Canon IPF670 - Problems with the Printing Quality; Printing Is Faint

Problems with the printing quality
Problems with the printing quality
Printing is faint ...................................................................................................................................................... 590
Paper rubs against the Printhead .......................................................................................................................... 591
The edges of the paper are dirty ........................................................................................................................... 591
The surface of the paper is dirty ........................................................................................................................... 592
The back side of the paper is dirty ........................................................................................................................ 592
Printed colors are inaccurate ................................................................................................................................ 593
Banding in different colors occurs ......................................................................................................................... 593
Colors in printed images are uneven ..................................................................................................................... 594
Image edges are blurred or white banding occurs ................................................................................................ 594
The contrast becomes uneven during printing ...................................................................................................... 595
The length of printed images is inaccurate in the feeding direction ........................................................................ 595
Images are printed crooked .................................................................................................................................. 595
Documents are printed in monochrome ................................................................................................................ 595
Line thickness is not uniform ................................................................................................................................ 596
Lines are misaligned ............................................................................................................................................. 596
Printing is faint
Printing is faint
Cause Corrective Action
You may be printing on the wrong
side of the paper.
Print on the printing surface.
The Printhead nozzles are clog-
ged.
Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.") ➔P.549
To check for nozzles after printing, set Frequency in Nozzle Check in the Control Panel menu to a
setting other than Off.
Furthermore, to have a warning displayed depending on the result of the nozzle check, set Warning
in Nozzle Check in the Control Panel menu to On.
Note that when Warning is set to On, printing may stop depending on the content of the warning.
(See "Menu Settings.") ➔P.458
Because the printer was left with-
out ink tanks installed for some
time, ink has become clogged in
the ink supply system.
After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Panel.
(See "Cleaning the Printhead.") ➔P.550
Paper is jammed inside the Top
Cover.
Follow the steps below to remove the jammed piece of paper inside the Top Cover.
1. Open the Top Cover and make sure the Carriage is not over the Platen.
2. Remove any scraps of paper inside the Top Cover.
(See "Clearing Jammed Roll Paper.") ➔P.577
(See "Clearing a Jammed Sheet.") ➔P.580
3. Close the Top Cover.
The ink was not dry when paper
was cut.
Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime.
(See "Menu Settings.") ➔P.458
Printing may be faint if Print
Quality in Advanced Settings in
the printer driver is set to Stand-
ard or Fast.
In Advanced Settings of the printer driver, choose Highest or High in Print Quality.
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.") ➔P.56
You are printing on paper that
tends to generate dust when cut.
In the Control Panel menu, set CutDustReduct. in Paper Details to On.
(See "Reducing Dust from Cutting Rolls.") ➔ P.374
Printing is faint iPF670
User's Guide
Troubleshooting Problems with the printing quality
590