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  2. Image scanner - Wikipedia

    en.wikipedia.org/wiki/Image_scanner

    Alexander Murray and Richard Morse invented and patented the first analog color scanner at Eastman Kodak in 1937. Intended for color separation at printing presses, their machine was an analog drum scanner that imaged a color transparency mounted in the drum, with a light source placed underneath the film, and three photocells with red, green, and blue color filters reading each spot on the ...

  3. Copy detection pattern - Wikipedia

    en.wikipedia.org/wiki/Copy_detection_pattern

    A digital CDP (100x100 pixel binary image) is printed at 600 pixels per inch (ppi) on a Canon C6045 laser printer. The original CDP real image size is 4.2mm x 4.2mm. This original CDP was scanned at 2400 ppi with a CanoScan 9000F flatbed scanner. The scan was processed with GIMP for image restoration, then printed on the same Canon C6045 laser ...

  4. Patch Code - Wikipedia

    en.wikipedia.org/wiki/Patch_Code

    Patch 1, WWNN, used for post scan image control; Patch 4, NWWN, used for post scan image control (toggle patch) Patch 6, NNWW, used for post scan image control; The Patch Code needs to be in a specific position on the page, but that position may vary with the image scanner used. The Patch Code is usually close to feed edge of the scanner.

  5. Automatic document feeder - Wikipedia

    en.wikipedia.org/wiki/Automatic_document_feeder

    Reverse automatic document feeder A scanner with a duplexing automatic document feeder A Konica Minolta photocopier with an automatic document feeder in use. In multifunction or all-in-one printers, fax machines, photocopiers and scanners, an automatic document feeder or ADF is a feature which takes several pages and feeds the paper one page at a time into a scanner or copier, [1] allowing the ...

  6. List of Canon products - Wikipedia

    en.wikipedia.org/wiki/List_of_Canon_products

    Canon printers are supplied with Canon Advanced Printing Technology (CAPT), a printer driver software stack developed by Canon. The company claims that its use of data compression reduces their printer's memory requirement, good quality compared to conventional laser printers, and also claim that it increases the data transfer rate when ...

  7. Optical character recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_character_recognition

    Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

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    mail.aol.com

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  9. Duplex scanning - Wikipedia

    en.wikipedia.org/wiki/Duplex_scanning

    Duplex scanning is a feature of some computer scanners, and multifunction printers (MFPs) that support duplex printing. A duplex scanner can automatically scan a sheet of paper on both sides. Scanners without this capability can only scan both sides of a sheet of paper by reinserting it manually the other way up.