Инструкция для Canon imagePROGRAF iPF850 MFP M40

Canon

Problems with the printing quality

Problems with the printing quality

Printing is faint ............................................................................................................................................... 126

Paper rubs against the Printhead .................................................................................................................. 127

The edges of the paper are dirty .................................................................................................................... 127

The surface of the paper is dirty .................................................................................................................... 128

The back side of the paper is dirty ................................................................................................................. 128

Printed colors are inaccurate ......................................................................................................................... 129

Banding in different colors occurs ................................................................................................................. 129

Colors in printed images are uneven .............................................................................................................. 130

Image edges are blurred or white banding occurs ......................................................................................... 130

The contrast becomes uneven during printing ............................................................................................... 131

The length of printed images is inaccurate in the feeding direction ................................................................. 131

Images are printed crooked ........................................................................................................................... 131

Documents are printed in monochrome ........................................................................................................ 132

Line thickness is not uniform ......................................................................................................................... 132

Lines are misaligned ...................................................................................................................................... 132

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.")

➔

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 Warn-
ing 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

Because the printer was left
without ink tanks installed for
some time, ink has become
clogged in the ink supply sys-
tem.

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

(See "Cleaning the Printhead.")

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.")

(See "Clearing a Jammed Sheet.")

3.

Close the Top Cover.

The ink was not dry when pa-
per was cut.

Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime.

(See "Menu Settings.")

➔

User's Guide

Printing may be faint if Print
Quality in Advanced 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.")

➔

User's Guide

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.")

➔

User's Guide

Printing is faint

iPF850 Series

Troubleshooting

Problems with the printing quality

126