Substrate having layered electrode structure for use in ink jet

Details Substrate having layered electrode structure for use in ink jet Substrate having layered electrode structure for use in ink jet

1995-03-28

2000-05-02

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 205

Patent

active

060563915

ABSTRACT:
A substrate for an ink jet head comprises a base member and an electrothermal converting body formed on the base member, the electrothermal converting body including a resistor layer and a pair of electrode layers connected to the resistor layer wherein the resistor layer positioned between a pair of the electrode layers serves as a heat generating portion for generating thermal energy utilized for discharging ink; wherein one of a pair of the electrode layers passes under the heat generating portion; an electrode layer positioned under the heat generating portion has a multi-layer structure composed of a plurality of layers; and at least one of a plurality of the layers, being nearest to the heat generating portion, is made of a metal having a melting point of 1500.degree. C. or more at 1 atm. An ink jet head using this substrate is able to prolong service life while reducing a failure ratio, and to continue preferable ink discharge for a long period of time.

REFERENCES:
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patent: 4947191 (1990-08-01), Nozawa et al.
patent: 5006867 (1991-04-01), Koizumi et al.
patent: 5081474 (1992-01-01), Shibata et al.
patent: 5420623 (1995-05-01), Tamura
Lewis, Hawley's Condensed Chemical Dictionary, 12thed, 1993.

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