Partially Restricting The Print Heads Used For Printing - Roland TrueVIS VG2-640 User Manual

Handling Severe Dot Drop-out and Dot Displacement

Partially Restricting the Print Heads Used for Printing

When dot drop-out or dot displacement is not improved even if super cleaning is performed, partially restrict the
print heads to use for printing (i.e. prevent the use of the print heads that are causing discharge issues). This
operation is called the "nozzle mask," and while it slows down printing speed, it also allows you to decrease the
impact of dot drop-out or dot displacement.
First print a test pattern, and then select the nozzle group to use by viewing the test results. After that, use Versa-
Works to select the nozzle group used for printing.
1.
Perform a printing test for the nozzle mask.
Procedure
1.
Load the media.
2.
Press [FUNCTION].
3.
Press [▼] once, and then press [▶] twice to display the screen shown below.
TEST PRINT
NOZZLE MASK
4.
Press [ENTER].
Printing of the test pattern starts.
5.
Check for the nozzle group with dot drop-out or dot displacement by viewing the results of the printing test.
"1" or "2" is the nozzle group. The following shows a dot drop-out in nozzle group 2.
MEMO
If the printing-test results are difficult to interpret
Check the results in a bright location, changing your line of vision. It is visible using the reflection of the light.
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3. Advanced Maintenance