what is line printer
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Line printers typically print one entire line of text at a time, and then advance the paper by some increment for printing the next line.
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They were historically used with typewriters before being largely supplanted by more modern technologies like inkjet printers, laser printers and dot-matrix printers.
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What is line printer? Line printer is a type of computer printer which prints one entire line of text at once, thereby advancing to print another. It is this separate function that defines it as "line" printer as opposed to "page" (or bit-map) or "character" or "continuous-form" printers.
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The most common line widths are 24 and 80 characters per inch (cpi). Other common resolutions are 600 and 1200 cpi.
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Line printers can be categorized by the media they print on. Line printers that print on paper have been primarily replaced by laser printers, which use toner instead of ink in the printing process; however, in the absence of toner,
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line printer technology is still used for printing on black-and-white paper from a laser printer, or for creating text or drawings on special textured paper (notably "texture' materials) to be printed directly onto an offset press.
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Line printer technology is also used for printing on special forms of paper, such as PVC or vinyl. Because of its ability to print on thin and flexible media, line printers have been utilized in a wide range of applications.
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They can be found in industry, commercial and residential settings where one or more lines are needed to be printed, whether it be product barcodes, manuals, labels or even use as a prototyping tool.
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Line printers should not be confused with "two-sided printers" which print two pages at once (or frequently 3 pages at once). They are distinct devices that share no function other than the printing of one entire line at a time.
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A line printer consists of several distinct sections. The printhead containing the actual printing mechanism or stylus generating a marking on the medium.
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The control system which parses text and graphics, and handles sending the information to the print engine. Finally, a platen roller that feeds paper through while printing is in progress.
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The stylus or printhead is essentially a felt-tipped pen which uses ink or toner as its medium and transfers it to the media being printed on. It normally uses either a thermal transfer process or a laser beam to generate the ink or toner.
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The control system of the line printer prints some form of text, such as type, graphics, barcodes and logos.
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The paper is taken by the platen roller and fed through the printhead at a very high speed. If printing to paper, it is typically printed on one sheet at a time, then moved to its next position before printing another line.
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In those cases where the printheads are used for special purposes (such as PVC or hologram) this entire process can be repeated very quickly in order for multiple lines of text to be printe
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