Adf Black Line - Canon imageRUNNER ADVANCE 6075 Series Service Manual

6
5-5) After the adjustment, output a test print and check the image to complete the
procedure.
NOTE:
If the image cannot be adjusted correctly even with this adjustment procedure, reenter
the values written in step 5-1.
6
Troubleshooting > Image Faults > ADF black line
Not Use
F-6-12
Troubleshooting > Image Faults > ADF black line

ADF black line

Image processing has been improved with this equipment, which applies optimal image
processing to the text part and the photo part respectively. Improvement in image processing,
however, highlights imperceptible dusts at the original scanning position, which may appear
as a line on the image.
Before Reading After Reading
Original
Platen roller 1
Platen roller 1
Stream reading
glass
Scanning position
[Location]
ADF
[Cause]
At stream reading with the ADF, imperceptible dusts (paper dust, toner, dust, etc.) adhere
and remain at the original scanning position, which causes a black line on the original image.
(Occurrence frequency is roughly 3/10,000 of scanning documents)
The dusts causing a black line are delivered outside the ADF together with the scanning
original; therefore, there will be no black line with the next original.
6-10
Result
It sticks on the
original during
scanning.
F-6-13
6-10