Abstract: A method of applying an embossing foil to a portion of flexible material comprises passing the material with the foil thereon over a substantial distance along a heated surface of a support member such as a roller. The material and the foil are jointly pressed against the heated surface of the support member, and thus against each other by a plurality of pressure rollers disposed at a spacing from each other along the heated surface. Apparatus for carrying out the method comprises an array of pressure elements such as rollers such that the rollers can be applied against a support roller in a progressive mode of actuation starting from the center of the pressure roller array and moving outwardly towards the ends thereof. The support roller is driven by a variable drive means or an adjustable-torque slipping clutch.

Abstract: Copper-lined laminates are formed by galvanically depositing a copper layer on a portion of at least one of two endless press bands arranged to define a reaction zone between two generally parallel sides thereof. After depositing of the copper layer, the press bands are moved through the reaction zone and resin impregnated plastic webs are also moved between the press bands in the reaction zone to form a laminated structure which is then stripped from the press bands to form the copper-lined laminates.

Abstract: A method of making printed circuits which comprises passing a non-conductive strip of material past a device which repeatedly imparts a desired circuit pattern onto the passing strip so that a succession of identical printed circuit zones are created along the length of the strip. The strip is subsequently wound into a coil which can be stored for use as desired when printed circuit assemblies are to be fabricated. Fabrication of an assembly comprises unwinding the strip from the coil and severing of the strip between the individual printed circuit zones. A backing can be joined to the unwound strip before severing.

Abstract: A microwave heating material and method of forming thereof is presented. In accordance with the present invention, a pre-selected metallized pattern is disposed on at least a portion of a dielectric material using a transfer process, preferably a hot stamping transfer process in conjunction with very thin metal, preferably aluminum roll leaf. The roll leaf can be easily hot-stamped in any variety of patterns such as dots, spirals, circles or any other desired pattern onto disposable or reuseable trays, flexible wraps, rigid substrates or any other suitable dielectric material. Such a transfer process is relatively inexpensive both in terms of labor and other costs.

Abstract: A polyimide embedded conductor process assures adherence of a metal conductor to a polyimide layer and allows closer spacing between conductors. The conductor is laid on a sacrificial substrate, and then the polyimide layer is laid over the conductor and substrate. The substrate is etched away to expose the conductor, and the polyimide layer may be etched away from the conductor to form attachment tabs.

Abstract: A method is disclosed for the preparation of a hot transfer film that is pre-cut and pre-positioned for continuous application during the forming of plastic articles by an in-mold decorating technique. A carrier film is first bonded to the transfer film from which the hot transfer is prepared, to form a releasable laminate. The laminate is then printed with appropriate decorating indicia on the free surface of the transfer film component thereof. Printing may be single-stage or multi-stage, depending upon the indicia desired, and a subsequent metalization of the transfer film surface may be performed.The fully printed laminate is then indexed into position and die-cut under conditions controlled to assure full penetration of the transfer film by the die, without penetration of the adjacent surface of the carrier film.

Abstract: A method is disclosed for the preparation of a thermoformable transfer film that may be pre-cut or is pre-positioned for continuous application during the forming of plastic articles by an insert molding decorating technique. A carrier film is first bonded to the transfer film from which the transfer is prepared, to form a composite. The composite is then printed with appropriate decorating indicia on the free surface of the transfer film component thereof. Printing may be single-stage or multi-stage, depending upon the indicia desired, and a subsequent metalization of the transfer film may be performed.The fully printed composite is then indexed into position and thermoformed to form the insert which later may be indexed directly into the mold chamber. The insert may be die-cut after its formation or prior to thermoforming.The present method facilitates the decoration of insert molded products in a manner which eliminates the need for conventional insert molding.

Abstract: A disposable food receptacle for use in microwave cooking is disclosed which includes a provision to brown the exterior of the food in the receptacle. A thin layer of an electrically conductive material, such as an elemental metal is incorporated into the receptacle on the food contacting surfaces thereof, so that the conductive layer will become heated by the microwave radiation and will, in turn, brown the exterior of the food in the receptacle. The conductive layer is formed as an extremely thin film deposited on a substrate protective layer by a process of a vacuum vapor deposition.

Abstract: An embossing foil includes a layer which can be written upon, together with a magnetic layer for data storage purposes. Between the magnetic layer and the writing layer, the foil has a layer with a barrier effect to prevent the writing layer from being attacked by solvent contained in the magnetic layer. The foil may further comprise between the magnetic and writing layers, a structure producing an optical diffraction effect such as a hologram, with the writing surface and said structure being so arranged that nonetheless said structure can still be read, including by machine.

