Printers are often classified by the printer technology they use, with several techniques being out there as industrial product. the selection of print technology encompasses a nice result on the value of the printer and price of operation, speed, quality and length of documents, and noise. Some printer technologies do not work with sure kinds of physical media, like carbon or transparencies.
A second side of printer technology that's usually forgotten is resistance to alteration: liquid ink, like from associate degree inkjet head or material ribbon, becomes absorbed by the paper fibers, therefore documents written with liquid ink area unit tougher to change than documents written with toner or solid inks, that don't penetrate below the paper surface.
Cheques are often written with liquid ink or on special cheque paper with toner anchorage so alterations is also detected. The machine-readable lower portion of a cheque should be written exploitation MICR toner or ink. Banks and alternative clearing homes use automation instrumentality that depends on the magnetic flux from these specially written characters to operate properly.
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