Colors In Printed Images Are Uneven; Image Edges Are Blurred Or White Banding Occurs - Canon IPF850 User Manual

iPF850

Colors in printed images are uneven

Colors in printed images are uneven
Cause
Line Drawing/Text is selected when
printing images in many solid colors.
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 slightly un-
even at the leading edges.
The Printhead is out of alignment.
Allowing printed documents to dry on
top of each other may cause uneven
colors.
Density may be uneven if you use
Glossy Paper or Coated Paper.
The type of paper specified in the print-
er driver does not match the type loa-
ded in the printer.
Scan Wait Time > Area in the Control
Panel menu is set to Leading edge.

Image edges are blurred or white banding occurs

Image edges are blurred or white banding occurs
Cause
The Platen suction is too strong.
Incorrect Printhead alignment value.
The type of paper specified in the
printer driver does not match the type
loaded in the printer.
User's Guide
In Print Priority in the Advanced Settings of the printer driver, choose Image.
Printed colors may appear uneven on the leading edge of paper that is susceptible to curl-
ing. Select a stronger level in VacuumStrngth in the Control Panel menu to increase suc-
tion against the paper, or specify a leading margin of 20 mm (0.79 in) or more.
(See "Adjusting the Vacuum Strength.")
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 or
High modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Printing.")
Select Unidirectional Printing in the Advanced Settings of the printer driver.
Specify No in Automatic Cutting in the printer driver before printing. In this case, the pa-
per can be printed without borders on the left and right sides only. Cut the printed docu-
ment 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.")
Adjust the Printhead alignment.
(See "Automatic Adjustment to Straighten Lines and Colors.")
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.
Press the Stop button and stop 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 "Menu Settings.")
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In the Control Panel menu, reduce the level of VacuumStrngth.
(See "Adjusting the Vacuum Strength.")
Close the blue Switch on the platen so that it matches the paper size.
(See "Setting the Blue Switch on the Platen.")
In the Control Panel menu, set Head Height to a lower height.
(See "Troubleshooting Paper Abrasion and Blurry Images.")
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.
Press the Stop button and stop printing.
Colors in printed images are uneven
Corrective Action
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Corrective Action
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