Problems with the printing quality, Printing is faint, Paper rubs against the printhead – Canon imagePROGRAF iPF765 MFP M40 User Manual

Page 665: Printing is faint paper rubs against the printhead, See "paper rubs against the printhead."), P.665

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Problems with the printing quality

Problems with the printing quality

Printing is faint .................................................................................................................................................... 665

Paper rubs against the Printhead ...................................................................................................................... 665

The edges of the paper are dirty ....................................................................................................................... 666

The surface of the paper is dirty ........................................................................................................................ 667

The back side of the paper is dirty .................................................................................................................... 667
Printed colors are inaccurate ............................................................................................................................. 667

Banding in different colors occurs ..................................................................................................................... 668

Colors in printed images are uneven ................................................................................................................. 668

Image edges are blurred or white banding occurs ........................................................................................... 669

The contrast becomes uneven during printing .................................................................................................. 669
The length of printed images is inaccurate in the feeding direction .................................................................. 670

Images are printed crooked ............................................................................................................................... 670

Documents are printed in monochrome ............................................................................................................ 670
Line thickness is not uniform .............................................................................................................................. 670

Lines are misaligned .......................................................................................................................................... 671

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 clogged.

Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.")

→P.627

Because the printer was left without ink
tanks installed for some time, ink has be-
come clogged in the ink supply system.

After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Pan-
el.
(See "Cleaning the Printhead.")

→P.628

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.656

(See "Clearing a Jammed Sheet.")

→P.659

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.500

Printing may be faint if Print Quality in Ad-
vanced Settings
in the printer driver is set
to Standard 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.63

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.464

Paper rubs against the Printhead

Paper rubs against the Printhead

Cause

Corrective Action

The type of paper specified in the printer
driver does not match the type loaded in
the printer.

Load paper of the same type as you have specified in the printer driver.
(See "Loading Rolls in the Printer.")

→P.446

(See "Loading Sheets in the Printer.")

→P.465

Make sure the same type of paper is specified in the printer driver as you have loaded in the print-
er.

iPF765

Printing is faint

User's Guide

Troubleshooting

Problems with the printing quality

665

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