Class 257/E49.004 - Thin-film or thick-film devices (EPO)

Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E49.001. This subclass
No. of patents: 39
Last issue date: 01/05/1993

Number	Title	Issue Date
5177498	Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus A layer of an amorphous substance containing at least one member from among hydrogen and halogen elements and using as main components thereof silicon and at least one member selected from among nitrogen, carbon, and oxygen is formed as a resin-protecting...	01/05/1993
5119112	Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus A layer of an amorphous substance containing at least one member from among hydrogen and halogen elements and using as main components thereof silicon and at least one member selected from among nitrogen, carbon and oxygen is formed as a resin-protecting ...	06/02/1992
5053249	Method for producing resistors A method for producing a resistor is disclosed, comprising coating a metal organic compound solution containing a ruthenium complex and at least one complex of an element selected from the group consisting of silicon, barium, bismuth and lead on a substra...	10/01/1991
4963893	Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus A layer of an amorphous substance containing at least one member from among hydrogen and halogen elements and using as main components thereof silicon and at least one member selected from among nitrogen, carbon, and oxygen is formed as a resin-protecting...	10/16/1990
4851808	Heat-generating resistor and heat-generating resistance device by use of said heat-generating resistor A heat-generating resistor, having a functional thin film comprising an amorphous material containing hydrogen atoms in a matrix of carbon atoms formed on a substrate....	07/25/1989
4835550	Thick film type thermal head A thick film type thermal printing head is characterized by having as a protective film a surface layer of at least one amorphous glass layer and an underlying layer of at least one crystallized glass layer or inorganic material-filled amorphous glass lay...	05/30/1989
4809428	Thin film device for an ink jet printhead and process for the manufacturing same A process for manufacturing a thin film resistor substrate useful, for example, in fabricating an ink jet printhead, wherein discontinuous strips of conductive material are initially patterned on the surface of a resistive layer. These strips are formed u...	03/07/1989
4804974	Thermal recording head A thermal recording head comprises a heating resistor layer and at least a pair of electrodes electrically connected to said heating resistor layer, at least one combination of said heating resistor layer and said at least a pair of electrodes being forme...	02/14/1989
4782202	Method and apparatus for resistance adjustment of thick film thermal print heads A method and an apparatus for adjusting the resistance value of a thermal head assembly. One voltage pulse or a set of voltage pulses of a preselected peak value are impressed on the heat generating resistor elements of the thermal head assembly. The resi...	11/01/1988
4779103	Thermal head and method of manufacturing the same Disclosed is a thermal head in which an oxidation proof layer and an abrasion resisting layer are formed on a heating resistor layer and an electric conductor layer, the abrasion resisting layer being a metal layer in which abrasion resisting particles ar...	10/18/1988
4751518	Heating resistor as a thermal head resistive element Disclosed is a heating resistor composed of tungsten of 35-45 at. %, aluminum of 25-35 at. %, nitrogen of 10-20 at. %, and oxygen of 5-20 at. %, and a thermal head comprising a heating resistor layer composed of tungsten of 35-45 at. %, aluminum of 25-35 ...	06/14/1988
4743923	Thermal head A thin film type thermal head includes a head substrate member, a partial projected glaze portion mounted on the head substrate member, a plurality of heating resistor elements provided on the partial projected glaze portion with each of the heating resis...	05/10/1988
4742361	Thermal print head Disclosed is a thermal head in which a heat-generating resistor layer, a power feeding conductor layer, and a protecting film are formed on an electrically insulating substrate, the heat generating resistor layer being constituted by an alloy of tantalum,...	05/03/1988
4734709	Thermal head and method for fabricating A thermal head which comprises a heating resistor film made of tantalum nitride orientated in (101) direction by a reactive sputtering process....	03/29/1988
4724182	Thin film circuit substrate Disclosed is a thin film circuit substrate which comprises an electrically insulating substrate, and at least one conductor layer and one protecting layer which are formed on the substrate, the insulating substrate having a surface roughness which is equa...	02/09/1988
4710263	Method of fabricating print head for thermal printer A method of fabricating a print head for use in a thermal printer is similar to the additive (or lift-off) method of pattern transfer utilizing semiconductor fabrication technology except that a metal film is used instead of photoresist conventionally use...	12/01/1987
4709243	Thermal head and method for manufacture thereof A thermal head having a heat-generating resistor layer, a power feeding conductor layer, and a protective layer superposed on an electrically insulating layer, acquires improved quality by forming the heat-generating resistor layer with an alloy consistin...	11/24/1987
4705697	Electron beam formation of a thermal head using titanium silicide Disclosed is a thermal head for thermal recording, which comprises as the heat-generating resistor a dense thin layer having a composition represented by the following formula: wherein x is a number of from 0.25 to 0.45, y is a number of from 0.25 to 0.40 and ...	11/10/1987
4701769	Thermal head and method for fabrication thereof Disclosed is a thermal head for thermal recording, which comprises as the heat-generating resistor a dense thin layer having a composition represented by the following formula: wherein x is a number of from 0.25 to 0.45, y is a number of from 0.25 to 0.40...	10/20/1987
