Markem Imaje SmartDate X40 Instruction Manual page 23

Printhead maintenance
The printhead should be cleaned at regular intervals.
These depend on machine use, operating environment,
and choice of thermal ribbon.
Turn off the power to the controller and remove the ribbon
cassette.
Allow the printhead to cool to normal room temperature
before proceeding in order to prevent the possibility of
thermal shock damage.
Use a cotton swab or a soft cloth soaked in Isopropanol
solvent to remove any residue from the printhead. Take
care not to use excessive amounts of solvent.
The print line is located on the bevelled edge of the
printhead.
Instruction manual
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