Canon imagePROGRAF GP-4000 User Manual
Page 764
Check 3
Is the Print head position adjusted correctly?
Adjust the Print head position.
Automatic Adjustment to Straighten Lines and Colors
Check 4
Is the feed amount adjusted correctly?
Adjust feed amount.
Check 5
Colors in printed images may be uneven if the
Print Quality
setting is too low
If using Windows, select
Advanced Settings
from the
Main
tab of the printer driver, and then select a higher
Print Quality
setting.
If using macOS, select
Quality & Media
in the printer driver, and then select a higher
Print Quality
setting.
Changing the Print Quality and Correcting Image Data
Changing the Print Quality and Correcting Image Data (macOS)
Check 6
Colors in printed images may be uneven on the boundary between shades if
there are dark and light areas in an image
Prints on the same page while switching between Bidirectional printing and Unidirectional printing. Therefore,
color unevenness may occur when switching. Using the unidirectional printing function may reduce color
unevenness in this situation.
Follow the steps below for unidirectional printing.
• Windows
•
Open
Paper Detailed Settings
from the
Main
tab of the printer driver, and then select
Unidirectional
Printing
.
• macOS
•
Open
Advanced Paper Settings
in the printer driver, and then select
Unidirectional Printing
.
Check 7
If printing borderless, colors in printed images may be a little uneven at the
leading edge of the paper because printing is interrupted to cut the paper
Set the printer driver
Automatic Cutting
settings to
No
, and then print. Doing this prints only the left and right
sides borderless. Cut the top and bottom borders with a cutting implement such as scissors after the printed
materials are output and cut.
Note
• Selecting a higher
Print Quality
in the printer driver
Advanced Settings
may resolve the problem.
•
Changing the Print Quality and Correcting Image Data
Changing the Print Quality and Correcting Image Data (macOS)
Check 8
Does this paper curl easily?
Colors in printed images may be uneven at the leading edge of paper that curls easily. Change the
Transport
unit vacuum strength
in the touch screen to increase the grip on the paper, or set a margin of at least 0.8
inches (20 mm) at the front edge of the paper.
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