US 2002/0171715 A1 · Configuration of inkjet head realizing uniform ink ejection performance

Abstract

An inkjet head 100 includes a pair of support plates 17A, 17B and a diaphragm plate 9 interposed between the support plates 17A, 17B. In this configuration, even when adhesion between the diaphragm plate 9 and the support plate 17B is insecure, and when a piezoelectric element 12 deforms a diaphragm 7 toward a pressure chamber 3, that is, in a direction away from the support plate 17B, the support plate 17A prevents the diaphragm plate 9 from peeling off the support plate 17B. Accordingly, the dimension and thus a deforming amount of the diaphragm 7 is maintained uniform, whereby a uniform ink ejection performance is maintained.

Claims17

Dependent claims

An inkjet head comprising:

a diaphragm plate having a first surface and a second surface;
a piezoelectric element attached to the first surface of the diaphragm plate for selectively deforming the diaphragm plate, and
a support plate attached to the second surface of the diaphragm plate and formed a first through hole and a second through hole;
and
a channel plate attached to the support plate in a manner that the support plate is interposed between the channel plate and the diaphragm plate, the channel plate being formed with a channel fluidly connecting the first through hole and the second through hole.

2 more elements

Dependencies are inferred from the claim text.

Configuration of inkjet head realizing uniform ink ejection performance

Life of this patent

Configuration of inkjet head realizing uniform ink ejection performance

Life of this patent

Abstract

Claims17