When Normal Cleaning Is Not Effective; Medium Cleaning - Roland Soljet EJ-640 User Manual

When Normal Cleaning Is Not Effective

"Medium" and "powerful" cleaning consume more ink than "normal cleaning," and overly frequent use
may damage the print heads themselves. Avoid using these cleaning methods more than necessary.

Medium Cleaning

When problems such as dot drop-out are not resolved by normal cleaning (P. 40, "Printing Tests and Normal
Cleaning"), perform the more forceful "medium cleaning" to remove clogging from the print heads.
Procedure

Perform a printing test.
3
 P. 40, "Printing Tests and Normal Cleaning"
When the printing test is complete, remove the media.

Press

CLEANING
MEDIUM CL.

Check for the group with dot drop-out by viewing the printing-test results.
With medium cleaning, only the group of print heads having dot drop-out is cleaned.
Printing-test results

MEDIUM CL.
56
.
Press
Press
Group A
Dot drop-out
Press
AB
heads that is not to be cleaned.
Press
Repeat this process to display only the group of print
heads that requires cleaning.
The only groups that can be cleaned are those that are displayed as
A or B.
to display the screen shown on the left.
.
If the printing-test results are difficult
to interpret
Examine the results from different angles
in a well-lit location. Take advantage of
reflected light to enable visual checking.
or to select the group of print
or to get rid of the group display.
Group B