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Problems With The Printing Quality; Printing Is Faint - Canon IPF8400S Basic Manual

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Problems with the printing quality

Printing is faint .............................................................................................................................................. 113
Paper rubs against the printhead ................................................................................................................. 114
The edges of the paper are dirty .................................................................................................................. 115
The surface of the paper is dirty ................................................................................................................... 115
The back side of the paper is dirty ................................................................................................................ 116
Printed colors are inaccurate ........................................................................................................................ 116
Banding in different colors occurs ................................................................................................................ 117
Colors in printed images are uneven ............................................................................................................ 118
Image edges are blurred or white banding occurs ........................................................................................ 119
Setting the Blue Switch on the Platen ................................................................................................ 119
The contrast becomes uneven during printing ............................................................................................. 122
The length of printed images is inaccurate in the feeding direction .............................................................. 122
Images are printed crooked .......................................................................................................................... 123
Documents are printed in monochrome ....................................................................................................... 123
Line thickness is not uniform ........................................................................................................................ 123
Lines or colors are misaligned ...................................................................................................................... 124
Borders appear in borderless printing .......................................................................................................... 124

Printing is faint

Cause
You may be printing on the
wrong side of the paper.
The Printhead nozzles are
clogged.
Because the printer was left
without ink tanks installed
for some time, ink has
become clogged in the ink
supply system.
Paper is jammed inside the
Top Cover.
The ink was not dry when
paper was cut.
Printing may be faint if Print
Quality in Advanced
Settings in the printer
Print on the printing surface.
Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.")➔User's Guide
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.")➔User's Guide
After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control
Panel.
(See "Cleaning the Printhead.")➔P.58
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.102
(See "Clearing a Jammed Sheet.")➔P.105
3. Close the Top Cover.
Specify a longer drying period in the Control Panel menu, in Paper Details > Roll
DryingTime.
(See "Menu Settings.")➔User's Guide
In Advanced Settings of the printer driver, choose Highest quality or High in Print
Quality.
Printing in Fast or Standard mode is faster and consumes less ink than in Highest quality
Corrective Action
iPF8400S Basic Guide
113

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