OPERATION
3-54 25257 Issue 3 November 2013
In such situations the electrical contacts sending firing pulses to the cartridge
from the controller are being impeded by some kind of contamination.
To clean: Remove the cartridge from the print head. Clean the gold contact
foil with a gentle wipe across the contacts with a lint free tissue and then clean
the contacts on the print head. Rub with gentle pressure using a fresh lint-free
tissue until any contamination has been removed.
Storage of cartridges
Interruptions to the printing cycle can affect the print quality. After
prolonged periods of inactivity ink will begin to evaporate and cure on the
nozzle plate and in the nozzle chamber. This blocks the chamber and can
either restrict the firing of the ink drops or cause them to deviate from their
correct course.
Each type of ink, aqueous and ethanol based, have different D-Cap times:
For aqueous inks with short periods of inactivity, typically breaks in the
printing cycle for less than 2 hours, no measures are required and the cartridge
can remain in the print head.
For ethanol inks the D-Cap time can vary depending on the ink being used;
typically they will require capping for between 10 to 60 minutes of inactivity
during the printing cycle. For a perfect first print, wipe the nozzle face with a
dry, lint-free tissue before starting operations again and/or print a couple of
test messages. Purge settings can also be written into the operations, which
would lessen the need for wiping.
For both types of ink, for periods of inactivity longer than stated above, the
cartridge should be removed and the cap placed on the nozzles to stop the ink
from drying.
When starting operations for the first time after an extended break, wipe the
nozzle face and print a couple of test prints before resuming.
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