Showing papers on "Substrate (printing) published in 1976"

Method, apparatus and lead frame for assembling leads with terminals on a substrate

Abstract: Each lead frame in a continuous strip of lead frames is formed with opposed pairs of integral and subsequently removable aligning tabs for locating a substrate on the lead frame such that leads of the lead frame and respective terminals on the substrate are in alignment. The aligning tabs initially are formed in the plane of the lead frame and subsequently are bent out of the plane of the lead frame so as to project from the lead frame for the reception of the substrate therebetween. The substrate is placed between the projecting tabs in an inverted position with the terminals on the substrate resting on inner free end portions of the lead frame leads. The lead frame then supports the substrate for movement through a series of processing stations, including a lead-terminal bonding station and a tab-removal station, as the continuous strip of lead frames is indexed in successive steps from a continuous lead frame supply.

Heat transfer mechanism for integrated circuit package

Abstract: Heat is removed from silicon devices in an integrated circuit package by means of a thermal liquid material contained in a film mounted on the underside of a cover enclosing the integrated circuit device. The film is electrically non-conductive and the film with the enclosed thermal liquid material form a formable pillow such that after the chip/substrate are assembled, the cover with the film containing the thermal liquid material is placed over the substrate and sealed thereto in a manner such that the film comes into direct contact with the top of the chips mounted on the substrate. This provides a direct heat transfer from the chip through the film to the thermal liquid material out to the cover, which may be formed as a heat radiator.

Electrically conductive transparent laminated window

Abstract: An optically clear, electrically conductive, transparent coating on a substrate and a method of coating are disclosed. The coating comprises a first transparent layer deposited as TiO x on the substrate, where x preferably has a value within the range of 1.3 to 1.7, a layer of silver or gold deposited on the first layer, and a third transparent layer deposited as TiO x on the second layer, where x preferably has a value within the range of 1.3 to 1.7. The coating is deposited under vacuum in a partial pressure of oxygen on a rigid transparent substrate such as glass or a flexible plastic substrate and the resultant coated substrate used in electrically heated windows.

Mold coating of freshly molded articles

Abstract: A method of compression molding a special purpose coating or skin onto the surface of a freshly molded polymeric substrate, including the steps of: injecting a skin-forming material between the surface to be coated and the die forming that surface such that the substrate is hydraulically immobilized within the mold cavity during separation of the die from the substrate surface, and thereafter compression molding the skin-forming material over the surface.

Process for forming multi-layer coatings

Abstract: The present invention relates to a process for forming a multi-layer coating including at least two coating layers by performing the oven drying step at one time, which comprises coating at least partially the surface of the substrate with a powder coating composition, then applying a slurry paint composition comprising synthetic resin particles dispersed in an aqueous medium and then heating.

Process for producing a well-adhered durable optical coating on an optical plastic substrate

Abstract: A process for coating an optical plastic substrate, for example polymethylmethacrylate (PPMA), with a single layer coating for the purpose of improving the durability of the plastic, the coating being deposited by a low temperature plasma polymerization process.

Liquid crystal color display devices

Abstract: A liquid crystal color display device which comprises a first electrode; a first substrate whose surface has a property of orientating the molecules of a nematic liquid crystal parallel with said surface; a second electrode; a second substrate whose surface has a property of orientating the molecules of the nematic liquid crystal perpendicular to said surface; a nematic liquid crystal interposed between the first and second substrates; at least one polarizer; and a means whereby the birefringence of the liquid crystal cell is changed to display various colors.

Machine for applying patterns to a substrate

Abstract: A substrate to be patterned, such as a textile web, is moved past an array of nozzles with discharge orifices closely spaced from its surface, the substrate being firmly backed at locations confronting the nozzles by being drawn against a supporting conveyor or by being led around rollers. The nozzles are electromagnetically operated by needle valves, the valve needles being carried by membranes under substantially balanced pressures from the printing liquor and from a fluid such as compressed air. The electromagnetic coils are energized by a generator of short current pulses separated by a low holding current, the generator including two complementary power transistors in series with a coil winding. A dyestuff applicator carrying one or more of such nozzles may be transversely displaceable across the substrate, under the control of a programmer, between intermittent advances of the substrate in its longitudinal direction.

