141/155%)
(141/155% → 122/129%)
(122/129% → 100%)
(100% → 71/65%)
(71/65% → 100%)
1 December 1990
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