User Guide 13Paper and Print MediaPaper and Print MediaPaper tips Only use the supported paper types, sizes, and weights. Do not use perforated paper. Store the paper on a flat surface, in a relatively low-humidityenvironment. Avoid storing paper in such a way as to cause wrinkling, bending,curling, etc. Do not unwrap paper until you are ready to use it, and rewrap anypaper you are not using. Do not expose paper to direct sunlight. Do not expose paper to high humidity, since moisture can affectfeed reliability. Handle transparencies by the edges and with both hands to avoidfingerprints and creases, which can result in poor print quality. Always use the manual-feed slot for envelopes.Supported mediaRefer to the following table for the supported paper and media types,sizes, and weights and the correct trays to load that media. You canalso print the Paper Tips Page from the printerís front panel, whichlists the supported paper types and sizes.NoteUse 20-28 lb. (75-105 g/m 2 ) premium bond laser paper foroptimum performance and reliability. Media types at theextremes of the range of supported media may not perform asreliably.