Dirt Sensor Control - Canon imageRUNNER 2530 Service Manual

2
Technology > Original Exposure System > Controls > Dirt Sensor Control
Before original size identification processes 1 and 2 are performed, the original size is
detected with original sensors as follows:
AB-Configration
Original Original Original Original Original
size sensor 0 sensor 2A
sensor 1 sensor 3
A3
A4
B4(8K)*1
B5(16K)*1
A4R
B5R(16K)*1
No original
*1: For Chinese paper, the following sizes are detected:
8K:Equivalent to B4 size
16K:Equivalent to B5 size
2 Technology > Original Exposure System > Controls > Dirt Sensor Control
Inch-Configration
Original Original Original Original
size
sensor 0 sensor 2B sensor 3
11"X17"
LTR
LGL
LTR-R
No original
:No original
:Change absent
F-2-23 F-2-23

Dirt Sensor Control

Overview
The machine changes the original read position or corrects the read image depending on the
presence/absence of dust on the stream reading glass or ADF platen
roller, thus preventing dust from showing up in the image. This control is performed only when
the ADF is used and it is closed.
[Control Timing]
- At job end
- Immediately before scanning (one sheet at a time)
Main power
Start key
switch
ON
ON
WMUPR STBY
Dust detection control
2-12
1st 2nd
SCAN SCAN
Dust detection control
Dust detection control
F-2-24 F-2-24
2-12