Coated superalloy article

Abstract: A protective coating is provided on gas turbine engine type superalloys comprising an interlayer adjacent the superalloy substrate a principal protective element of which comprises an aluminide of the basis metal of the substrate formed by the reaction of aluminum at high temperature with the substrate, and an overlayer comprising an MCrAlY-type coating where M is selected from the group consisting of cobalt, nickel and iron

Lucent electrographic sensor for determining planar coordinates

Abstract: An electrographic sensor for determining planar coordinates is described whereby graphical material to be analyzed may be placed beneath, or projected against, the rear surface of the sensor. This sensor is of particular value for placing on the face of a cathode ray tube. The sensor includes a rigid, optically transparent substrate having an extremely uniform, substantially transparent resistive layer applied to one surface, small electrodes in contact with the resistive layer and individual resistors connected between adjacent electrodes to produce a resistance network around the perimeter of the substrate. Means are provided to produce orthogonal electrical fields in the resistive layer whereby the contacting of the resistive layer with a conductive stylus produces voltage signals at the stylus which are proportional to the coordinates of the point of contact. The second surface of the substrate may be made translucent for projecting optical images thereagainst.

Ecg monitoring pad

Abstract: There is disclosed an ECG monitoring device for attachment to the skin of an individual, which device includes a plurality of electrodes for monitoring bio-skin potential disposed at suitable locations on a base or substrate. The device includes a first resilient sponge-like sheet, and a second resilient sponge-like sheet adhesively attached to the first sheet and having a plurality of openings formed therein. A number of electrodes are attached to the second sheet by an adhesive coating, with the connector elements of the respective electrodes in place in the openings and secured to lead wires for attachment to monitoring apparatus. The individual electrodes include an adhesive base surface that can be exposed upon removal of a cover structure which normally overlies a pre-gelled pad and said base surface. The adhesively coated base surfaces of the electrodes are used to affix the device to the patient.

Switch-proof label

Abstract: This invention relates to switch-proof labels useful for marking objects in a manner such that if one were to attempt to transfer the label to another object the label would be destroyed or defaced to such an extent that its transference would be noticeable. The label comprises laminate comprising a transparent or translucent outer sheet having an information containing pattern printed on its inner surface, said printed inner surface having a coating of pressure sensitive adhesive film coated thereon. The printed pattern has a lesser affinity for the outer sheet than the printed pattern has for the adhesive. The affinity of the adhesive for the surface to which the laminated label is adhered and to the printed pattern is greater than the affinity of the printed pattern for the outer sheet. In a preferred embodiment the free side of the adhesive film of the label is covered by a release sheet. Once applied to a substrate, if removal of the label is attempted, the label delaminates in a manner such that the outer sheet separates leaving at least a portion of the adhesive layer, having at least a portion of the printed pattern adhering thereto, adhered to the substrate.

Foams for treating fabrics

Abstract: Foams containing a functional textile treating compound for application to a substrate such as a fabric or textile. The use of foams enables the application in uniform manner of many functional compositions that can be used in the treatment of a textile fabric to improve its properties. The foam compositions of this invention generally leave the textile material essentially dry to the touch and thus require less energy consumption in drying and further treatment of the textile. The foams have a foam density of 0.005 to 0.3 gram per cc, and average bubble size of from 0.05 to 0.5 millimeters in diameter and a foam half-life of from one to sixty minutes.

Retroreflective transfer sheet material

Abstract: Retroreflective images are formed on garments and other substrates with a transfer sheet material that comprises a support sheet, a dense continuous monolayer of transparent microspheres partially embedded in the support sheet, and a thick transfer layer printed over a limited portion of the continuous layer of microspheres in an imagewise pattern. In use the transfer sheet material is laid against a substrate, the transfer layer adhered to the substrate, and the support sheet stripped away. The transfer layer remains in place and pulls the microspheres from the support sheet, leaving a sharply defined design that is retroreflective over the full area of the design.

Removal of thin films from substrates by laser induced explosion

Abstract: Selected portions of a thin film coating of metal are removed from an insulative substrate by directing a coherent beam of light energy from a laser at the coating, to heat the coating and cause the evaporation and entrapment of the substrate material at the coating-substrate interface. A positive pressure builds up at the interface resulting in an explosion which removes the coating material.

