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3. Correcting the Image Skew
The image is likely to be placed askew if the
center of the pattern is different between the rear
and the front. (In the case of Figure 3-430, the
angle 8 is not 0.) Here, correction is made so that
the angle 0 will be closer to O.The correction is
made by changing the tilt of the image position
correction mirror, thereby changing the scanning
angle of the laser beam (Figure
In the case of Figure 3-430, the image position
correction mirror is rotated in the direction shown
in Figure 3-431 so that the scanning angle will be
horizontal.
3-80
COPYRIGHT 0
3-431).
1997 CANON INC.
CANON CLClOOO REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME
Feeding direction
Front
F i g u r e 3 - 4 3 0
Laser
osition correctlon mlrror
F i g u r e 3 - 4 3 1
AU JAWN)
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