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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) 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 ...
Hewlett-Packard (HP) developed the first ScanJet in the mid-1980s at their printer division in Boise, Idaho. [4] [5] The ScanJet was released in March 1987, [6] as a compliment to their LaserJet series, which was the first commercially successful line of laser printers ever released, [7] introduced in 1984 and also developed at Boise.
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 ...
Canon supplies both mechanisms and cartridges for most HP laser printers; some larger A3 models use Samsung print engines. [ 2 ] [ 3 ] These printers (and later on all-in-one units, including scanning and faxing) have, as of 2020, a three decade plus history of serving both in offices and at home for personal/at home use.
For example, Canon and some HP inkjet printers incorporate a replaceable print head which eventually fails. However, the high cost of a replacement forces the owner to scrap the entire device. [27] Pentalobe screws used in an iPhone 6S. Critics have argued that Apple's use of pentalobe screws in their newer devices is an attempt to prevent the ...
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".
A computer network is a set of computers sharing resources located on or provided by network nodes.Computers use common communication protocols over digital interconnections to communicate with each other.
Canon (canon law), a law or ordinance promulgated by a synod, ecumenical council, or individual bishop (within the canon law system of that Church). Canon (clergy), a title of certain Christian priests Canon regular, a priest who lives in community under a rule; Canon (hymnography), a kind of hymn in Eastern Orthodox Christianity