Lexmark 279 manual Paper and specialty media guide, Paper guidelines, Paper characteristics

Paper and specialty media guide 41

Paper andspecialtymedia guide

Notes:

•Make sure the paper size, type, and weight are set correctly on the computer or control panel.

•Flex, fan, and straighten specialty media before loading them.

•The printer may print at a reduced speed to prevent damage to the fuser.

•For more information on card stock and labels, see the Card Stock & Label Guide on the Lexmark support Web site at http://support.lexmark.com.

Paper guidelines

Selecting the correct paper or specialty media reduces printing problems. For the best print quality, try a sample of the paper or specialty media before buying large quantities.

Paper characteristics

The following paper characteristics affect print quality and reliability. Consider these characteristics when evaluating new paper stock.

Weight

The printer trays can automatically feed paper weights up to 120‑g/m2 (32‑lb) bond grain long paper. The multipurpose feeder can automatically feed paper weights up to 163‑g/m2 (43‑lb) bond grain long paper. Paper lighter than

60 g/m2 (16 lb) might not be stiff enough to feed properly, causing jams. For best performance, use 75‑g/m2 (20‑lb) bond grain long paper. For paper smaller than 182 x 257 mm (7.2 x 10.1 inches), we recommended to use 90 g/m2 (24 lb) or heavier paper.

Note: Two‑sided printing is supported only for 60–90‑g/m2(16–24‑lb) bond paper.

Curl

Curl is the tendency for paper to curl at its edges. Excessive curl can cause paper feeding problems. Curl can occur after the paper passes through the printer, where it is exposed to high temperatures. Storing paper unwrapped in hot, humid, cold, or dry conditions, even in the trays, can contribute to paper curling prior to printing and can cause feeding problems.

Smoothness

Paper smoothness directly affects print quality. If paper is too rough, then toner cannot fuse to it properly. If paper is too smooth, then it can cause paper feeding or print quality issues. Always use paper between 100 and 300 Sheffield points; however, smoothness between 150 and 250 Sheffield points produces the best print quality.

Moisture content

The amount of moisture in paper affects both print quality and the ability of the printer to feed the paper correctly. Leave paper in its original wrapper until it is time to use it. This limits the exposure of paper to moisture changes that can degrade its performance.