Abstract: A hot embossing foil includes, besides a magnetic layer, a layer which has a structure producing a diffraction effect such as a hologram. The foil may also be provided with a signing layer which in the operational condition of the foil is at the exposed surface thereof to which writing can thus be applied, while nonetheless permitting detection of the diffraction-effect structure.

Abstract: The present invention contemplates fabrication of a printed circuit board blank having a predetermined pattern of pads and interconnecting conductive pathways, preferably (but not necessarily) flush with the face of the insulating substrate. To fabricate a finished circuit board of any desired circuit configuration, the printed circuit board blank is coated with a photoresist and exposed so that upon development of the photoresist and etching in accordance with the developed pattern, the interconnecting conductive pathways between pads will be selectively etched away so that only those interconnects for the desired circuit pattern remain.

Abstract: An embossing foil includes a signing layer which can be written upon, in conjunction with a layer having a structure giving an optical diffraction effect such as a hologram. The signing layer may be clear in the region over the diffraction structure or alternatively the signing layer, over the diffraction structure, may be of a patterned or grid configuration defining openings through which the structure therebeneath can be viewed. The foil may also include a magnetic layer for the storage of variable data which can be readily accessed.

Abstract: Methods and apparatus for providing fine line, high density multiple layer printed circuit board packages are disclosed. In the method for fabricating multiple layer printed circuit board package, a printed circuit board is formed having a conductive circuit pattern embedded in and integral with an insulator material substrate, such that the surface of the conductive circuit pattern is exposed along one surface of the substrate, and lays flush and coplanar with therewith. At least two of said boards are stacked with a layer of insulator material interposed between each pair of adjacent boards. The entire assembly is heat-pressed together to form a homogenous block of insulator material having conductive circuit patterns embedded and integrally molded therein.

Abstract: A method of transferring a retroreflective pattern onto a fabric, wherein a retroreflective pattern transfer sheet comprising a base film, a temporary holding adhesive, a mass of transparent fine glass spheres partially embedded into the temporary holding adhesive, and a reflective film layer which covers the exposed surface of the transparent fine glass spheres and the exposed surface of the temporary holding adhesive present in the gaps between individual adjacent transparent fine glass spheres, is superposed on the surface of a fabric coated with a compression bonding adhesive in a predetermined pattern, with the reflective film layer side put in contact with the fabric surface, the portion of the transfer sheet which is opposed to the compression bonding adhesive into bond with the fabric, an outer portion of the sheet is subsequently stripped off, whereby only the portion thereof which is in bond with the fabric through the compression bonding adhesive is allowed to remain on the fabric to form the retro

Abstract: This invention concerns a method for the manufacture of a printed wiring board which particularly proves useful as a printed coil. This method is characterized by the fact that in the work in process which has undergone the step for formation of a conductor circuit and which has not undergone the step for separation of a plating resist, the plating resist and other insulating substratal material are separated for transfer from the surface of the substrate having the conductor circuit formed thereon.Since this method permits formation of an extremely thin insulating layer and a conductor circuit layer thicker than the insulating layer, it enables production of very thin printed wiring board and printed coil having high circuit density in the surfaces of component layers as well as in the direction of superposition of component layers.

Abstract: Plated magnetic recording material, such as magnetic tape, composed of a thin layer of ferromagnetic metal and a base film layer are made by plating a passivated smooth continuous surface such as the surface of a cylindrical mandrel or an endless belt with a plate of ferromagnetic metal, applying the base film layer to the plated surface, and stripping the resulting laminated composite from the surface. The smoothness of the surface of the ferromagnetic metal layer depends on the smoothness of the continuous surface rather than on the smoothness of the surface of the base film stock.

Abstract: A process for producing a printed-wiring board is disclosed. The process involves providing a metal carried support surface and forming a resist pattern on the metal surface comprised of a silicone rubber material. The support surface where there is not resist is metal plated to provide metal plated surface portions which are contact bonded to a insulating base material by interposing an adhesive between the insulating base material and the metal surface portions or contact bonded to an uncured base material having an adhesive force. The contact bonding is carried out in order to transfer the metal surface portions onto the base material thus forming the conductor pattern on the base material and producing the printing-wiring board. The process eliminates the loss of expensive copper foil and provides a method by which the base material can be securely bonded to the metal portions forming the printed-wiring board.

