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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 ...
MICR characters are printed on documents in one of the two MICR fonts, using magnetizable (commonly known as magnetic) ink or toner, usually containing iron oxide. In scanning, the document is passed through a MICR reader, which performs two functions: magnetization of the ink, and detection of the characters.
The printers use a 40-micron nozzle that outputs more than 100,000 drops per second of ink. While these printers make microprinting faster and easier to produce digitally, they still have not reached the true sub-pixel size of less than 1 point. [11] The smallest scale microtext a laser printer can produce is 0.5 pt. [12]
Beginning in Spring 1993, Canon produced a series of notebooks with integrated inkjet printers called NoteJet. The initial price for the first-model NoteJet was U.S. $2,499. [ 11 ] The NoteJet lineup was eventually discontinued, and computers belonging to the series are valued by collectors.
A Hewlett-Packard laser toner cartridge. A toner cartridge, also called laser toner, is the consumable component of a laser printer.Toner cartridges contain toner powder, a fine, dry mixture of plastic particles, carbon, and black or other coloring agents that make the actual image on the paper.
Solid ink printers are most commonly used as color office printers and are excellent at printing on transparencies and other non-porous media. Solid ink is also called phase-change or hot-melt ink and was first used by Data Products and Howtek, Inc., in 1984. [13] Solid ink printers can produce excellent results with text and images.
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