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  2. Toner cartridge - Wikipedia

    en.wikipedia.org/wiki/Toner_cartridge

    Toner cartridges contain toner powder, a fine, dry mixture of plastic particles, carbon, and black or other coloring agents that make the actual image on the paper. The toner is transferred to paper via an electrostatically charged drum unit, and fused onto the paper by heated rollers during the printing process. It will not stain like ink ...

  3. Laser printing - Wikipedia

    en.wikipedia.org/wiki/Laser_printing

    Applying a negative charge to the photosensitive drum. In older printers, a corona wire positioned parallel to the drum or, in more recent printers, a primary charge roller, projects an electrostatic charge onto the photoreceptor (otherwise named the photoconductor unit), a revolving photosensitive drum or belt, which is capable of holding an ...

  4. Katun Corporation - Wikipedia

    en.wikipedia.org/wiki/Katun_Corporation

    In 1991, Katun introduced its first amorphous silicon (a-Si) drum and remanufactured drum unit/cartridge.. Katun became a fuser roller manufacturer. In 1994, Katun opened a newly constructed North American Distribution Center in Davenport, Iowa and became the first aftermarket company to sell “patch technology” that allowed Katun to offer a fully compatible OPC drum that enabled normal ...

  5. Printer (computing) - Wikipedia

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

    Print drum from drum printer. Drum printers, where a horizontally mounted rotating drum carries the entire character set of the printer repeated in each printable character position. The IBM 1132 printer is an example of a drum printer. [19]

  6. Line printer - Wikipedia

    en.wikipedia.org/wiki/Line_printer

    In a typical drum printer design, a fixed font character set is engraved onto the periphery of a number of print wheels, the number matching the number of columns (letters in a line) the printer can print. The wheels, joined to form a large drum (cylinder), spin at high speed.

  7. Photocopier - Wikipedia

    en.wikipedia.org/wiki/Photocopier

    The drum areas that are exposed to light become conductive and therefore discharge to the ground. The drum area not exposed to light (those areas that correspond to black portions of the original document) remains negatively charged. Developing: The toner is positively charged. When it is applied to the drum to develop the image, it is ...

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