Abstract: A method for fabricating supported fine line electrical conductors comprises the steps of forming a pattern (16) which defines a configuration (18) of the desired conductors on a surface (12), placing electrically conductive material on the surface in a configuration defined by the pattern to form electrical conductors (20), removing only the pattern from the surface and thus leaving the configured electrical conductors thereon, adhering a support (22) to the electrical conductors with an adherence which is greater than that existing between the conductors and the surface, and separating the assembled conductors and support from the surface. One of the surface and of the support and assembled conductors is flexible and the other is relatively rigid, so that the flexible one can be peeled away from the rigid other.

Abstract: The present invention relates to decorative imitation set jewels. A process for producing these imitation jewels is also disclosed.The imitation jewels are formed by causing a narrow margin of metal foil to adhere to the edges of a piece of a plastic film. The film may be cut by a heated die to any desired shape and may be of any color. The foil adhering to the edges of the plastic film gives the product an image of depth which is aesthetically pleasing. The rounding of the plastic film edge caused by the heated die enhances this effect.An adhesive backing is provided so that the imitation set jewels may be placed where desired. One envisioned utilization of the invention is for ornamenting one's fingernails.

Abstract: A method of producing a decorative foil transfer design which eliminates the need for heat and pressure in the application of decorative foil to a surface. The method includes applying a foil assembly sheet to a substrate, applying lacquer and extender materials and a photo-sensitive emulsion over the foil assembly, exposing the photo-sensitive emulsion to a light through a design-bearing film, removing all material which does not underlie the hardened photo-sensitive emulsion, applying an adhesive, and transferring the foil design to the surface to be decorated.

Abstract: A carrier (10) is vapor-vacuum deposited with a vapor-vacuum deposited first metallic layer (14) of 10-90 nm in thickness. The carrier and vapor-vacuum deposited metal layers are selected of materials which, after vapor-vacuum depositing, adhere with less than about 3 pounds per linear inch of width, e.g., aluminum and copper or copper and copper. A second metallic layer (16) is electrolytically deposited to the vapor-vacuum deposited layer to increase the thickness of the first and second metal layers, taken together, to about 1-12 microns. The carrier and first and second metal layers are bonded under heat and pressure to a dielectric substrate (18). Thereafter, the carrier is peeled away leaving the vapor-vacuum deposited and electrolytically plated layers adhered to the dielectric substrate.

Abstract: A TV bulb and method of manufacture are disclosed. A collector printing process is utilized for applying TV phosphor compounds with associated black background to the inner face of the TV panel. Also, an offset printing process is utilized for printing an acid resist ink on both sides of a TV aperture mask after it has been formed into an approximate spherical or cylindrical shape. Masks and panels produced in accordance with the present invention are interchangeable during bulb manufacture.

Abstract: A collector printing process is utilized for applying thermoplastic pressure-sensitive inks, corresponding to the color TV phosphors and the black matrix, onto the inner face of the TV panel. Separate inks, formed of inorganic pigments and a thermoplastic pressure-sensitive medium, are each separately patterned. The separate inks are then printed in registration onto a collector to form a composite pattern. Upon completion, the composite pattern is completely transferred to the TV panel by contact of the collector against the inner panel face to form the target.

Abstract: A glossy black reflective metal coating with improved durability is prepared as a film of an intrinsically blackened chromium-containing metal. A laminate may be prepared with the metal coating bonded to at least one transferable resin film. A particular laminate includes at least one top coat and at least one base coat, with the metal coating located in sandwich relationship therebetween.

Abstract: Low cost decorative award plaques are provided which use a plastic laminate article capable of being hot stamped with desired lettering or designs. The plaque is made by a process of repeatedly imprinting with different colors and surface effects. The process includes forming and cutting the plastic on a rigid backing, especially one simulating a fine, hardwood panel.

Abstract: Printed circuit boards have copper contact pads cut from copper foil and bonded to the circuit board, followed by printing circuit patterns of conductive ink on the board, the pattern connecting with the contact pads. The contact pads are cut from a copper foil strip fed with the circuit board beneath a die. Bonding of the contact pads follows, then printing of the circuit patterns. Boards can be formed from strip material in which case the individual boards are cut from the strip material.

Abstract: A method for making decorated battery casings wherein a thin walled plastic tubing such as of heat shrinkable material is cut to size, placed on a support member such as a mandrel, and is then decorated with a metallic foil decorative material by hot stamping. A transparent protective film coating is then placed thereon and the tube is heat crimped at one end. The casing is placed upon a cell or battery and heat crimped at the other end to complete the battery or cell encasing procedure. The procedure is particularly efficacious in providing metallic decorated plastic battery casings.

