Printer Adjustments
Cleaning
Wipe off any foreign matter such as media dust, dirt and adhesive substances built up around the printhead and platen with the head cleaning pen (head cleaner) provided, and use a soft cloth soaked in ethyl alcohol for the platen etc.
It is particularly important to clean the thermal printhead after printing on thermal media for long periods, which will guarantee the print quality and extend the life of the thermal printhead.
Note: Always use the head cleaner when cleaning the thermal printhead.
Thermal printhead
Head cleaner 
To clean the entire surface of the platen, rotate the platen little by little with your thumb using a cheese cloth. Do not touch the platen with your bare hands.
Ribbon guide roller
Guide shaft
Platen
Caution
Do not use any solvent other than ethyl alcohol. Solvents such as benzene, acetone and thinner will dissolve plastic parts and destroy the thermal printhead, platen and much of the printer!
Try to avoid using "excessive amounts" of ethyl alcohol to clean the platen. Excessive use will harden the platen surface prematurely.
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