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The Xerox 500 series is a discontinued line of computers from Xerox Data Systems (XDS) introduced in the early 1970s as backward-compatible upgrades for the Sigma series machines. Although orders for the Xerox 530 were deemed "encouraging" as of January 1974, [ 1 ] the systems had failed to gain traction by the time Xerox sold its Data Systems ...
The Xerox 914 was the first successful commercial plain paper copier. Introduced in 1959 by the Haloid/Xerox company, it revolutionized the document-copying industry. The culmination of inventor Chester Carlson 's work on the xerographic process, the 914 was fast and economical.
Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was used to print the document.
Haloid called the new copier machines "Xerox Machines" and, in 1948, the term Xerox was trademarked. Haloid eventually became Xerox Corporation in 1961. In 1949, Xerox Corporation introduced the first xerographic copier, called the Model A. [ 3 ] Seeing off computing-leader IBM [ 4 ] in the office-copying market, Xerox became so successful that ...
Error-correcting codes are usually distinguished between convolutional codes and block codes: Convolutional codes are processed on a bit-by-bit basis. They are particularly suitable for implementation in hardware, and the Viterbi decoder allows optimal decoding. Block codes are processed on a block-by-block basis.
Some models can use wheels with two rows of characters, allowing for the machine to print in two different languages or with a large set of special symbols. [3] The printer uses cartridge-loaded ribbons; both an economical endless cloth ribbon and a high-quality single-use film ribbon were available, with colored ribbons provided by third parties.
Xerox was founded in 1906 in Rochester, New York, as the Haloid Photographic Company. [11] It manufactured photographic paper and equipment. In 1938, Chester Carlson, a physicist working independently, invented a process for printing images using an electrically charged photoconductor-coated metal plate [12] and dry powder "toner".
The Xerox Star workstation, officially named Xerox Star 8010 Information System, is the first commercial personal computer to incorporate technologies that have since become standard in personal computers, including a bitmapped display, a window-based graphical user interface, icons, folders, mouse (two-button), Ethernet networking, file servers, print servers, and email.