Pentax PocketJet 3 - Manual (Page 60)

FIGURE 18. Cleaning the platen roller.
CAUTION: Do not attempt to clean the platen roller with any
material other than the cleaning cloth.
The cleaning cloth is for head cleaning and platen
roller cleaning only. Do not use it to clean any other
part of the printer.
NOTE: Don’t throw the cleaning cloth away after you clean
the platen roller. It should last for the life of the
printer. Keep the cleaning cloth with your printer
supplies and use it whenever you need to clean the
platen roller or the print head.
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