Abstract: A stamping foil for forming printed circuit patterns on insulating or poorly conductive substrates comprising an electrically conductive layer made of a highly conductive metal, such as copper, which is endowed with a sufficiently low shear strength, even in thicknesses of 10 microns or more, to permit easy and sharp separation of the activated (imprinted) and non-activated portions of the foil. Such a low shear strength may be achieved with fibrous or fibrous-granular crystallite structures, wherein the fibers are oriented approximately at right angles to the surfaces of the foil, and, in addition, by doping agents containing carbon, nitrogen and sulfur. The foil may comprise a bonding layer for bonding the conductive layer to a substrate, or such a bonding layer may be applied to the surface of the conductive layer before the stamping operation. The conductive layer may be either self-supporting, or it may adhere to a carrier tape through an intermediary separating layer.

Abstract: A process of making raised line imprinted display mounts utilizing a foam polymer sheet having a thin polymer laminate covering includes the step of selecting a foam polymer sheet having a thin polymer laminate covering. The laminate covering surface is foil stamped with a die under predetermined pressure at predetermined temperatures and for elected dwell time to produce a raised line imprinted lettering or designs on the surface resembling an embossed surface stamping.

Abstract: A desired decorative design on packaging such as tubes is made up of a combination of printed matter and a decorative foil such as a metal, pigmented or textured pattern foil. The method involves the steps of first applying the printed matter to the material with an ink treated to prevent adherence of the foil to the printed matter. Thereafter, the foil coated with an adhesive is positioned against the material and heat and/or pressure applied so that a foil transfer will occur onto all areas of the material engaged by the foil that are devoid of the printed matter. The foil is applied with a smooth continuous silicone pad. Exact registration is assured and the use of complicated die designs is wholly avoided.

Abstract: A method of constructing an inductive-capacitive (LC) network is disclosed in which a predetermined pattern is cut from a metallic sheet to provide a multi-turn, essentially spiral-like configuration in which a plurality of interconnecting regions are left between adjacent turns. A pre-laminate is then formed by laminating one surface of the configured sheet to a surface of a sheet of dielectric material. A completed multi-turn inductor is formed by a second cutting operation in which the remaining interconnecting regions between the adjacent turns are removed. The LC network is completed by laminating a second metallic sheet to a dielectric layer overlying the completed multi-turn inductor. The first and second cutting operations and assembly of the respective sheets are performed such that any burrs resulting from the operations are directed away from the interlying sheet of dielectric material, thereby avoiding problems due to shorting out between the two metallic sheets.

Abstract: A method for producing a composite foil which has metallic lustrous layer areas with an image structure for transferring onto a base, comprising(a) applying at least one continuous lacquer layer on a carrier layer;(b) applying a continuous metal layer onto at least one lacquer layer;(c) applying a solvent resistant layer onto the metal layer, said solvent resistant layer being divided into areas which have the shape of the image structure, leaving areas of the continuous metal layer and the at least one continuous lacquer layer thereunder uncovered by the solvent resistant layer;(d) removing said uncovered areas of the continuous metal layer and the at least one continuous lacquer layer thereunder by treatment with a solvent therefor; and(e) applying a continuous adhesive layer onto the image structure carrying side of the treated composite foil from step (d), which adhesive layer fills said removed areas between the image structure and covers said areas and said image structure.

Abstract: A method for producing a metalized paper or board product having a bright surface and improved scratch resistance, comprises a transfer metalization technique utilizing a tie coat applied to the metal layer and a pressure-sensitive, adhesive coat applied to the tie coat, the adhesive coat binding the metalized composite to the paper or board base. The adhesive coat is applied to the paper or board base in the dry state and in combination with the adjacent tie coat, forms a hard, stable bond with the base that favorably withstands subsequent deformation of the paper or board product. A top coat utilizing a particular solvent mixture, offers consistent wettability of adhesive release coats, and provides a smooth, continuous outer surface for the final product.

Abstract: Adhesive is applied to a substrate for a printed circuit board in a pattern corresponding to that of the printed circuit. If the adhesive is of the type which contains a solvent, the substrate and adhesive are heated after application of the latter in order to drive off the solvent. Subsequently, a thin foil of a material which is capable of bonding to a chemically deposited metal is pressed onto the adhesive. The adhesive is then permitted to set which causes those portions of the foil in contact with the adhesive to adhere tightly to the latter. Once the adhesive has set, the foil is peeled from the adhesive. The portions of the foil which contact the adhesive remain bound to the adhesive thereby forming a base which is capable of receiving a chemically deposited metal. The thus-coated substrate is immersed in a bath where an electrically conductive metal for forming the printed circuit is chemically deposited in a pattern corresponding to that of the adhesive and, consequently, of the printed circuit.

