HP LaserJet 9040/9050 Service Manual - Page 35

Media specifications Note Note Note Hint Use the following information to help the user select and use print media. Before purchasing large quantities of print media, make sure that it meets the requirements that are specified in this service manual and in the HP LaserJet Printer Family Print Media Guide. See "Media input/output options" on page 25. Always test print media before buying large quantities. Hewlett-Packard neither warrants nor recommends the use of a particular brand of paper or print media. Media properties are subject to manufacturing changes, and HP has no control over such changes. Although testing media helps to characterize the manufacturer's performance and process quality, the customer assumes all responsibility for the quality and performance of media. Guidelines for selecting print media For best results, use conventional 75-g/m2 (20-lb) paper. Make sure that the paper is of good quality, and free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, voids, and curled or bent edges. Some print media might meet all of the guidelines in this manual and still not produce satisfactory results. This might be the result of improper handling, unacceptable temperature and humidity levels, or other variables over which HP has no control. If you are unsure what type of paper you are loading (such as bond or recycled), check the label on the package of paper. For information about measuring caliper, see "Media input/output options" on page 25. Do not purchase more media than can be easily used in a short time (about 3 months). Media that is stored for long periods experiences heat and moisture extremes that can be damaging. Planning is important to prevent damage to a large supply of media. Special media specifications The following sections describe specifications for special media that can be used in these printers. Envelope specifications Successful printing on envelopes depends upon the quality of the envelopes. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. When selecting envelopes, consider the following components: z Construction-Prior to printing, envelopes should lie flat with less than 10 mm (0.39 inch) curl, and have well-constructed seams. z Condition-Envelopes should not be wrinkled, nicked, or otherwise damaged. z Temperature-Envelopes should be compatible with the heat and pressure produced by the printer. Media specifications 19