Checking for nozzle clogging – Canon imagePROGRAF GP-4000 User Manual
Page 377
Checking for Nozzle Clogging
If printing is faint or affected by banding in different colors, make sure the print head nozzles are clear by
printing a test pattern to check the nozzles.
Note
• By default, nozzles are checked at fixed intervals.
•
Paper to Prepare
When using rolls
An unused roll at least 10.00 in. (254.0 mm) wide
When using sheets
One sheet of unused paper of at least A4/Letter size
1.
Load paper.
1.
Loading the Upper Roll on the Printer
Loading the Lower Roll on the Roll Unit (Option)
Loading Sheets in the Printer
2.
Tap
Maintenance
on HOME screen.
2.
The
Maintenance
screen appears.
3.
Tap
Nozzle Check
.
3.
A confirmation message appears.
4.
Tap
Yes
.
4.
The printer now prints a test pattern for checking the nozzles.
5.
Check the printing results.
5.
If the horizontal lines are not faint or incomplete, the nozzles are clear.
If some sections of the horizontal lines are faint or incomplete, the nozzles for those colors are clogged.
If horizontal lines are faint or incomplete, execute print head cleaning.
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