Inkjet Printer

The Inkjet Printer

Inkjet printers are the most commonly used and owned printers in our modern society. They have been adapted and improved over the years to the household object we have today. HP and Cannon were the pioneers of the inkjet printer, developing the design from 1977 to present. Thermal inkjet printers use a process called thermal DOD, where the ink droplets are heated before being deposited onto the page. A pulse of current is passed through the heating element, causing vapid vaporisation of the ink. This causes a bubble to propel the ink onto the paper, creating the image. A second type of inkjet printer, the piezoelectric inkjet, use a squeezing method to eject ink, causing a vacuum that sucks more ink into the printhead ready for the next print. They use the CMYK colour system, discussed in depth on the page Colour Models.

Below is an image of a Cannon inkjet printer showing the CMYK ink cartridges

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