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Print speeds of 600 lines per minute [2] (approximately 10 pages per minute) were achieved in the 1950s, later increasing to as much as 1200 lpm. Line printers print a complete line at a time and have speeds in the range of 150 to 2500 lines per minute. Some types of impact line printers are drum printers, band-printers, and chain printers.
The lines often are printed with fine width and in light colour and such paper is sometimes called feint-ruled paper. Additional vertical lines may provide margins, act as tab stops or create a grid for plotting data; for example, graph paper (squared paper or grid paper) is divided into squares by horizontal and vertical lines.
Continuous form paper is used in some of the fastest types of printing systems, some of which print text at a rate of 20,000 lpm (lines per minute). This will produce about 400 pages per minute, using about 8–11 large boxes of paper for every hour of printing (affected by character density, and other details such as paper weight).
Line printers provide a limited set of commands to control how the paper is advanced when print lines are printed. The application writing reports, list, etc. to be printed has to include those commands in the print data. These single character print commands are called printer control characters.
Whiteprint plan copy. USSR whiteprints. 70s. Whiteprint describes a document reproduction produced by using the diazo chemical process. [1] It is also known as the blue-line process since the result is blue lines on a white background.
Lines per inch (LPI) is a measurement of printing resolution. A line consists of halftones that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be.
The 1404 can print on continuous forms at 600 lines per minute, and on cards at 800 cards per minute. The mechanism can handle cards ranging from 51 columns to a full 80 columns, and can print cards two at a time. Up to 25 lines can be printed on a card. The printer can also interpret cards, that is, read the card and print what was punched.
Paper tape controlled Linotype Model 5cS, manufactured in Germany (on display at Deutsches Museum, Munich) The Linotype machine (/ ˈ l aɪ n ə t aɪ p / LYNE-ə-type) is a "line casting" machine used in printing which is manufactured and sold by the former Mergenthaler Linotype Company and related companies. [1]