Inkjet
Piezoelectric
Piezoelectric inkjet technology was invented and is under patent by Epson. In this technology, a small piezo-crystal is attached to the ink reservoir in the nozzle. When a dot is required, a tiny current is passed through the piezo-crystal which causes it to oscillate. This oscillation causes a drop of ink to be squeezed out of the nozzle.
There are several advantages of using piezoelectric technology over thermal
inkjet. First of all, it gives greater control over the amount of ink that is
sprayed. Also, the ink does not have to be heated and cooled saving both time and
allowing for the use of a greater variety of inks. Lastly, in practice
piezoelectric printers generally produce higher quality images especially when
printed on glossy paper. Typical quality is around 720 dpi.
picture from:
pctechguide.com
