COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-81
3. OPERATION AND TIMING
4. Correcting a Discrepancy in
Reproduction Ratios
If the distances between centers (Lm and Ly
in Figure 3-432) are different, the reproduction
ratio in the main scanning direction is likely to be
incorrect. Here, correction is made so that Ly will
be closer in value to Lm.
Figure 3-432
The correction is made by shifting the image
position correction mirror horizontally, thereby
changing the length of the optical path for the laser
beam (Figure 3-433).
In the case of Figure 3-432, the length of the
optical path is increased, thereby increasing the
width of scanning.
Figure 3-433
Feeding
direction
M
Lm
Y
Ly
Y drum
Polygon mirror
Polygon mirror
Image position
correction mirror
Image position correction mirror
Содержание Vizcam 1000
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