Dot-matrix Printer Definition

DocumentID: 656087
Revision Date: 29-Feb-96 8:29:40 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Solutions: Dot-matrix Printer: A type of line printer that uses a matrix of dots to form an image of the character being printed. It is an impact printer that forms text and graphic images by pressing the end of pins against a ribbon. The ends of the wires form a character made up of a pattern (matrix) of dots. Also called a "matrix printer". Dot-matrix printers are fast, but the output they produce is generally poor quality because the characters are not fully formed. These printers can also be extremely noisy. Some dot-matrix printers use 24 pins instead of 9 pins, and the quality of the output is better with 24 pins. Many dot-matrix printers offer a near-letter-quality (NLQ) mode that sacrifices speed to produce substantially improved output. In the NLQ mode, the printer passes over a line several times, offsetting the dots to form a solid character. Higher grade dot-matrix printers can produce printout in more that one type style and size (called a font). Fonts are measured in points (1/72 of an inch). A standard type size is 12 points, producing 6 lines per vertical inch on the page.

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