Abstract: An apparatus transposes a matrix of semiconductor pellets mounted on a first adhesive tape to a second adhesive tape in such a manner that the respective pellet rows are arranged spaced from the adjacent pellet rows. It has pellet-supporting means having an inclined plane and apical plane. The first adhesive tape bearing the matrix is carried stepwise along the inclined plane toward the apical plane to successively bring the respective rows of the matrix to the apical plane. Above the apical plane, a second adhesive tape is carried in a direction intersecting the pellet columns at right angles with the adhesive plane thereof facing the matrix. When each row mounted on the first tape is on the apical plane, the second tape is pressed against the row. Each time one pellet row is transposed to the second tape, the pellet-supporting means is shifted in a direction intersecting the pellet columns at right angles.

Abstract: A sheet of debossable plastic material is bonded to a backing plate, which may be a metal plate preferably pre-formed in a coin die. A polished surface on the edges of the metal plate projects beyond the plastic sheet material. The combined effect of the debossable plastic material, with a brushed metallic appearance, and the backing plate with polished edges greatly enhances an appearance of an engraved metal plate. This basic unit may be used in combination with other structures to form plaques, frames, name badges, and the like. When used in some combinations, such as a picture in a frame of the plastic sheet, for example, the components may be pre-assembled into a complete packet before attachment to a stand.

Abstract: A copper-clad laminate having special utility in the production of high resolution printed circuit patterns by either subtractive or semi-additive processing is made by vapor depositing a film of zinc on a copper film on a silica-coated aluminum carrier sheet, vapor depositing a silica film on the resulting zinc-copper foil, bonding the resulting body to a substrate and then stripping the silica-coated aluminum carrier sheet from the copper-clad laminate.

Abstract: A method is disclosed for predetermining the magnitude of the average release peel strength at the interface between a vapor deposited copper film and a flexible aluminum carrier sheet to which the copper has been previously directly applied. The resulting copper-to-aluminum adherence is due to the formation of a preferential diffusion bond.

Abstract: Small decorative plates for ornamental use, in particular for the decoration of textiles having an effective inner layer with at least one metallic layer, and two thermically activatable melt adhesive layers forming the outer layers on both sides.

Abstract: A process for preventing the counterfeiting of valuable documents through use of photography, photocopying techniques, or other methods of counterfeiting. The process includes laminating an extremely thin metallic film to the substrate of the valuable document before the document is printed with the area of the metallic film being small in comparison to the area of the document. The metallic film can be located anywhere on the face of the document and a "latent image" is embossed on the metallic film when the document is printed. Embossing the latent image on the metallic film, rather than on the document substrate, provides many advantages not possible in the prior art.A photocopy of a document containing the embossed metallic film does not include the latent image and a color photocopy will be different in color than the original document. Therefore, a lay observer can readily differentiate between a genuine document and a counterfeit document.

Abstract: Apparatus and process for hot-stamping molded plastic containers in which the container is moved past a heated die having a platen with a printing die, the die being universally movable so that linear uniform pressure is exerted between a confronting container surface and die surface. As the container moves across the die surface, it is rotated so that foil which is pinched between the container and die is transferred onto the surface of the rotatable container. The uniform linear pressure between container and die, transfers foil to the accompaniment of rotation of the container so that defect-free lamination of foil is transferred onto the container surface to form decorative or alpha numeric information. The operation is continuous, with successively spaced containers moving into printing position relatively to the die, where the hot-stamping operation is repeated. Containers are automatically removed after printing, and successive containers supplied either manually or automatically.

Abstract: A release film is coated with a thin layer of metal by, for example, a vapor deposition process. The film is then stretched over a composite object, made, e.g., of fiberglass-epoxy or graphite-epoxy, which one desires to metallize. A treatment involving either vacuum or pressure and that may involve heat is used to transfer the thin metal layer to the composite object. The stretchable film is then peeled off the object, leaving a metal coating bonded to the object. The epoxy resin or other adhesive in the composite material gives structural integrity to the object as well as provides a bond for the metal, so that the composite object may be molded and metallized in one step. Alternatively, a two-step process of molding then metallizing or metallizing then molding can be employed.

