Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1988-02-08
1989-05-30
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428210, 428426, 428432, 428701, 428901, 156 89, 174 685, 338306, B32B 300, B32B 1706
Patent
active
048350389
ABSTRACT:
A substrate coated with a plurality of thick films wherein conductive layers are wholly prepared from conductive paste. The present invention offers the advantages that the drawbacks accompanying the conventional conductor of silver-palladium base are overcome by forming a resistor having a required resistivity and a high reproducibility. A conductive paste and insulative paste are fired at a lower temperature than that at which the resistor paste is fired, without reducing the adhesion strength of the conductive layer to the substrates. A low temperature melting point crystalline composition is used as an insulative layer to ensure that the resistance of the resistor is not adversely affected by repeated firings.
REFERENCES:
patent: 3914514 (1975-10-01), MacKenzie et al.
patent: 4286251 (1981-08-01), Howell
patent: 4316942 (1982-02-01), Kuo
patent: 4490429 (1984-12-01), Tosaki et al.
patent: 4663215 (1987-05-01), Dubuisson et al.
patent: 4732798 (1988-03-01), Ishida et al.
DuPont's Mydas System, "DuPont Offers a New High-Yield High Performance, Thick Film Materials and Processing System", (7-84).
Ezaki Shiro
Kaneko Tsuneo
Kabushiki Kaisha Toshiba
Robinson Ellis P.
Ryan P. J.
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