Oki C 130n - Manual (Page 71)

71 - C130n User’s Guide
Media Storage
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Keep media on a flat, level surface in its original wrapper until it is time to
load it.
Media that has been stored for a long time out of its packaging may dry up
too much and cause misfeeding.
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If media has been removed from its wrapper, place it in its original
packaging and store in a cool, dark place on a level surface.
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Avoid moisture, excessive humidity, direct sunlight, excessive heat (above
35°C [95°F]), and dust.
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Avoid media leaning against other objects or placing it in an upright
position.
Before using stored media, do a trial print and check print quality.