Q:

What is the difference between an inkjet and a DeskJet printer?

A:

An inkjet is a type of printer technology that sprays ionized ink onto a medium, and Deskjet is a brand of inkjet printers by Hewlett Packard. Both utilizes a series of microscopic nozzles that spray a stream of ink directly onto paper. The HP DeskJet is aimed at people who want to occasionally print pictures as well as documents at home.

The first inkjet mechanism that was developed sprays a continuous stream of droplets that are aimed onto the paper. Although still used, most inkjets use the drop on demand method, which forces a drop of ink out of a chamber by heat or electricity. The thermal method used by HP, Canon and others heats a resistor that forces a droplet of ink out of the nozzles by creating an air bubble in the ink chamber. Epson uses a piezoelectric technique that charges crystals that expand and "jet" the ink. The printer takes about half a second to complete one horizontal swipe across a page, and thousands of ink droplets can be found on a finished page. The printing resolutions of inkjets vary from 1200 x 1200 dpi to 4800 x 1200 dpi. DeskJets offer resolutions up to 2400 x 2400 dpi.


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