Canon imagePROGRAF iPF765 MFP M40 - Manual (Page 665)

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