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  2. Laser printing - Wikipedia

    en.wikipedia.org/wiki/Laser_printing

    e. Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image. [1] The drum then selectively collects electrically charged ...

  3. Printer (computing) - Wikipedia

    en.wikipedia.org/wiki/Printer_(computing)

    They were also called "132-column printers". In computing, a printer is a peripheral machine which makes a durable representation of graphics or text, usually on paper. [1] While most output is human-readable, bar code printers are an example of an expanded use for printers. [2]

  4. HP LaserJet 4 - Wikipedia

    en.wikipedia.org/wiki/HP_LaserJet_4

    HP LaserJet 4. The HP LaserJet 4 (abbreviated sometimes to LJ4 or HP4) is a group of monochrome laser printers produced in the early to mid-1990s as part of the LaserJet series by Hewlett-Packard (HP). The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. [1]

  5. Copy detection pattern - Wikipedia

    en.wikipedia.org/wiki/Copy_detection_pattern

    A copy detection pattern (CDP) [1] or graphical code [2] [3] is a small random or pseudo-random digital image which is printed on documents, labels or products for counterfeit detection. Authentication is made by scanning the printed CDP using an image scanner or mobile phone camera. [4] It is possible to store additional product-specific data ...

  6. Multi-function printer - Wikipedia

    en.wikipedia.org/wiki/Multi-function_printer

    Multi-function printer. A Ricoh 5055 B&W MFP (released in 2017). An MFP (multi-function product / printer / peripheral), multi-functional, all-in-one (AIO), or multi-function device (MFD), is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business setting ...

  7. Page printer - Wikipedia

    en.wikipedia.org/wiki/Page_printer

    Page printer. A page printer is a computer printer which processes and prints a whole page at a time, as opposed to printers which print one line or character at a time such as line printers and dot-matrix printers. Page printers are often all incorrectly termed “laser printers” —although virtually all laser printers are page printers ...