Method for apparatus for variably controlling size of print head orifice and ink droplet

摘要

An ink jet print head apparatus which produces variably controls the ink jet print head orifices and the size of the ink jet droplets ejected therethrough, and a method for controlling the size of said orifices and ink jet droplets. The print head apparatus utilizes orifice plates formed from piezoelectric material selected according to expansion and contraction properties for the variable control of the diameter of the orifice through which the ink is ejected from the print head. The variability of the orifice dimensions is controlled by applying a voltage across the piezoelectric members, resulting in improved control over the size of the ejected ink droplets.