Canon Color Image Reader - L1 Service Manual page 16

2
Technology
At start key ON (DADF mode/1 sheet original)
Stream
Home
reading
position
position
1. HP positioning
2. move to shift
shading start position
3. move to shift shading
4. fixed shading
- white plate dust detection
- shading correction
*2
5. Steam reading position
move to shift
6. original stream
reading scan
6. shifts to point of
the stream reading
glass dust detection
7. Completion operation
*1: Executed only if 1 min or more (power off) has passed from the previous session.
*2: [Reference] Technology > Controls > Dust detection > Stream reading glass dust detection control
*3: Shifts only if the DADF is open.
*4: Shifts only if the DADF is close.
2
Technology
Original
Shading Image
Shading size Stop
start leading
position detection position
position edge
position
*1
*1
*3
*4
*4
2-5
2-5