4695853	Thin film vertical resistor devices for a thermal ink jet printhead and methods of manufacture The specification describes thermal ink jet (TIJ) processes and device structures produced thereby wherein either heater resistors or heater resistor-diode combinations are constructed vertically upward from a common supporting substrate. A lower or first...	09/22/1987
4632845	Process for the fabrication of thermal printing boards in multilayer thick-film technology A process for fabricating electronic switching elements and/or circuits in multilayer thick-film technology on a substrate. The electronic switching elements and/or circuits are printed onto the substrate in the form of liquid or pasty mixtures of materia...	12/30/1986
4601777	Thermal ink jet printhead and process therefor Several fabricating processes for ink jet printheads are disclosed, each printhead being composed of two parts aligned and bonded together. One part is a substantially flat substrate which contains on the surface thereof a lineal array of heating elements...	07/22/1986
4574292	Thermal head In a thermal head having a substrate and a heating resistor of thin film type formed thereon, the heating resistor is a deposited metal oxide film essentially consisting of ruthenium oxide and an oxide of at least one metal M selected from the group consi...	03/04/1986
4545881	Method for producing electro-thermal transducer An electro-thermal transducer is composed of a substrate, a resistive heater element formed on the substrate, and electrically conductive members to supply electric power to the resistive heater element, wherein the resistive heater element contains a met...	10/08/1985
4517444	Thermal printhead Disclosed is a thermal printhead made of an insulating substrate, and a heat generating resistor layer formed on the substrate, and wherein the heat generating resistor layer is supplied with electric current. The heat generating resistor layer is made of...	05/14/1985
4504340	Material and process set for fabrication of molecular matrix print head A method for fabricating a molecular matrix print head for use in nonimpact electrolytic printers. Green ceramic sheets are stacked and laminated, then embossed with insulators and screened with ruthenium dioxide. The assembly is then co-sintered at less ...	03/12/1985
4446355	Crossover construction of thermal-head and method of manufacturing same A crossover construction of a thermal-head is which the thermal-head comprises: a substrate of insulating material; a plurality of heat elements disposed side by side in one row on said substrate; a plurality of lower thin film conductor patterns each of ...	05/01/1984
4343986	Thermal printhead A thermal printhead comprising a substrate, heat generating thin film resistor bodies formed on the substrate and electric conductors for supplying the heat generating thin film resistor bodies with electric power, characterized in that the heat generatin...	08/10/1982
4329779	Methods of applying circuit elements to a substrate A method of applying microelectronic circuit elements, such as high definition thin-film microwave components, typically to a lower definition thick film or printed circuit board substrate. The method described involves the formation of a high definition ...	05/18/1982
4296309	Thermal head A thermal head of the present invention is composed of a substrate, a resistive heater element formed on the substrate, and electrically conductive members to supply electric power to the resistive heater element, wherein the resistive heater element cont...	10/20/1981
4232213	Thermal head A thin-film thermal head comprises a thin-film heat-generating resistor made of an alloy of Si and a high melting point metal such as Ta, Mo, Ti, W or Zr. Joule heat generated by supplying a pulse current to the thin-film heat-generating resistor is utili...	11/04/1980
4204107	Thick-film thermal printing head and method of manufacturing the same A thermal printing head which effects printing on thermally sensitive paper with Joule's heat generated by passing a current through a thick-film resistor is featured by the surface configuration of the thick-film resistor. In a cross-section perpendicula...	05/20/1980
4203119	Thermal printers Each thick film resistive print element of a thermal print bar operated in a scan mode is series connected to a thick film switch which sets a voltage threshold to isolate the element from periodic scan pulses unless coincident with an element selecting d...	05/13/1980
4203025	Thick-film thermal printing head Glass including 10-60% by weight of at least one metal oxide selected from the group consisting of Al2 O3, MgO, ZrO2, BeO and TiO2 is formed, as a heat-insulator, on a substrate. Plural pairs of electrodes, each...	05/13/1980
4168343	Thermal printing head A thermal printing head having a substrate and a resistive element formed on the substrate wherein said resistive element is a thin layer which is composed of an electrically conducting material and an electrically insulating material. This thermal printi...	09/18/1979
4149064	Method and apparatus for adjusting electrical networks consisting of synthetic foils A method and apparatus for adjusting an electrical characteristic of an electrical component of an electrical network which network comprises a stack of secured together foils or layers which include one or more synthetic foils each having a metal layer o...	04/10/1979
4105892	Thin resistor film type thermal head for printing on heat-sensitive paper A thin resistor film type thermal head for printing on heat-sensitive paper, wherein a thin film of Ta--SiO2 containing 7 to 53 mol% of SiO2 or a thin film of Ta--SiO2 --N containing 7 to 53 mol% of SiO2, molar ...	08/08/1978
4061814	Method and masking structure for configurating thin layers A method for configurating thin layers, particularly in thin film circuits, wherein a layer to be configurated is irradiated with an electron beam passing through a mask to obtain a configuration corresponding to the configuration of selected portions of ...	12/06/1977
4007352	Thin film thermal print head After the mesas are formed in the glass glaze over an aluminum oxide substrate by etching, and before resistive and conductive materials are deposited over the mesas by thin film techniques, an aluminum oxide underlayer is applied. The aluminum oxide unde...	02/08/1977

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Class 257/E49.004 - Thin-film or thick-film devices (EPO)