Lexmark 22L0176 - C 770dn Color Laser Printer, Руководство пользователя

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Print material testing
registration card, information on the printer CD, or visit our Web site at www.lexmark.com\publications for technical
assistance contact numbers.
Design factors
Print materials all have measurable characteristics that you need to consider when selecting or designing forms for your
particular application.
Basis weight
Basis weight is a term used to describe the weight in pounds of 500 sheets of paper (one ream). However, the weight is
determined based on the standard size of the paper, which may not be the purchased size. For example, the standard size
of 20 lb Bond paper is 17 x 22 inches, and a ream of 17 x 22 inch 20 lb Bond paper weighs 20 lbs. If the 17 x 22 inch 20 lb
Bond paper was cut, creating four reams of 8.5 x 11 paper, each ream would be labeled 20 lb Bond paper but would only
weigh 5 lbs.
If the same paper weighed 24 pounds, it would be called 24 lb Bond. The 24 lb Bond paper is thicker, heavier, and more
dense than the 20 lb Bond. Thicker paper means less paper can be placed in a tray, and paper that is heavier and more
dense may cause paper jams or feed reliability problems in some printers. Check the printer media weight table located in
the printer
User’s Guide to verify that the paper basis weight being used is acceptable.
Not all basis weights are related to the same standard sheet size: for example; 70 lb material can be lighter than 40 lb
material if it is based on larger base size paper (see the
Card stock weights comparison guide on page 11 ). For a more
consistent way to compare weights, see the metric measurement of grams per square meter (g/m2). The metric
measurement of grams per square meter has been standardized by the International Organization for Standardization
(ISO).
Your printer can accept a wide range of stock weights, but materials either too light or too heavy can cause printing
problems. Heavy and/or thicker materials may not heat quickly enough in the fuser, resulting in poor print quality. They may
also feed less reliably or skew due to their weight or rigidity. Conversely, lighter materials can wrinkle and jam in the printer
due to low beam strength (stiffness).
Depending on the orientation of the stock as it feeds through the printer, you may need to request that heavier materials be
cut grain short or grain long to provide flexibility in paper path turns. See the specifications for each printer for more precise
recommendations.
Dimensions
All printers have print material dimension limitations. See the printer documentation shipped with your printer for details.
You can sometimes redesign forms to overcome these limitations. For example, if you use forms that are shorter than the
minimum length supported by your printer, you may be able to link two forms together when printing multiple forms. An
optional Universally Adjustable Tray designed for the Optra S, Optra T, and Lexmark T printer families prints on a range of
paper sizes including A6 and 3-inch by 5-inch index cards, 3-inch by 7-inch punch cards, and 4-inch by 6-inch postcards.
Environment
Lexmark printers meet or exceed all industry emission regulations and standards. Continuous printing on some papers or
other media may create fumes that are not a problem with occasional printing. Make sure your printer is located in a
well-ventilated area.
Temperature and humidity can have a major impact on printing. Even small changes (such as from day to night) can greatly
affect feed reliability if the print material is just within the range of acceptability.
We recommend that you condition stock while it is still in the original wrapper. To condition stock, store it in the same
environment as the printer for 24 to 48 hours before printing to let the stock stabilize at the new conditions. You may need
to extend this time several days if the storage or transportation environment is very different from the printer environment.
Thick stock may also require a longer conditioning period because of the mass of the material.