According to this classification printers may be

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ute (lpm) for line printers, and pages-per-minute (dpi) for page printers. The print-speed ranges for the three types of printers are 40 to 450 cps, 1000 to 5000 lpm, and 4 to 800 ppm. 4. Quality of printing. The quality of the printed output is directly proportional to the resolution of printing which is measured in dots per inch (dpi). The dpi qualifier refers to the number of dots that can be printed per linear inch, horizontally or vertically. That is, a 300-dpi printer is capable of printing 90,000 (300 x 300) dots per square inch. According to this classification, printers are classified as near-letter-quality (NLQ), letterquality (LQ), near-typeset-quality {NTQ) and typeset-quality (TQ). Near-letter-quality printers have resolutions of about 300 dpi, letter-quality printers have resolutions of about 600 dpi, near-typeset-quality printers have resolutions of about 1200 dpi, and typesetquality printers have resolutions of about 2000 dpi. NLQ and LQ printers are used for ordinary day-to-day printing jobs, whereas NTQ and TQ printers are used for top-quality professional printing such as in publishing industries. 5. Language scripts. Since printers are output devices meant for producing hard copy output for users, they must be capable of producing output in different languages familiar to different groups of users. In fact, printers are available in almost all scripts, such as, English, Devnagari, Japanese, Arabic, etc. According to this classification, printers may be classified based on the scripts (also called fonts) supported. Note that a printer may simultaneously support multiple scripts in which case it may be used to print in multiple languages. For example, a printer may be capable of printing in both English and Devanagari. 6. Color. Printers may be capable of producing output in a single color (such as blank, red, yellow), in two or three colors (such as a document printed in black and white can have the key words printed in red), or in multiple colors. A...
View Full Document

This document was uploaded on 04/07/2014.

Ask a homework question - tutors are online