Ink jet recording head with through-hole wiring connector

Details Ink jet recording head with through-hole wiring connector Ink jet recording head with through-hole wiring connector

1991-03-07

1992-10-20

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 205

Patent

active

051574187

ABSTRACT:
A substrate for a liquid emission recording head, comprises: a support member, plural electrothermal converting elements formed on the support member and each provided with a heat generating resistor layer, a common electrode wiring layer and an individual electrode wiring layer both connected to the heat generating resistor layer, and a protective layer for the above-mentioned layers; an insulating layer formed on the common electrode wiring layer; and a common electrode connected in common to the plural common electrode wiring layers across the insulating layer by through-holes provided in the insulating layer.
In one embodiment the insulating layer covers the protective layer and is in contact with the common electrode wiring layer in the through-holes. In another embodiment, the protective and insulating layers are formed as steps on the common electrode wiring layer.

REFERENCES:
patent: 4458256 (1984-07-01), Shirato
patent: 4499480 (1985-02-01), Takatori
patent: 4862197 (1989-08-01), Stoffel
patent: 4947192 (1990-08-01), Hawkins

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