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Refined Printing Command Stream, also known as RPCS, is a vector-based [1] printing/duplicating control protocol, designed for communication between Microsoft Windows PC clients, and several lines of Ricoh copiers. Drivers provided by Ricoh install the chosen copier to behave as a printer device.
PCL 3 is still in use on several impact printers which replaced the obsolete HP models. PCL 3+ (mono) and PCL 3c+ (color) are used on later HP DeskJet and HP PhotoSmart products. PCL 3GUI is used in the HP DesignJet, some DeskJet series printers, and OfficeJet series printers. It uses a compressed raster format that is not compatible with ...
Printer steganography is a type of steganography – "hiding data within data" [30] – produced by color printers, including Brother, Canon, Dell, Epson, HP, IBM, Konica Minolta, Kyocera, Lanier, Lexmark, Ricoh, Toshiba and Xerox [31] brand color laser printers, where tiny yellow dots are added to each page. The dots are barely visible and ...
HP's stated that the firmware was intended to provide "the best consumer experience" and "protect" customers from "counterfeit and third-party ink cartridges that do not contain an original HP security chip and that infringe on our IP." [50] In 2023, PC World reported that HP printers still prevent users from using third-party ink. [51]
Daisy wheel printing is an impact printing technology invented in 1970 by Andrew Gabor [1] at Diablo Data Systems.It uses interchangeable pre-formed type elements, each with typically 96 glyphs, to generate high-quality output comparable to premium typewriters such as the IBM Selectric, but two to three times faster.