Aqueous coating composition

Abstract: The aqueous coating composition, which is particularly adaptable for use as a household floor polish or a temporary protective coating for various articles, contains a non-volatile, solid film former, such as an acrylic copolymer, dispersed in the aqueous phase or base, and a water-soluble, acid-base indicator, such as thymolphthalein, which is colored at a pH above a predetermined level and is colorless at a lower pH. Upon being applied on the surface of a substrate, a substantially colorless film is formed thereon upon the evaporation of the water and the color indicator becomes an integral part of the dried film. Upon the application of an aqueous alkaline cleaning or stripping solution having a pH above that required to effect a color change of the color indicator, (e.g., above about 11.6 when thymolphthalein is used), the film changes to a distinctive color (e.g., blue when thymolphthalein is used) so that one can readily observe whether the old film has been completely removed before the surface becomes dry. The film former can include optional ingredients, such as a wax, an alkali-soluble resin and a permanent plasticizer to improve the wear resistance and finish properties of the resultant film. The coating composition can also include fugitive plasticizers or coalescing aids to facilitate the formation of a smooth, continuous protective film.

Optical fiber ribbon cartridge connector

Abstract: Two groups of optical communications fibers are optically joined within a single cartridge that receives and abuts two optical fiber ribbon end arrays. A two-piece connector consisting of a substrate with fiber-receiving grooves and a mating cover houses the fibers. In turn two such connectors are contained within the cartridge, either in a tight fit requiring no retaining means or a loose fit requiring set screws to retain the two connectors in abutting relation. Variations of the basic hardware provide both a rearrangeable splice and a permanent splice. Several cartridges may be housed in a fixture to accommodate the several layers of a multi-layer optical fiber ribbon cable.

Apparatus for application of foam to a substrate

Abstract: Foam applicator heads for the application of a functional chemical treating composition in the form of a froth or foam to a substrate, such as a textile or fabric. The apparatus enables the uniform application in foam form of many functional chemicals composition that are to be used for treatment of the substrate in such manner as to leave the treated material essentially dry to the touch when the treating substrate was initially dry to the touch.

Circuit board and method for producing same

Abstract: There is disclosed a method for producing an electrical circuit board comprising the steps of selectively treating a portion of a conductive metal sheet in a pattern substantially corresponding to a predetermined printed circuit configuration and in a manner which renders the pattern portion of the sheet essentially adherent to a resin, placing the treated pattern portion of the sheet in direct contact with a layer of resin on the surface of an insulating substrate to form an assembly, uniformily heating the assembly to an elevated temperature to selectively bond the substrate to the treated pattern portion of the sheet, cutting the sheet along the perimeter of the pattern portions and stripping the non-pattern portions of the sheet from the substrate to form a circuit board.

Method of producing semiconductor device

Abstract: A method of producing a semiconductor device comprises removing all of the masking films used for forming desired semiconductor regions in the substrate, newly forming a first insulation film and selectively forming a second insulation film on predetermined portions of the first insulation film by the use of a polycrystalline silicon film as the mask.

Electrolyte reservoir for a fuel cell

Abstract: An electrolyte reservoir layer disposed behind and adjacent one of the catalyst layers of a fuel cell is a porous, hydrophilic material. Excess liquid volume wicks into the reservoir layer through the catalyst layer and fills the smaller pores within the reservoir. The larger pores remain empty and provide clear passageways for the reactant gas to reach the catalyst. Wetproofing of the reservoir layer is not required. In a preferred embodiment the reservoir layer is the electrode substrate whereby the catalyst layer is bonded to the surface thereof.

Method of applying a layer of silica on a substrate

Abstract: Substrate surfaces are rendered resistant to coking by vaporizing an alkoxysilane in contact with the surface to form a protective layer of silica thereon.

