US 2002/0054191 A1 · Ink jet printer head and fabrication method for an ink jet printer head

Abstract

An ink jet printer head and fabrication method for an ink jet printer head are provided. The ink jet printer head includes a silicon plate, a thin-film electrode layer, an ink chamber barrier, and a nozzle plate, which are layered in order to form the ink jet printer head. A center portion of the electrode layer is etched a predetermined depth to form a heater portion, thereby increasing electric resistance due to a decreased depth or thickness of the heater portion. Since the heater portion and electrode portions are made of a single material, the process and cost of fabrication is reduced, and productivity is increased.

Claims32

Dependent claims

An ink jet printer head, comprising:

a base plate;
a thin-film electrode layer layered on the base plate, the thin-film electrode layer having a stepped recess formed in thin-film electrode layer, the stepped recess forming a heater portion for heating ink;
an ink chamber barrier layered on the electrode layer, the ink chamber barrier being formed in communication with the stepped recess forming the heater portion to provide an ink chamber for receiving the ink;
and
a nozzle plate layered on the ink chamber barrier, the nozzle plate having a nozzle opening communicating with the ink chamber for discharging the ink.

2 more elements

A fabrication method for an ink jet printer head, comprising the steps of:

layering a base plate;
layering a thin-film electrode layer on the base plate;
layering an ink chamber barrier on the thin-film electrode layer;
etching a portion of the ink chamber barrier so as to provide a portion of an ink chamber for receiving ink;
forming by an etching process a stepped recess of a predetermined depth in a portion of the thin-film electrode layer to provide a portion of the ink chamber and to provide a heater portion for heating ink in the ink chamber;
and
layering a nozzle plate including a nozzle opening on the ink chamber barrier, the nozzle opening communicating with the ink chamber for discharging ink.

4 more elements

Dependencies are inferred from the claim text.

Ink jet printer head and fabrication method for an ink jet printer head

Life of this patent

Ink jet printer head and fabrication method for an ink jet printer head

Life of this patent

Abstract

Claims32