Image Processing; Outline - Canon iR2020 Series Service Manual

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- Immediately before scanning (one sheet at a time)
The contact image sensor (CIS) does not move to detect dust.
The original is read at the position determined at job end or start. If presence of dust is detected there, the read image is corrected.

4.3.6 Image Processing

4.3.6.1 Outline

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Major specifications and functions of the image processing system are as follows:
A
B
C
F-4-23
T-4-5
Point
Description
A
Read reference position
B
out 0.5 mm from the reference position to the inside of the
roller
C
About 1.0 mm from the reference position to the inside of
the roller
0.5mm
0.5mm
A B C
Stream
reading
Lens
glass
LED
F-4-24
Platen roller
Contact image sensor
(CIS)
Chapter 4
0010-4258
4-11

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Ir2016 series

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