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

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Card stock
Card stock is a rigid, stiff material that can have a wide variety of constructions. Orientation of paper fibers (grain direction),
moisture content, thickness, texture, and other properties can significantly impact printing, as can preprinting, perforation,
creasing, and other features common to forms. For example, preprinting introduces semi-liquid, volatile components that
must withstand the high temperatures used in laser printing. Perforation and creasing may cause nesting, or interlocking,
which can cause paper jams and double sheet feeds.
The following sections describe some of the basic characteristics of card stock. In general, we recommend a single-ply
construction of 100% chemically-pulped wood with a vellum finish. Before purchasing large quantities of card stock, make
sure you test samples of the print material in your printer.
Weight
The weight of card stock plays a significant role in the print quality and feed reliability of the stock. Confusion often arises
when specifying the
basis weight of a stock; see Basis weight on page 7 for more information. The basis weight is a term
used to describe the weight in pounds of 500 sheets of paper (one ream). Since the sheet size varies from one type of
stock to another, the basis weights are not always easily comparable. For example, an office supply store has 8.5 x 11 size
cover stock (80 lb Bristol) and 8.5 x 11 size card stock (90 lb Index) side by side on the shelf. Both papers are manufactured
by the same company, and a basis weight comparison indicates the card stock (90 lb Index) is heavier than the cover stock
(80 lb Bristol). In this example, the cover stock (80 lb Bristol) is actually heavier than the card stock (90 lb Index).
The reason the cover stock is heavier is because before the two types of paper were cut into 8.5 x 11 size pages, the card
stock was a larger sheet size than the sheet size of the cover stock. When the papers were cut during the manufacturing
process into 8.5 x 11 size pages, more reams (500 sheets) of paper were received from the card stock sheets than from the
cover stock sheets. This makes the weight of the cover stock heavier than the weight of the card stock.
It is easier to compare the cover stock metric weight (g/m
2
) against card stock metric weight (g/m
2
). If you look at the metric
weights of the two stocks in the previous example, it is immediately evident that 80 lb Bristol cover stock (176 g/m
2
) is
heavier than 90 lb Index card stock (163 g/m
2
).
Not all printers are able to print on cover stock. This is because cover stock is usually thicker and not able to make the turns
in the printer paper path. This causes paper jams and sometimes causes the paper to feed incorrectly. Also, when using a
laser printer, toner is pulled onto the paper through an electrical charge. If the paper is too thick, there may not be enough
voltage to pull the toner on the paper properly and can cause poor print quality.
To determine if your printer is able to print on cover stock, go to Printer specifications on page 22 , locate your printer, and
review the supported paper type information. You can also view the supported media in the printer User’s Guide .