Cause Corrective Action
In the Control Panel menu, Adj. Priority is
set to Print Length.
Setting Adj. Priority to Print Quality in the Control Panel menu and adjusting the feed amount
may improve results.
(See "Adjusting the Feed Amount.") →P.805
The Printhead is out of alignment. Adjust the Printhead alignment.
(See "Automatic Adjustment to Straighten Lines and Colors.") →P.798
The Printhead nozzles are clogged. Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.") →P.838
Streaks may occur if you set the Print Quali-
ty too low.
Choose a higher level of Print Quality in the Advanced Settings of the printer driver and try
printing again.
Printing in Fast or Standard mode is faster and consumes less ink than in Highest quality or
High modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Printing.") →P.61
The type of paper specified in the printer driv-
er does not match the type loaded in the
printer.
Load paper of the same type as you have specified in the printer driver.
(See "Loading Rolls in the Printer.") →P.533
(See "Loading Sheets in the Printer.") →P.555
Make sure the same type of paper is specified in the printer driver as you have loaded in the
printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Colors in printed images are uneven
Colors in printed images are uneven
Cause Corrective Action
Line Drawing/Text is selected when printing
images in many solid colors.
In Print Priority in the Advanced Settings of the printer driver, choose Image.
You are printing on paper that curls easily. Printed colors may appear uneven on the leading edge of paper that is susceptible to curling.
Select a stronger level in VacuumStrngth in the Control Panel menu to increase suction
against the paper, or specify a leading margin of 20 mm (0.79 in) or more.
(See "Adjusting the Vacuum Strength.") →P.811
Printed colors may be uneven if you set the
Print Quality too low.
Choose a higher level of Print Quality in the Advanced Settings of the printer driver.
Printing in Fast or Standard mode is faster and consumes less ink than in Highest quality or
High modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Printing.") →P.61
Color may be uneven between dark and light
image areas.
Select Unidirectional Printing in the Advanced Settings of the printer driver.
When borderless printing is used, the edge of
the paper is cut during printing. Thus, ink
density may be slightly uneven at the leading
edges.
Specify No in Auto Cut in the printer driver before printing. In this case, the paper can be prin-
ted without borders on the left and right sides only. Cut the printed document ejected from the
printer, and then use scissors or a cutting tool 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 Printing.") →P.61
The Printhead is out of alignment. Adjust the Printhead alignment.
(See "Automatic Adjustment to Straighten Lines and Colors.") →P.798
Allowing printed documents to dry on top of
each other may cause uneven colors.
To avoid uneven colors, we recommend drying each sheet separately.
Density may be uneven if you use Glossy
Paper or Canon Coated Paper.
In Advanced Settings of the printer driver, choose Highest quality or High in Print Quality.
The type of paper specified in the printer driv-
er does not match the type loaded in the
printer.
Load paper of the same type as you have specified in the printer driver.
(See "Loading Rolls in the Printer.") →P.533
(See "Loading Sheets in the Printer.") →P.555
Make sure the same type of paper is specified in the printer driver as you have loaded in the
printer.
Colors in printed images are uneven
iPF9400
User's Guide
Troubleshooting Problems with the printing quality
892
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