Print Head Cleaning - Epson TM-L90 Technical Reference Manual

7.1.2 Print Head Cleaning

CAUTION:
The print head is very hot right after printing and is very dangerous. Be sure to allow the
print head to cool down (after printing) before cleaning it. Also, be sure to turn off the
printer power before cleaning the print head.
Paper dust on the heating elements may lower the print quality. In this case, clean the print head
as follows.
1. Turn off the power.
2. Open the roll paper cover.
3. Clean the thermal elements of the print head using a cotton swab moistened with alcohol
solvent (ethanol or isopropyl alcohol).
CAUTION:
Do not touch the print head thermal elements with your bare hands. Doing so may have
a bad effect on the head thermal elements due to the adhesion of dirt.
Be careful not to scratch the print head when cleaning it.
4. Install roll paper and close the roll paper cover.
For the method of inserting the roll paper, refer to "Paper Loading Method" on page 55.
5. Close the roll paper cover.
Note:
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.
Epson recommends cleaning of the thermal head periodically (generally every three months) to maintain
receipt print quality.
Keep pieces of metal away from contact with the head thermal elements and driver IC as they are extremely
susceptible to damage.
If thermal paper contains Na, K, CI or other ions, be sure to use the specified paper as ions may adversely
affect the head thermal elements.
TM-L90/TM-L90 Peeler Model Technical Reference Guide
Print Head
Handling 109