Canon imagePROGRAF iPF780 Basic Guide Page 96
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- Table of contents
- TROUBLESHOOTING
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Problems with the printing quality
Problems with the printing quality
Printing is faint ................................................................................................................................................................. 96
Paper rubs against the Printhead ............................................................................................................................ 96
The edges of the paper are dirty ............................................................................................................................ 97
The surface of the paper is dirty ............................................................................................................................. 98
The back side of the paper is dirty ......................................................................................................................... 98
Printed colors are inaccurate .................................................................................................................................... 98
Banding in different colors occurs ......................................................................................................................... 99
Colors in printed images are uneven ..................................................................................................................... 99
Image edges are blurred or white banding occurs ........................................................................................ 100
The contrast becomes uneven during printing ............................................................................................... 100
The length of printed images is inaccurate in the feeding direction ..................................................... 101
Images are printed crooked ..................................................................................................................................... 101
Documents are printed in monochrome ............................................................................................................ 101
Line thickness is not uniform .................................................................................................................................. 101
Lines are misaligned .................................................................................................................................................... 102
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
Because the printer was left without
ink tanks installed for some time, ink
has become clogged in the ink sup-
ply system.
After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control
Panel.
(See "Cleaning the Printhead.") ➔ P.44
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.84
(See "Clearing a Jammed Sheet.") ➔ P.87
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 Drying-
Time.
(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
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.15
(See "Loading Sheets in the Printer.") ➔ P.21
Make sure the same type of paper is specified in the printer driver as you have loaded in the
printer.
1.
Press the Stop button and stop printing.
Printing is faint
iPF780 Series
Basic Guide
Troubleshooting Problems with the printing quality
96
- Large Format Printer 1
- Safety Precautions 2
- In an Emergency 3
- Cleaning the Printer 3
- Pacemakers 3
- Moving the Printer 3
- FCC Regulations (U.S.A) 4
- For CA, USA Only 5
- Trademarks 5
- Copyright 5
- Legal Notice 5
- Manuals for this printer 6
- About This User Manual 10
- Handling Paper 12
- No attachment 13
- Loading Rolls in the Printer 15
- Not prin 18
- Handling sheets 21
- Removing Sheets 23
- Consumables and Maintenance 25
- Remove the Ink Tank 26
- Installing Ink Tanks 27
- Important 28
- Replacing Ink Tanks 29
- Printheads 30
- Replace the Printhead 31
- Replacing the Printhead 33
- (See "Menu Set 36
- (See "Automatic Ad 36
- Maintenance Cartridge 37
- Cleaning Inside the Top Cover 43
- Cleaning the Printhead 44
- Printer Parts 46
- Control Panel 47
- Menu Operations 48
- Specifying menu items 49
- Specifying numerical values 49
- Executing menu commands 50
- Menu Structure 51
- Ink Menu 52
- Job Menu 52
- Set./Adj. Menu 53
- Printer parts 57
- (See "Stand.") 58
- Top Cover (Inside) 59
- Roll Cover (Inside) 60
- Carriage 60
- Left Side Right Side 61
- Ink Tank Cover (Inside) 61
- Printer Relocation 62
- Reinstalling the Printer 65
- Install the printer 66
- Software Installation 69
- Installing the Software 71
- Print Preview 73
- 2. Access the Main pane 74
- Width to print rotated pages 75
- Large-Format Printing 77
- Adjusting the Printhead 79
- Adjusting the feed amount 81
- Method.") ➔P.81 82
- Adjusting Line Length 83
- Troubleshooting 84
- Clearing Jammed Roll Paper 85
- Clearing a Jammed Sheet 87
- Printing does not start 94
- Lines are misaligned 102
- Cannot print over a network 103
- Installation problems 104
- HP-GL/2 problems 106
- User's Guide 107
- Other problems 108
- Ink Level Detection 109
- Basic Guide 110
- Error Message 112
- Cause Corrective Action 120
- Messages regarding ink 121
- Cannot adjust paper feed 123
- Messages regarding printheads 124
- Execute printhead cleaning 125
- Messages regarding HP-GL/2 127
- Other Messages 128
- Error Message Other Messages 129
- Error Messages 130
- Error Message Error Messages 131
- © CANON INC. 2013 133
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