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Nozzle Plate: Expels ink onto the paper. Cover Plate: Protects the nozzles. Common Ink Chamber: A reservoir holding a small amount of ink prior to being 'jetted' onto the paper. Piezoelectric Substrate (in Piezoelectric printers) : houses the piezoelectric crystal. Metallic plate / resistor (in Thermal printers): Heats the ink with a small current.
Commercial printheads can have a single nozzle (Solidscape) or thousands of nozzles (HP) and many other variations in between. Arrayed Inkjet Apparatus (John G Martner patent 4468680, 1984 Exxon Research and Engineering Co) was invented after testing a Piezo DOD epoxied on the end of a piano wire 30 inches long and inserted into an ink fluid ...
Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. [1] Inkjet printers were the most commonly used type of printer in 2008, [2] and range from small inexpensive consumer models to expensive professional machines.
A HP LaserJet 4000n printer. The LaserJet 4000/4050 and their respective variants were the first printers released in the 4000 series. The LaserJet 4000 series printers print letter paper at 17 pages per minute, and can be set to print at 600 dpi or 1200 dpi, although when set to print at true 1200 dpi, the printer runs at reduced speed.
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 ...
Continuous ink system in an HP Business Inkjet 1200n. The ink is transported from tanks through the black flexible band, which is vertically rigid so it does not fall into the path of the printhead and cause a jam. Close-up view of the above printer, showing the individual removable printheads and ink tanks for each color.
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A HP color laser printer with its cartridge drawer open showing the four toner cartridges inside. Color laser printers use colored toner (dry ink), typically cyan, magenta, yellow, and black . While monochrome printers only use one laser scanner assembly, color printers often have two or more, often one for each of the four colors.