Sony Ericsson UP-DR100 Mode D'emploi page 50

To clean the thermal head:
Clean the thermal head heating elements, IC cover and
ribbon guide gently with a soft cloth.
Thermal head heating elements
Ribbon guide
If white stripes or scratches appears on the
printout:
When you make printouts using the UPC-R46 self-
laminating color printing pack, after you have used
several rolls of the UPC-R35/UPC-R57 self-laminating
color printing pack, the printout quality may deteriorate,
for example, white stripes or scratches may appear on
the printout.
In such a case, clean the thermal head gently with a soft
cloth moistened with alcohol.
Clean both ends of the thermal head gently
with a soft cloth moistened with alcohol.
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Precautions
To clean the platen roller:
Clean the platen roller gently with a soft cloth moistened
with alcohol.
IC cover
To clean the pinch roller:
Clean the pinch roller gently with a soft cloth moistened
with alcohol while turning the pinch roller.
Clean the platen roller gently with a soft cloth
moistened with alcohol while turning the platen roller.
Pinch roller