Lexmark XC4342 Users Guide - Page 13

Learn about the printer 13 Weight Trays can feed paper of varying weights. Paper lighter than 60 g/m2 (16 lb) may not be stiff enough to feed properly, and may cause jams. For more information, see the "Supported paper weights" topic. 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 can contribute to paper curling before printing and can cause feeding problems. Smoothness Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it properly. If paper is too smooth, it can cause paper feeding or print quality issues. We recommend the use of paper with 50 Sheffield points. Moisture content The amount of moisture in paper affects both print quality and the printer ability to feed the paper correctly. Leave paper in its original wrapper until you use it. Exposure of paper to moisture changes can degrade its performance. Before printing, store paper in its original wrapper for 24 to 48 hours. The environment in which the paper is stored must be the same as the printer . Extend the time several days if the storage or transportation environment is very different from the printer environment. Thick paper may also require a longer conditioning period. Grain direction Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long which runs the length of the paper, or grain short which runs the width of the paper. For recommended grain direction, see the "Supported paper weights" topic. Fiber content Most high‑quality xerographic paper is made from 100 percent chemically treated pulped wood. This content provides the paper with a high degree of stability, resulting in fewer paper feeding problems and better print quality. Paper containing fibers such as cotton can negatively affect paper handling. Unacceptable paper The following paper types are not recommended for use with the printer: • Chemically treated papers that are used to make copies without carbon paper. They are also known as carbonless papers, carbonless copy paper (CCP), or no carbon required (NCR) paper. • Preprinted papers with chemicals that may contaminate the printer. • Preprinted papers that can be affected by the temperature in the printer fuser. • Preprinted papers that require a registration (the precise print location on the page) greater than ±2.3 mm (±0.09 in.). For example, optical character recognition (OCR) forms. Sometimes, registration can be adjusted with a software app to print successfully on these forms. • Coated papers (erasable bond), synthetic papers, or thermal papers.