Olympus P-11 Manuel D'utilisation page 36

About the print pack (ink ribbon cartridge and paper)
Storage Considerations
Do not store the print pack in the following locations.
Do not store the print pack in a place subject to high temperature
(above 30°C/86°F), low temperature (below 5°C/41°F), high
humidity, or excessive dust.
Do not store the print pack with chemicals.
Do not store the print pack where exposed to direct sunlight or
bright light.
Note
Do not leave the print pack for long periods in an environment exceeding
4°F
40°C/10
to direct sunlight). The same applies to when the print pack is installed in
the printer.
Storing prints
Do not store the prints with the printed surfaces facing each other.
Do not allow the print surface to be in contact with cellophane tape, a
desk pad or an eraser containing plastic for an extended period of
time. Prolonged contact may cause the print surface to become
discolored.
Do not allow organic solvents to come in contact with the print
surface. Such contact may cause discoloration.
Avoid prolonged exposure of the print surface to sunlight or bright
light. Prolonged exposure may cause the print surface to become
discolored.
Use an oil-based pen when writing on the print surface.
Avoid locations that are subject to direct sunlight, high temperature/
humidity, or are in the reach of children.
Olympus is not responsible for print discoloration or fading.
If you experience problems
Olympus will replace each defective product with a new one if the
defect was caused by a problem during manufacture. Olympus
assumes no liability for any defects not related to manufacturing.
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(such as in a car or on a window ledge where it will be exposed