CHAPTER 3 IMAGE READING/PROCESSING SYSTEM
COPYRIGHT© 2002 CANON INC.
2000
CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
3-15
The machine varies the ratio based on a linear correction method.
The CCD inside the CS unit is fixed in position so that the position of each pixel within
the image data generated by reading an original is also fixed in position. To vary the re-
production ratio, the position of each pixel, therefore, must be changed. However, since
the CCD is not found at each specific position, the machine relies on computation to gen-
erate image data that expresses a selected ratio; specifically, the original image data items
indicating the 2 points before and after a specific pixel are subjected to computation, with
the result indicating pixels enlarged/reduced to a specific ratio.
F03-408-01
Enlargement
CCD read position
(in Direct)
Reduction
Virtual CCD read position
(for enlargement)
CCD read position
(in Direct)
Virtual CCD read position
(for reduction)
Summary of Contents for iR1600 Series
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Page 665: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 1 INTRODUCTION...
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Page 671: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 2 BASIC OPERATION...
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Page 679: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 3 TROUBLESHOOTING...
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