1.   Some print media, although they conform to size and weight       specifications, may still function poorly in your printer. Print quality, jam
      rates, and output stacking can be affected by the printing environment
      (temperature and humidity) and other characteristics of the paper itself
      (for example, structure, moisture content, smoothness, or thickness). IBM
      recommends you test small amounts of print media using your printing
      application in your current operating environment before you purchase
      large quantities of the media or you print large volumes.
      For more information about paper specifications see IBM Page Printers
      Paper Reference Booklet, G544-3178, or IBM Advanced Function Printer
      Cut Sheet Paper Reference for Use with IBM Electrophotographic Printers,
      G544-3915.
2.   The friction-feed design of the printer may cause skew and       slight-registration variations in the print position on the page, especially
      when you use small size papers or preprinted forms. IBM recommends
      you test small amounts of print media using your printing application in
      your current operating environment before you purchase large quantities
      of the media or you print large volumes.
3.   Using media outside of the media specifications and selection guidelines       may cause problems requiring service and shorten the life of supplies.
      Such problems are not covered by the IBM warranty or service agreement.
4.   IBM neither warrants nor recommends the use of any particular brand of       print media. Media properties are subject to change by the manufacturer,
      and IBM has no control over these changes. It is possible that paper will
      meet all of the specifications and guidelines, but still not print
      satisfactorily. This might be due to improper handling or storage, over
      which IBM has no control.
5.   Do not use the following types of paper and printable material in your       printer:
      v  Multipart forms
      v  Stapled, folded, or wrinkled paper
      v  Smooth or coated paper
6.   Some recycled papers release paper dust that can accumulate and cause       frequent paper jams and reduced supplies life.
7.   High humidity can damage paper. Try to store paper where it is cool and       dry.
8.   Envelopes, card stock, labels, and transparencies are simplex only.
9.   You may print custom paper sizes, but some small sizes may jam or register improperly. Media Size Specifications The following table lists supported media sizes and compatible input trays. 32    Infoprint 21: User’s Guide