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OPTICS
3.4 HORIZONTAL LENS DRIVE
[A]
Enlarge
HP
Reduce
The original horizontal position on the exposure glass varies depending on
the mode (such as platen, DJF and RDH modes) for easy original handling.
However, the center is the standard position for paper feed.
Therefore, the lens horizontal position has to be changed according to paper
size, reproduction ratio, original feed modes and the edit modes (centering,
margin adjust, etc.).
A stepping motor (approx. 0.07 mm/step) is used to drive the lens through the
lens drive belt.
The lens horizontal home position sensor [A] is used to detect the lens
horizontal position for A4/LT sideways, in full size and platen mode.
The other positions are determined by counting the number of motor drive
pulses.
Since this model has a horizontal lens drive mechanism, side-to-side
registration adjustment for each feed station can be done easily by using SP
mode (
SP Adjustment - PAGE 4).
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