Vacuum deposition methods and masking structure

Abstract: A coating of a perfluoropolyether compound is applied to surfaces for inhibiting the deposition of a source material by evaporating or sputtering within a vacuum, and for the deposition of such material onto irregular surfaces, voids, or holes of an object. The coating can be applied by evaporating and then condensing the compound within a vacuum, or it can be applied as a fluid or thixotropic paste through direct contact by means such as a printing process. The coating can further be applied by spraying, or by spinning the surfaces about an axis with the fluid forming a thin coating through the action of centrifugal force. Selected portions of the coating can be removed so that the material is deposited in predetermined patterns. One method of removal is by dissolving the compound in a solvent. The coating can also be removed by selective evaporation in which a laser beam or an electron beam is directed across the surface. The beam evaporates the coating along a predetermined path whereby source material is subsequently condensed onto the substrate along this path. The vapor stream of material is reflected from surfaces coated with the compound so as to deposit onto surface portions of the object which are not in a line of sight with the source.

Elastic surface wave filter

Abstract: An elastic surface wave filter having a substrate of piezoelectric material and input and output transducer electrodes of interleaved-comb-type rigidly mounted on one surface of the substrate. The substrate is steadily supported in position within a casing by means of elastic support means which are made of synthetic or natural rubber material and which support means not only act as supporting instruments for the substrate, but also as vibration absorbing instruments for substantially suppressing unnecessary wave propagation through the substrate.

Charge electrode array and combination for ink jet printing and method of manufacture

Abstract: A charge electrode array for use in an ink jet printing apparatus is formed by anisotropic etching of apertures through a single crystal silicon substrate of (110) orientation. Conductive diffusion layers in the walls of and adjacent to the apertures permit a charge to be placed on a jet stream passing through the apertures. Contacts can be formed on the adjacent diffusion layers to provide connection to an externally located charging circuit or the contacts may be omitted when the charging circuit is formed in the substrate itself and connected by diffusion or a metal layer to each adjacent diffusion layer. Jet nozzles and synchronization electrodes are shown incorporated in the charge electrode array to form a monolithic structure capable of performing a plurality of functions. Substrate contacts are also provided for biasing.

Thin walled protective coatings by electrostatic powder deposition

Abstract: A process for producing thin walled coatings on elongated substrates by the electrostatic application of two superimposed layers of powder material is disclosed. The process comprises the steps of applying electrostatically a first layer of fusible powder material to an elongated substrate, at least partially fusing such first layer of powder material to provide a uniform coating on the elongated substrate, holding the at least partially fused coating at an elevated temperature below the full fusion temperature of the powder material to be applied as the second layer immediately prior to the application of such second layer, applying electrostatically a second layer of fusible powder material to the first layer, and fusing the total applied coating to achieve the desired coating thickness.

Method for protective film lamination with curl control

Abstract: A method for controlling curl in laminating a protective film having a heat-softenable adhesive surface onto a relatively flexible substrate document, in which the adhesive surface of the film is heated, the film and the substrate are then passed between two pressure rolls, and the laminate thus formed is maintained in contact with the pressure roll that engages the substrate through an appreciable arcuate distance after the laminate clears the other pressure roll to control longitudinal curl. The pressure rolls engaging the substrate and the film may be of convex and concave configuration, respectively, to minimize transverse curl. Radiant heating is preferably employed, together with limited pigmentation in the adhesive portion of the film.

Method of growing epitaxial semiconductor films utilizing radiant heating

Abstract: A method of growing epitaxial semiconductor films on substrates is proposed which consists in that a substrate is cleaned from damage layers and heated to a critical epitaxy temperature simultaneously by irradiating a substrate surface with an intensive luminous flux. A source material for growing a film is introduced to the substrate in a gaseous state. When producing multi-layer semiconductor structures, a substrate surface opposite to a surface exposed to the luminous flux is cooled to a temperature sufficient to prevent mutual diffusion between the film and the substrate materials. Versions of an apparatus for carrying this method into effect are also proposed. The apparatus includes a quartz chamber with a vaporizer for vaporizing the source material for film growing, a means for supporting the substrate and openings for introducing a neutral or reducing agent. The apparatus is provided with furnaces for heating the walls of the chamber. Each apparatus has a powerful light source disposed outside the chamber so as to face a working surface of the substrate support.

Photoinitiator free inks and method

Abstract: Photoinitiator-free inks and a method of producing printed and varnished surfaces are provided by depositing a base film or printing on a substrate and depositing, wet-on-wet, a protective varnish or top coat after which the multilayers are exposed to an energy source, preferably to electromagnetic radiation, to simultaneously cure the varnish and ink on said substrate.