Patent ID: 9150008
Filing Date: 2015-10-06
Classification: B41J,Y10T

Abstract:
1. An ink jet head comprising a plurality of individual ink integrally formed jetting heads, each ink jetting head comprising: a vibration plate having a first and a second surface and an opening of a first diameter extending therethrough from the first to the second surface; an ink pressure chamber, communicating with the opening and arranged on the first surface of the vibration plate; a first electrode formed on the second surface of the vibration plate; a piezoelectric layer formed on the first electrode in a region adjacent to the opening, and that, in response to a driving voltage, deforms the vibration plate to expand or contract the volume of the ink pressure chamber; a second electrode formed on the piezoelectric layer; a protective layer which is at least formed on the vibration plate and the second electrode and lining the opening to form a nozzle for ejecting the ink having a diameter smaller than the first diameter; and an ink-feeding supply fluidly coupled to the ink pressure chamber.