Problems With The Printing Quality; Printing Is Faint - Canon imagePROGRAF iPF770 User Manual

Printing is faint

Problems with the printing quality

Problems with the printing quality

Printing is faint ................................................................................................................................................ 538
Paper rubs against the Printhead .................................................................................................................... 539
The edges of the paper are dirty ..................................................................................................................... 539
The surface of the paper is dirty ..................................................................................................................... 540
The back side of the paper is dirty .................................................................................................................. 540
Printed colors are inaccurate .......................................................................................................................... 540
Banding in different colors occurs ................................................................................................................... 541
Colors in printed images are uneven ............................................................................................................... 541
Image edges are blurred or white banding occurs .......................................................................................... 542
The contrast becomes uneven during printing ................................................................................................ 542
The length of printed images is inaccurate in the feeding direction .................................................................. 543
Images are printed crooked ............................................................................................................................ 543
Documents are printed in monochrome .......................................................................................................... 543
Line thickness is not uniform .......................................................................................................................... 543
Lines are misaligned ....................................................................................................................................... 543
Printing is faint
Printing is faint
Cause
You may be printing on the
wrong side of the paper.
The Printhead nozzles are clog-
ged.
Because the printer was left
without ink tanks installed for
some time, ink has become
clogged in the ink supply sys-
tem.
Paper is jammed inside the Top
Cover.
The ink was not dry when paper
was cut.
Printing may be faint if Print
538
Quality in Advanced Settings
in the printer driver is set to
Standard or Fast.
You are printing on paper that
tends to generate dust when cut.
Print on the printing surface.
Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.")
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 warn-
ing.
(See "Menu Settings.")
P.416
➔
After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Pan-
el.
(See "Cleaning the Printhead.")
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.")
(See "Clearing a Jammed Sheet.")
3.
Close the Top Cover.
Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime.
(See "Menu Settings.")
P.416
➔
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.")
In the Control Panel menu, set CutDustReduct. in Paper Details to On.
(See "Reducing Dust from Cutting Rolls.")
Corrective Action
P.502
➔
P.503
➔
P.527
➔
P.530
➔
P.338
➔
iPF770
P.52
➔
User's Guide