Canon imagePROGRAF iPF750 MFP M40 iPF750 User Manual Ver.1.40 - Page 807

Image edges are blurred or white banding occurs

Page 807 highlights

Troubleshooting > Problems with the printing quality > Cause You are printing on paper that curls easily. Corrective Action (See "Adjusting the Vacuum Strength (VacuumStrngth).") →P.636 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 Printing.") →P.60 Color may be uneven between dark Select Unidirectional Printing in the Advanced Settings of the printer driver. and light image areas. 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 Printing.") →P.60 The Printhead is out of alignment. Adjust the Printhead alignment. (See "Automatic Adjustment to Straighten Lines and Colors (Head Posi. Adj.).") →P.619 Allowing printed documents to dry on top of each other may cause uneven 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 Load paper of the same type as you have specified in the printer driver. printer driver does not match the (See "Loading Rolls in the Printer.") →P.579 type loaded in the printer. (See "Loading Sheets in the Printer.") →P.602 Make sure the same type of paper is specified in the printer driver as you have 11 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 Leading 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.") →P.673 791 Image edges are blurred or white banding occurs Cause The Platen suction is too strong. The Printhead is set too high in the Control Panel menu. Corrective Action In the Control Panel menu, set VacuumStrngth to Weakest. (See "Adjusting the Vacuum Strength (VacuumStrngth).") →P.636 In the Control Panel menu, set Head Height to Lowest. iPF750 Image edges are blurred or white banding occurs

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Cause
Corrective Action
You are printing on paper that curls
easily.
(See "
Adjusting the Vacuum Strength (VacuumStrngth)
.")
→P.636
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
.")
→P.60
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
.")
→P.60
The Printhead is out of alignment.
Adjust the Printhead alignment.
(See "
Automatic Adjustment to Straighten Lines and Colors (Head Posi.
Adj.)
.")
→P.619
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
.")
→P.579
(See "
Loading Sheets in the Printer
.")
→P.602
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
.")
→P.673
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)
.")
→P.636
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