Epson LQ-850X User Manual - Page 327

Parity Parity is a method for a computer and primer to check the reliability of data transmission. platen The black roller that provides the backing for the paper during printing. print quality Your printer has three types of print quality: draft, SuperDraft, and Letter Quality. Draft and SuperDraft are for high-speed, draft quality jobs; Letter Quality is used to produce more polished documents. proportional printing Printing in which the character width varies from character to character. For example, a capital W receives much more space than a lowercase i. The result looks more like a typeset book than a typewritten draft. pull tractor unit An optional device that feeds continuous paper and multi-part forms through the printer. push tractor A built-in device that feeds continuous paper through the printer. Acronym for Random Access Memory. The portion of the printer's memory used as a buffer and as a place for storing user-defined characters. All data stored in RAM is lost when the printer is turned off. reset To return a primer to its defaults, either by a command,a n I N l T signal, code, or by turning the printer off and on. ROM Acronym for Read Only Memory. The portion of the printer's memory used to store power-on instructions and built-m fonts. Glossary 7