Banding In Different Colors Occurs; Colors In Printed Images Are Uneven - Canon imagePROGRAF iPF765 User Manual

Banding in different colors occurs

Printhead characteristics gradually change through repeated
use, and colors may change.
Color may change slightly even on the same model of printer
if you use a different version of the firmware or printer driver,
or when you print under different settings or in a different
printing environment.
Banding in different colors occurs
Banding in different colors occurs
The paper feed amount is out of adjustment.
Printing does not proceed smoothly because
print jobs are interrupted during transmission.
In the Control Panel menu, Adj. Priority is
set to Print Length.
The Printhead is out of alignment.
The Printhead nozzles are clogged.
Streaks may occur if you set the Print Quali-
ty too low.
The type of paper specified in the printer driv-
er does not match the type loaded in the
printer.

Colors in printed images are uneven

Colors in printed images are uneven
Line Drawing/Text is selected when print-
ing 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
668
light image areas.
Cause
Cause
Adjust the feed amount.
(See "Adjusting the Feed Amount.")
Exit other applications and cancel other print jobs.
Setting Adj. Priority to Print Quality in the Control Panel menu and adjusting the feed amount
may improve results.
(See "Adjusting the Feed Amount.")
Adjust the Printhead alignment.
(See "Automatic Adjustment to Straighten Lines and Colors (Head Posi. Adj.).")
Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.")
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 or High
modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Printing.")
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.
Cause
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 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 (VacuumStrngth).")
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.
Corrective Action
(See "Manual Adjustment to Straighten Lines and Colors (Head Posi. Adj.).")
→P.605
Follow these steps to prepare the printing environment.
1.
Use the same version of firmware or printer driver.
2.
Specify the same value for all settings items.
Corrective Action
→P.611
→P.611
→P.627
→P.446
→P.465
Corrective Action
iPF765
→P.604
→P.63
→P.617
→P.63
User's Guide