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Impact Printers:
It is a type of printer that works by direct contact of an ink ribbon with paper. These printers are typically loud but remain in use today because of their unique ability to function with multipart forms. An impact printer has mechanisms resembling those of a typewriter.
Example of Impact Printers, Dot-matrix printers, Daisy-wheel printers, and line printers.
Non-Impact Printers:
It is a type of printer that does not hit or impact a ribbon to print. They used laser, xerographic, electrostatic, chemical and inkjet technologies. Non-impact printers are generally much quieter. They are less likely to need maintenance or repairs than earlier impact printers.
Example of Non-Impact Printers is Inkjet printers and Laser printers.