Original Position Detection Circuit - Canon 1130 Service Manual

CHAPTER 4 IMAGE PROCESSING SYSTEM
E. Original Position Detection Circuit
The original position detection circuit is used to find out the size and position of an original on
the copyboard. It identifies an original as being a rectangle (or a square) possessing coordinates
X1/Y1 and X2/Y2 found on the ends of a diagonal line.
Part 2>Chapter 3>2.15
If an RDF is installed, the position of an original placed on the copyboard glass
cannot be checked.
4-8
COPYRIGHT © 2002 CANON INC.
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X1
P1
Y1
Y2
Figure 4-405
CANON CLC1100/1130/1150/1160/1180 REV.2 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
X2
P2
Copyboard