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6. Correcting a Discrepancy in the
Sub Scanning Direction
If the coordinates of centers in the pattern are
different (in Figure 3-437, AX is not 0), the image
start position in the sub scanning direction is like-
ly to have a discrepancy. Correction is made so
that AX will be closer to 0. (In the case of Figure
3-437, the Y start position will be advanced until it
is the correct position.)
The correction is made by varying the read enable signal for the Y, C, and Bk video signals (T2 of Figure
3-438). In the case of Figure 3-437, T2 is extended to delay the timing for the Y image start.
Image leading signal (ITOP)
Y read enable signal (YMRE)
Y print enable signal (YPE)
Y print area signal (YFRM)
1997 CANON INC.
Figure 3-438
REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU
CANON CLClOOO
3. OPERATIONS AND TIMING -
Correct center
Feeding direction1
Figure 3-437
1st page
I
,
Y
3
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