Canon imagePROGRAF iPF770 User Guide - Page 540

The surface of the paper is dirty, The back side of the paper is dirty, Printed colors are

Page 540 highlights

The surface of the paper is dirty iPF770 Cause You are printing on heavyweight paper or paper that curls or wrinkles easily after absorbing ink. The Ejection Guide is soiled. Corrective Action For paper-based media such as Heavyweight Coated Paper, set the VacuumStrngth to Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting. (See "Adjusting the Vacuum Strength.") ➔P.493 (See "Troubleshooting Paper Abrasion and Blurry Images.") ➔P.485 For film-based media such as Tracing Paper, set the VacuumStrngth to Standard, Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting. (See "Adjusting the Vacuum Strength.") ➔P.493 (See "Troubleshooting Paper Abrasion and Blurry Images.") ➔P.485 Clean the Ejection Guide. (See "Cleaning the Printer Exterior.") ➔P.514 The surface of the paper is dirty Cause The Paper Retainer is soiled. You are using a paper that does not dry easily. Corrective Action Clean the Paper Retainer. (See "Cleaning Inside the Top Cover.") ➔P.514 In the Control Panel menu, set Roll DryingTime to at least 1 min. (See "Menu Settings.") ➔P.416 When paper that does not dry easily is used for printing, it may curl during printing and touch the Output Tray. In this case, in the Control Panel menu, complete the settings for Dry time and Area in Scan Wait Time. However, note that printing will now take longer. (See "Menu Settings.") ➔P.416 Troubleshooting Problems with the printing quality The back side of the paper is dirty Cause The Platen has become dirty after borderless printing or printing on small paper. The Platen has become soiled because you have set Width Detection to Off in the Control Panel menu. The Paper Retainer is soiled. BordlessOversize is set to Standard in the Control Panel menu. Corrective Action Open the Top Cover and clean the Platen. (See "Cleaning Inside the Top Cover.") ➔P.514 Set Width Detection to On in the Control Panel menu, and then open the Top Cover and clean the Platen. (See "Cleaning Inside the Top Cover.") ➔P.514 Open the Top Cover and clean the Platen. After this, manually advance the roll onto the Platen before printing. (See "Cleaning Inside the Top Cover.") ➔P.514 (See "Feeding Roll Paper Manually.") ➔P.330 Clean the Paper Retainer. (See "Cleaning Inside the Top Cover.") ➔P.514 Set BordlessOversize to Little in the Control Panel menu. (See "Menu Settings.") ➔P.416 Printed colors are inaccurate Cause Corrective Action 540 Color adjustment has not been activated in the Ad- In the Advanced Settings of the printer driver, access Color Settings in Col- vanced Settings of the printer driver. or Mode to adjust colors. (See "Main Sheet (Windows).") ➔P.148 (See "Main Pane (Mac OS).") ➔P.252 Colors have not been adjusted on the computer or monitor. Refer to the computer and monitor documentation to adjust the colors. Adjust the settings of the color management software, referring to the software documentation as needed. The Printhead nozzles are clogged. Print a test pattern to check the nozzles and see if they are clogged. User's Guide

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Cause
Corrective Action
You are printing on heavyweight paper
or paper that curls or wrinkles easily af-
ter absorbing ink.
For paper-based media such as Heavyweight Coated Paper, set the
VacuumStrngth
to
Strong
or
Strongest
in the Control Panel menu. If the paper still rubs against the print-
head, set the
Head Height
in the Control Panel menu to a higher value than the current
setting.
(See "Adjusting the Vacuum Strength.")
P.493
(See "Troubleshooting Paper Abrasion and Blurry Images.")
P.485
For film-based media such as Tracing Paper, set the
VacuumStrngth
to
Standard
,
Strong
or
Strongest
in the Control Panel menu. If the paper still rubs against the print-
head, set the
Head Height
in the Control Panel menu to a higher value than the current
setting.
(See "Adjusting the Vacuum Strength.")
P.493
(See "Troubleshooting Paper Abrasion and Blurry Images.")
P.485
The Ejection Guide is soiled.
Clean the Ejection Guide.
(See "Cleaning the Printer Exterior.")
P.514
The surface of the paper is dirty
The surface of the paper is dirty
Cause
Corrective Action
The Paper Retainer is soiled.
Clean the Paper Retainer.
(See "Cleaning Inside the Top Cover.")
P.514
You are using a paper that does
not dry easily.
In the Control Panel menu, set
Roll DryingTime
to at least
1 min.
(See "Menu Settings.")
P.416
When paper that does not dry easily is used for printing, it may curl during printing and touch the
Output Tray.
In this case, in the Control Panel menu, complete the settings for
Dry time
and
Area
in
Scan
Wait Time
.
However, note that printing will now take longer.
(See "Menu Settings.")
P.416
The back side of the paper is dirty
The back side of the paper is dirty
Cause
Corrective Action
The Platen has become dirty after borderless print-
ing or printing on small paper.
Open the Top Cover and clean the Platen.
(See "Cleaning Inside the Top Cover.")
P.514
The Platen has become soiled because you have
set
Width Detection
to
Off
in the Control Panel
menu.
Set
Width Detection
to
On
in the Control Panel menu, and then open the Top
Cover and clean the Platen.
(See "Cleaning Inside the Top Cover.")
P.514
Open the Top Cover and clean the Platen. After this, manually advance the
roll onto the Platen before printing.
(See "Cleaning Inside the Top Cover.")
P.514
(See "Feeding Roll Paper Manually.")
P.330
The Paper Retainer is soiled.
Clean the Paper Retainer.
(See "Cleaning Inside the Top Cover.")
P.514
BordlessOversize
is set to
Standard
in the Con-
trol Panel menu.
Set
BordlessOversize
to
Little
in the Control Panel menu.
(See "Menu Settings.")
P.416
Printed colors are inaccurate
Printed colors are inaccurate
Cause
Corrective Action
Color adjustment has not been activated in the
Ad-
vanced Settings
of the printer driver.
In the
Advanced Settings
of the printer driver, access
Color Settings
in
Col-
or Mode
to adjust colors.
(See "Main Sheet (Windows).")
P.148
(See "Main Pane (Mac OS).")
P.252
Colors have not been adjusted on the computer or
monitor.
Refer to the computer and monitor documentation to adjust the colors.
Adjust the settings of the color management software, referring to the software
documentation as needed.
The Printhead nozzles are clogged.
Print a test pattern to check the nozzles and see if they are clogged.
The surface of the paper is dirty
iPF770
User's Guide
Troubleshooting
Problems with the printing quality
540