A glass material is deposited upon a ceramic substrate and then fired at an elevated temperature in air. Screen printed resistor elements formed on the glass material are fired, lapped, and annealed.

A thick-film thermal printhead comprises: an oblong rectangular substrate (1) having at least one longitudinal edge (1a); a partial glaze layer provided on the substrate along the longitudinal edge; a linear heating resistor (11) formed on the partial glaze layer; a common electrode (12) formed on the substrate and electrically connected to the heating resistor; and a plurality of individual electrode (13) formed on the substrate and electrically connected to the heating resistor. The common ele...

A method of making a copper thick film conductor paste which includes the step of preoxidizing a controlled amount of the copper powder particles. A copper thick film conductor paste, and an electrical conductor element and a method of making it from the paste.

A thick-film switch element includes a high-temperature glass frit fused to a non-conductive substrate. A cermet layer having a low-temperature glass matrix is fired in a conventional furnace to sink into the glass frit layer such that the resulting thickness of the switch element layer is approximately equal to the original thickness of the glass frit layer. The wet print thickness of the cermet layer is controlled upon application of the cermet to the glass frit. The glass frit and cermet are ...

A thick film circuit board comprising an insulating substrate; conductor wiring layers of a conductive material containing an oxide and formed on the insulating substrate by printing and firing; a resistance layer of a resistive material having a selected sheet resistance, being chemically reactive with the oxide, and formed between and bridging the conductor wiring layers by printing and firing; and a conductive barrier layer interposed between each of the conductor wiring layers and the resist...

A thick film thermocouple matching the performance of solid wire thermocouples and capable of operating at high temperatures with minimal drift is produced by (1) forming two powdered metal pastes of differing compositions, each including a frit which is substantially neutral with respect to the metal components of the respective paste and has essentially no effect upon the thermoelectric EMF, (2) applying the pastes to a surface to form a pair of thick film elements overlapping at one point whi...

A metal container with thick walls, comprising various parts assembled and elded, and provided with at least one nozzle connecting it to a pipe and support means, each nozzle and the support means being manufactured integral with the part of the container on which they are located.

A thick film integrated circuit comprises a ceramic substrate, conductors formed on one surface of the ceramic substrate, circuit components mounted on the one surface of the ceramic substrate, a resistance for a variable resistor formed on the other surface of the ceramic substrate, variable resistor elements including an adjusting shaft and a slider member constituting the variable resistor formed in cooperation with the resistance, and means for mounting the elements of the variable resistor ...

Metallization suitable for making printed thick film terminations comprising an admixture of finely divided particles of palladium/silver as the conductive phase and bismuth-free low-melting, low viscosity devitrifiable glass as the binder phase. The composition optionally contains a spinel-forming metal oxide to raise substrate adhesion.

The present invention relates to a method and apparatus for the production of fibrous insulation, especially relatively thick fibrous insulation. Previously some relatively thick insulation has been produced through lamination techniques using a plurality of insulation layers, which possibly included the use of a continuous fibrous hinge as an alignment aid during lamination. However, proper alignment using a continuous hinge is difficult and leaves an objectionable bulge of fibrous material. Th...