Abstract: A decal assembly of the type comprising a translucent sheet with indicia thereon and having an adhesive on the back thereof protected by a backing sheet, and a separate blank clear translucent sheet having adhesive on one side and a backing sheet thereover, the separate sheet being dimensionally larger than the indicia carrying sheet and adapted after the backing sheet on both the indicia carrying and blank sheets being peeled off to be placed adhesive to adhesive with the indicia sheet centered on the blank sheet, whereby the blank sheet forms a frame thereabout and the adhesive thereon is adapted to be adhered to the inside of a window and the like, or alternatively only the indicia sheet can be directly adhered on the external side of the window upon its back sheet alone being removed.

Abstract: A laminated construction having differential release characteristics is provided which will yield a self-detackifying adhesive surface upon delamination. The laminate is produced by coating a film of a polymeric material onto one side of a face stock material and then laminating this construction to an adhesive which has been coated onto a release liner. The release liner is removed and the remaining portion of the laminate is affixed to a suitable substrate utilizing the exposed adhesive surface. The polymeric material is chosen so that upon delamination of the face stock from the substrate, it remains affixed to the adhesive coating. This results in a self-detackified adhesive surface on the substrate. The laminate construction is useful for tags, labels, stickers, and the like as well as for sending credit, business, or membership cards on preprinted mailers to ultimate users.

Abstract: A method of producing electrical contacts on a Silicon Solar Cell comprises stamping contact shapes from a carrier with a metallic film or foil adhered thereto and applying the stamped out film or foil to the silicon surface to adhere thereto while removing the carrier therefrom.

Abstract: Radiation curable coating vehicles, suitable for transfer coating application and strippable from a variety of carrying webs, can be produced by proper selection of coating ingredients and cured either by actinic radiation or electron beams. Potential crosslink density (as herein defined), glass transition temperature and the relative presence or absence of specific adhesion-promoting functional groups are controlled to arrive at a coating composition having the desired degree of adhesion to the substrate to be coated and the carrying web which is to transfer the coating composition to that substrate.

Abstract: Method and apparatus for the metallization of support members, such as paper sheeting and other cellulosic products. A metallic film is transferred to the paper support from a plastic sheet carrier and adhered to the paper by a thermoplastic material. The carrier, typically of stabilized plastic with an adhered film of metal and an overlay of thermoplastic adhesive with the paper support. Pressure and/or heat is applied to the composite which is subsequently cooled and the carrier stripped away to leave the desired metallic layer on the receiving surface of the paper support.This transfer procedure overcomes the objections associated with metal foil laminates and is particularly suitable for metallizing support members, like paper, which are difficult to metallize directly because they release significant amounts of vapor during conventional vacuum metallization.

Abstract: A magnetic recording structure comprises (1) a substrate having an outer surface, and (2) a laminar magnetic recording piece disposed adjacent to at least one part of the outer surface of the substrate, the recording piece comprising a magnetic layer, a color layer and a non-magnetic metal deposition layer interposed between the magnetic layer and the color layer, the magnetic layer being closer to the substrate than the color layer.The non-magnetic metal deposition layer disposed on the magnetic layer has high hiding power and, even in the form of an extremely thin layer, can effectively hide the color of the magnetic material.Accordingly, this magnetic recording structure can be produced with a surface of a beautiful color without impairing its magnetic characteristics.

Abstract: A polygonally shaped, multifaceted rotary scanner comprising a plurality of optically flat, reflective surfaces on the facets. The reflective surfaces are integrally bonded to a multifaceted, polygonal base at precise angles to the axis of rotation by a replication technique in which each optically flat reflective surface is produced on the surface of a flat master preform, and the flat master preform is then accurately located in position at the precise angle relative to the base by contact with upper and lower facets of a master multifaceted polygonal fixture. The flat reflective surface is then adhesively bonded to the corresponding facet of the polygonal base (while the polygonal base is arranged concentrically between the upper and lower facets of the fixture) by the application of a small quantity of a liquid adhesive to the surface of the facet of the polygonal base. On hardening, the adhesive bonds the reflective layer of each master preform to the appropriate facet of the polygonal base.

Abstract: A copper-clad laminate having special utility in printed circuit board production because of its extremely smooth and virtually pinhole-free surface is made by vapor depositing a copper film on a layer of silica on an aluminum carrier sheet, electrodepositing a layer of copper on the film to form a foil, bonding the foil to a substrate and finally stripping the foil and substrate laminate from the silica-coated carrier sheet.