HP 4550 Service Manual - Page 30

Media requirements CAUTION Selecting print media You can use many types of paper and other print media with this printer. This section provides guidelines and specifications for selecting and using different print media. Before purchasing any media or specialized forms in quantity, verify that your paper supplier obtains and understands the print media requirements specified in the HP LaserJet Family Print Media Guide. The guide is available through HP Direct. See the online user guide for ordering information. It is possible that media could meet all of the guidelines in this chapter and still not print satisfactorily. This may be a result of abnormal characteristics of the printing environment or to other variables over which Hewlett-Packard has no control (for example, extremes in temperature and humidity). Hewlett-Packard recommends testing any media before buying it in large quantities. Using media that does not conform to the specifications listed here and in the HP LaserJet Family Print Media Guide can cause problems that require service. This service is not covered by the Hewlett-Packard warranty or service agreements. Media specifications For optimum results, use conventional 75 g/m2 (20 lb) xerographic paper. Verify that the paper is of good quality and is free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, curls, or bent edges. Avoid fanning the print media before loading it into the paper trays. 28 Printer description C7085-90921