Canon F1 Service Manual page 39

2
Technology > Controls > Reader > Dust detection control
● Dust detection correction control (continuous lines)
The machine detects and corrects the lines due to the detected dust between sheets.
This correction targets the lines due to the detected dust by the stream reading glass dust
detection.
Refer to the Dust detection correction control (non-continuous lines) for the difference with
non-continuous lines.
Before reading
Platen roller 1
Original
Attached dust
Stream reading
glass
Scanning position
2 Technology > Controls > Reader > Dust detection control
After reading
It is attached on
the stream
reading glass.
F-2-56
Result of reading
F-2-57
F-2-58
2-26
2-26