Canon PIXUS iP8600 Service Manual page 29

Streaks or uneven
printing at the
leading edge (from
top to approx. 3mm
down) or at the
8 C Print results
trailing edge (from
the bottom up to
approx. 18mm) on
specialty paper in
grayscale printing
Uneven printing at
the trailing edge
(from the bottom end
to approx. 20mm up)
9 C Print results
*1: Change the paper in each Bottom plate cleaning. The cleaning can end when paper does not get any soiling.
*2: Locations to clean in servicing when soiling on paper in automatic duplex printing persists:
* Occurrence level:
A: The symptom is likely to occur frequently. (Caution required)
B: The symptom may occur under certain conditions, but likeliness is assumed very low in practical usage.
C: The symptom is unlikely to be recognized by the user, and no practical issues are assumed.
Only when all the following - If paper is curled, the
conditions are met:
- Specialty paper (PR, SP, SG,
MP GP, etc.)
- Grayscale printing
- Paper is curled.
- Uneven printing at the
Only when both the following Incorrect bidirectional
positioning of the print
conditions are met:
head. (Inaccuracy in ink
- Photo Paper Plus Double
droplet placement at the
Sided (PP-101D)
trailing edge)
- Printing in dark flat color
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each side of paper.
- Cancel grayscale printing,
leading or trailing edge and print in colors.
contacts the ink absorber,
- To print color image in
preventing the dot
gray, change the image
placement accuracy,
color in gray using the
resulting in uneven
application, then print it
printing or streaks.
in colors.
- Straighten the paper.
trailing edge.
Perform print head
alignment.
- Perform automatic print
head alignment.
- If the problem is not
solved by automatic print
head alignment, perform
manual print head
alignment.
- Lines or uneven
printing at the top or
bottom of paper
Color hue differs (or
printing is uneven) in
the bottom area.
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