Image edges are blurred or white banding occurs, P.791 – Canon imagePROGRAF iPF750 MFP M40 User Manual
Page 807
Cause
Corrective Action
You are printing on paper that curls
easily.
(See "Adjusting the Vacuum Strength (VacuumStrngth).")
Printed colors may be uneven if you
set the Print Quality too low.
Choose a higher level of Print Quality in the Advanced Settings of the printer
driver.
Printing in Draft 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 Print-
ing.")
Color may be uneven between dark
and light image areas.
Select Unidirectional Printing in the Advanced Settings of the printer driver.
When borderless printing is used,
the edge of the paper is cut during
printing. Thus, ink density may be
slightly uneven at the leading edges.
Specify No in Auto Cut in the printer driver before printing. In this case, the
paper can be printed without borders on the left and right sides only. Cut the
printed document ejected from the printer, and then use scissors or a cutting tool
to cut away the edges on the top and bottom.
Choose a higher level of Print Quality in the Advanced Settings of the printer
driver.
(See "Giving Priority to Particular Graphic Elements and Colors for Print-
ing.")
The Printhead is out of alignment.
Adjust the Printhead alignment.
(See "Automatic Adjustment to Straighten Lines and Colors (Head Posi.
Adj.).")
Allowing printed documents to dry
on top of each other may cause un-
even colors.
To avoid uneven colors, we recommend drying each sheet separately.
Density may be uneven if you use
Glossy Paper or Coated Paper.
In Advanced Settings of the printer driver, choose Highest or High in Print
Quality.
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.")
(See "Loading Sheets in the Printer.")
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.
2.
Change the type of paper in the printer driver and try printing again.
Scan Wait Time > Area in the
Control Panel menu is set to Lead-
ing edge.
When Scan Wait Time > Area is set to Leading edge, colors may be uneven
110–140 mm from the leading edge. (The position varies depending on the
Print Quality setting.)
In this case, select Scan Wait Time > Area > Entire area.
However, note that printing will now take longer.
(See "Menu Settings.")
Image edges are blurred or white banding occurs
Cause
Corrective Action
The Platen suction is too strong.
In the Control Panel menu, set VacuumStrngth to Weakest.
(See "Adjusting the Vacuum Strength (VacuumStrngth).")
The Printhead is set too high in the
Control Panel menu.
In the Control Panel menu, set Head Height to Lowest.
Troubleshooting
>
Problems with the printing quality
>
iPF750
Image edges are blurred or white banding occurs
11
791