Canon imagePROGRAF iPF785 User Guide - Page 639

Problems with the printing quality, Printing is faint, Paper rubs against the Printhead

Page 639 highlights

iPF785 Printing is faint Problems with the printing quality Printing is faint ...639 Paper rubs against the Printhead ...639 The edges of the paper are dirty ...640 The surface of the paper is dirty ...641 The back side of the paper is dirty ...641 Printed colors are inaccurate ...641 Banding in different colors occurs ...642 Colors in printed images are uneven ...642 Image edges are blurred or white banding occurs 643 The contrast becomes uneven during printing ...643 The length of printed images is inaccurate in the feeding direction 644 Images are printed crooked ...644 Documents are printed in monochrome ...644 Line thickness is not uniform ...644 Lines are misaligned ...645 Troubleshooting Problems with the printing quality 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. Print on the printing surface. Corrective Action Print a test pattern to check the nozzles and see if they are clogged. (See "Checking for Nozzle Clogging.") ➔P.597 After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Panel. (See "Cleaning the Printhead.") ➔P.598 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.627 (See "Clearing a Jammed Sheet.") ➔P.630 3. Close 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 driver is set to Standard or Fast. You are printing on paper that tends to generate dust when cut. Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime. (See "Menu Settings.") ➔P.457 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.58 In the Control Panel menu, set CutDustReduct. in Paper Details to On. (See "Reducing Dust from Cutting Rolls.") ➔P.393 Paper rubs against the Printhead Cause Corrective Action 639 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.375 (See "Loading Sheets in the Printer.") ➔P.394 User's Guide

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Problems with the printing quality
Problems with the printing quality
Printing is faint
........................................................................................................................................................................
639
Paper rubs against the Printhead
...................................................................................................................................
639
The edges of the paper are dirty
....................................................................................................................................
640
The surface of the paper is dirty
....................................................................................................................................
641
The back side of the paper is dirty
................................................................................................................................
641
Printed colors are inaccurate
............................................................................................................................................
641
Banding in
different
colors occurs
.................................................................................................................................
642
Colors in printed images are uneven
.............................................................................................................................
642
Image edges are blurred or white banding occurs
..................................................................................................
643
The contrast becomes uneven during printing
.........................................................................................................
643
The length of printed images is inaccurate in the feeding direction
...............................................................
644
Images are printed crooked
...............................................................................................................................................
644
Documents are printed in monochrome
......................................................................................................................
644
Line thickness is not uniform
............................................................................................................................................
644
Lines are misaligned
..............................................................................................................................................................
645
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.597
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
Panel.
(See "Cleaning the Printhead.")
P.598
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.627
(See "Clearing a Jammed Sheet.")
P.630
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.457
Printing may be faint if
Print Quality
in
Advanced Settings
in the printer driv-
er 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.58
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.393
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.375
(See "Loading Sheets in the Printer.")
P.394
iPF785
Printing is faint
User's Guide
Troubleshooting
Problems with the printing quality
639