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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 ...
Printing Russian 5,000 ₽ banknotes with a metallic spot color. In offset printing, a spot color or solid color is any color generated by an ink (pure or mixed) that is printed using a single run, whereas a process color is produced by printing a series of dots of different colors. [1]
Spectral printing is the art and science of reproducing the spectra of a scene-referred image, by means of hard-copy printing using more than four process-colour printing inks namely cyan, magenta, yellow and black and their lighter versions. The additional secondary inks are often referred to as spot colours.
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 ...
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 ...
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A technique for allowing a camera to be pre-focussed to a defined spot, and the exposure is only made when a subject is in focus at that spot. Also called trap focus. CMOS: Complementary metal oxide semiconductor. A semiconductor technology, used to create photosensor arrays for some digital cameras. [4] CMYK: CMYK color model. A subtractive ...
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