Image Edges Are Blurred Or White Banding Occurs - Canon imagePROGRAF iPF815 User Manual

Cause
You are printing on paper that curls
easily.
Printed colors may be uneven if you
set the Print Quality too low.
Color may be uneven between dark
and light image areas.
When borderless printing is used,
the edge of the paper is cut during
printing. Thus, ink density may be
uneven at the edges.
The Printhead is out of alignment.
Drying documents stacked on each
other may cause uneven colors.
Color density may be uneven if you
use Glossy Paper, art paper, or Coat-
ed Paper.
The type of paper specified in the
printer driver does not match the
type loaded in the printer.
Scan Wait Time > Area in the
Control Panel menu is set to Lead-
ing edge.

Image Edges are Blurred or White Banding Occurs

Cause
The Platen suction is too strong.
iPF815
Troubleshooting
Printed colors may appear uneven on the leading edge of paper that is suscepti-
ble to curling. Increase the level of vacuum holding the paper against the Platen
or specify a margin of 20 mm (0.79 in.) or more for the leading edge.
(See "Adjusting the Vacuum Strength (VacuumStrngth).")
Choose a higher level of Print Quality in the Advanced Settings of the printer
driver.
Printing in Draft or Standard mode is faster and consumes less ink than in
Highest or High modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Print-
ing.")
→P.55
Select Unidirectional Printing in the Advanced Settings of the printer driver.
Specify No in Auto Cut in the printer driver before printing. In this case, the
paper can be printed without borders on the left and right sides only. Cut the
printed document ejected from the printer, then use scissors to cut away the
edges on the top and bottom.
Choose a higher level of Print Quality in the Advanced Settings of the printer
driver.
(See "Giving Priority to Particular Graphic Elements and Colors for Print-
ing.")
→P.55
Adjust the Printhead alignment.
(See "Automatic Straightening of Lines and Colors (Auto Head Adj.).")
→P.668
To avoid uneven colors, we recommend drying each sheet separately.
In Advanced Settings of the printer driver, choose Highest or High in Print
Quality.
Load paper of the same type as you have specified in the printer driver.
(See "Loading Rolls in the Printer.")
(See "Loading Sheets in the Printer.")
Make sure the same type of paper is specified in the printer driver as you have
loaded in the printer.
1. Hold down the Stop button for a second or more to cancel printing.
2. Change the type of paper in the printer driver and try printing again.
When Scan Wait Time > Area is set to Leading edge, colors may be uneven
110–160 mm from the leading edge. (The position varies depending on the
Print Quality setting.)
In this case, select Scan Wait Time > Area > Entire area.
However, note that printing will now take longer.
(See "Main Menu Settings.")
Set VacuumStrngth to Weakest.
(See "Adjusting the Vacuum Strength (VacuumStrngth).")
> Problems with the printing quality
Corrective Action
→P.628
→P.651
→P.722
Corrective Action
Image Edges are Blurred or White Banding Occurs
>
→P.683
12
871
→P.683