Partially Restricting The Print Heads Used For Printing - Roland VersaUV LEC2-300 User Manual

Handling Severe Dot Drop-out, Dot Displacement, and Uneven Colors

Partially Restricting the Print Heads Used for Printing

When dot drop-out or dot displacement is not improved even after replacing the ink, 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
Examine the results from different angles in a well-lit location. It is visible using the reflection of the light.
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3. Advanced Maintenance