Cleaning The Thermal Head - Epson TM-L90-i Technical Reference Manual

Cleaning the Thermal Head

Epson recommends cleaning the thermal head periodically (generally every 3 months) to
maintain receipt print quality.
 After printing, the thermal head can be very hot. Do not touch it and let it cool
 Do not damage the thermal head by touching it with your fingers or any hard
CAUTION
Turn off the printer, open the roll paper cover, and clean the thermal elements of the thermal
head with a cotton swab moistened with an alcohol solvent (ethanol or IPA).
Depending on the roll paper used, paper dust may stick to the platen roller and roll paper end
sensor. To remove the paper dust, clean the platen roller and roll paper end sensor with a cotton
swab moistened with water. Turn on the printer power only after the water has completely
dried.
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before you clean it.
object.
Thermal head