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  2. Teletype Model 28 - Wikipedia

    en.wikipedia.org/wiki/Teletype_Model_28

    The keyboard extends 4.5 inches. This machine, using the standard synchronous motor, uses less than 1.5 amps at 115VAC 60 Hz. The recommended operating environment is a temperature of 40 to 110 Fahrenheit, a relative humidity of 2 to 95 percent and an altitude of 0 to 10,000 feet. The printing paper is an 8.44 inch by 4.5 inch diameter roll.

  3. Teletype Model 33 - Wikipedia

    en.wikipedia.org/wiki/Teletype_Model_33

    The printing paper is an 8.44-by-4.5-inch (214 by 114 mm) diameter roll, and the paper tape is a 1,000-foot (300 m) roll of 1-inch (25 mm) wide tape. Nylon fabric ink ribbons are 0.5-inch (13 mm) wide by 60-yard (55 m) long, with plastic spools and eyelets to trigger automatic reversal of the ribbon feed direction.

  4. Dot matrix printing - Wikipedia

    en.wikipedia.org/wiki/Dot_matrix_printing

    Dot matrix printing, [1] sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout. Dot matrix printers are a type of impact printer that prints using a fixed number of pins or wires [2][3] and typically use a print head that moves back ...

  5. Typewriter - Wikipedia

    en.wikipedia.org/wiki/Typewriter

    A typewriter is a mechanical or electromechanical machine for typing characters. Typically, a typewriter has an array of keys, and each one causes a different single character to be produced on paper by striking an inked ribbon selectively against the paper with a type element.

  6. Near letter-quality printing - Wikipedia

    en.wikipedia.org/wiki/Near_letter-quality_printing

    Near letter-quality (NLQ) printing is a process where dot matrix printers produce high-quality text by using multiple passes to produce higher dot density. [1] The tradeoff for the improved print quality is reduced printing speed. Software can also be used to produce this effect. [2][3] The term was coined in the 1980s to distinguish NLQ ...

  7. Digital printing - Wikipedia

    en.wikipedia.org/wiki/Digital_printing

    Digital printing is a method of printing from a digital -based image directly to a variety of media. [1] It usually refers to professional printing where small-run jobs from desktop publishing and other digital sources are printed using large-format and/or high-volume laser or inkjet printers. Digital printing has a higher cost per page than ...

  8. Teleprinter - Wikipedia

    en.wikipedia.org/wiki/Teleprinter

    Teletype teleprinters in use in England during World War II Example of teleprinter art: a portrait of Dag Hammarskjöld, 1962. A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations.

  9. Dots per inch - Wikipedia

    en.wikipedia.org/wiki/Dots_per_inch

    Dots per inch. A close-up of the dots produced by an inkjet printer at draft quality. Actual size is approximately 1⁄4 by 1⁄4 inch (6 by 6 mm). Individual coloured droplets of ink are visible; this sample is about 150 DPI. Dots per inch (DPI, or dpi[1]) is a measure of spatial printing, video or image scanner dot density, in particular the ...