Thermal Inkjet Technology
The HP DeskJet printer family uses Thermal InkJet II (TIJ II) technology. This technology centers on a disposable print cartridge which propels ink out of 48 nozzles. The basic principle of TIJ II is to apply heat to a tiny measure of ink until it expands and is propelled through a nozzle.
This is achieved by first filling a small reservoir, known as the firing chamber, with ink. The next step is to heat the ink with a
This process is repeated up to 8,000 times per second and creates residual heat in the resistor which must be removed. A layer of silicon placed above the resistor transfers the residual heat from the resistor.
