Abstract: This invention provides an optical disk whose recorded information cannot be easily copied to other recording media, with practically no degradation of strength. The optical disk of this invention has a ring-shaped signal layer made of radiation curable resin on a transparent substrate, a reflective layer formed on this signal layer, and a protective layer formed on this reflective layer; moreover, the above mentioned signal layer has a peel strength against the above mentioned transparent substrate in the range of about 20/100 to about 80/100 according to the JIS-K5400 test method; and if the outer and inner diameters of the mentioned signal layer are represented by Os and Is respectively, the outer and inner diameters of the mentioned reflective layer are represented by Or and Ir respectively, and the outer and inner diameters of the mentioned protective layer are represented by Op and Ip respectively, these diameters satisfy the relationships,Os<Or<OpandIp<Ir<Is.

Abstract: Containers use in the storing, dispensing, packaging, and/or portioning of food and beverage products. The disposable and nondisposable food and beverage containers are manufactured from aggregates held together by organic binders in order to be lightweight, insulative, inexpensive, and more environmentally compatible than those currently used for storing, dispensing, packaging, or portioning such products. The food and beverage containers of the present invention are particularly useful for dispensing hot and cold food and beverages in the fast food restaurant environment. The structural matrices of the food and beverage containers include a hydrated organic binder paste (formed by mixing the binder with water) in combination with appropriate aggregate materials, such as fibers to add flexibility and strength, glass spheres to make the product more lightweight and insulative, or clay to make the product extremely inexpensive yet strong.

Abstract: A mold is for molding DVD discs to be joined together, back-to-back, to make a single disc. The mold includes a movable moldhalf and a stationary moldhalf. On one of the half-molds an inserting block extends a small distance into the mold cavity, so that the central part of the cavity is thinner than the outer part. The inner part and the outer part correspond approximately to the outer information band and the inner portion of the disc which is grasped. The mold is preferably used in a method using first a lower compression force during resin injection and then an increased force.

Abstract: Method and apparatus for forming a first and a second component disk which are bonded together to produce a bonded composite disk, wherein a first mold for forming the first component disk includes first mutually concentric components cooperating to define a molding surface for forming a bonding surface of the first component disk, while a second mold for the second component disk includes second mutually concentric components cooperating to define a molding surface for forming the bonding surface of the second component disk, and wherein the first mutually concentric components are dimensioned such that at least one of first annular boundaries between adjacent ones of the first mutually concentric components, which boundaries are located on the molding surface, has a diameter different from that of the corresponding second annular boundary between adjacent ones of the second mutually concentric components.

Abstract: A method for manufacturing a hinged sheet having an inorganically filled structural matrix includes mixing together a water-dispersible organic polymer binder, an inorganic aggregate material, a fibrous material, and water in order to form a moldable inorganically filled mixture in which the components therein are substantially homogeneously dispersed. The inorganically filled mixture is formed into a substantially hardened sheet having an inorganically filled matrix in a manner such that the water is removed by evaporation. The sheet is then scored to form a hinge in the inorganically filled matrix. Alternatively, a score can be pressed into a surface of the sheet prior to drying in order to form a scored sheet which is then dried.

Abstract: A disc molding die includes a stationary-side mirror block disposed on a stationary die, a movable-side mirror block disposed on a movable die and facing the stationary-side mirror block so as to define a cavity in combination with the stationary-side mirror block, and a cavity ring disposed on the radially outer side of one of the stationary-side mirror block and the movable-side mirror block so as to define the outer circumferential edge of each disc substrate. The portion of the cavity ring facing the cavity is roughened. When resin is charged into a cavity, very small spaces are formed between the resin and the inner circumferential surface of the cavity ring, due to the roughened portion of the cavity ring facing the cavity. Therefore, the release resistance during die opening or releasing can be decreased.

Abstract: An optical disk records digital information in optically-reflective layers that each vary in thickness between constructive interference of a monochromatic light and destructive interference of the said monochromatic light. The difference in the intensity of a reflected light beam subjected to interferometric constructive and destructive interference is used to communicate digital data from the optically-reflective layers and a detector. The optical disk provides for multiple layers of digital information that are tuned for interferometric response at correspondingly different monochromatic wavelengths of light. Another embodiment of the present invention is a mass-production process for making such an interferometric optical disk. Another embodiment of the present invention is a variation that includes layers that are emitting or absorbing depending on dopants.

Abstract: A process of manufacturing the optical discs by injection molding includes compulsive forced cooling of the molded discs, carried out after sputtering to shorten the cooling time in the mold, in consideration of keeping the replication errors in the pits on the molded discs. The process also includes metallizing the surface of the molded discs by sputtering (to make laser beams reflect). UV resin coating for protecting the metallized surface of the discs, and inspecting the pits for replication of information signals quality.

Abstract: A process for producing high-density thin type optical disk substrates having good replicability and birefringence sufficient for practical use. In filling the resin into the cavity, the stress on the resin is reduced by controlling the relation of the cavity width and the injection compression force to reduce birefringence. Further, the mirror surface of the mold is maintained at a certain temperature to facilitate the resin flow and a good replicability and reduction of birefringence is achieved by terminating the resin filling and starting the compression process at the time at which the pressure of the resin filling is at a minimum.

Abstract: An optical disk formation member has a center and an outer periphery. A tracking guide groove formation portion and a prepit formation portion are provided on the member. A first land plane on an internal peripheral side of the prepit formation has a depth that is different from a second land plane on the external peripheral side of the prepit formation portion. The second land plane, furthermore, is deeper than the first land plane on the internal peripheral side of the prepit formation portion.

Abstract: A method for providing compact discs with an antipiracy marking and a mold for pressing compact discs for making compact discs carrying an antipiracy marking as well as compact discs comprising an antipiracy marking pattern, the compact disc consisting of a substrate including on one of its sides the information to be read by the compact disc player and on the opposite side an antipiracy marking pattern.

Abstract: A method for producing a wall, roadway, sidewalk or floor of cementitious material having the appearance of natural stone and mortar including a base with an outer surface with a plurality of irregular shaped protrusions disposed in a random pattern to simulate natural stones and a plurality of simulated grout lines formed therebetween, the method including the steps of preparing a cementitious material, pouring the cementitious material into a form, vibrating the cementitious material, allowing the cementitious material to cure forming the base with the outer surface, releasing the base with the plurality of irregular shaped protrusions disposed in the random pattern to simulate natural stones and the plurality of simulated grout lines formed therebetween from the form, coloring the outer surface and accenting the plurality of simulated grout lines.

Abstract: An optical disk records digital information in optically-reflective layers that each vary in thickness between constructive interference of a monochromatic light and destructive interference of the said monochromatic light. The difference in the intensity of a reflected light beam subjected to interferometric constructive and destructive interference is used to communicate digital data from the optically-reflective layers and a detector. The optical disk provides for multiple layers of digital information that are tuned for interferometric response at correspondingly different monochromatic wavelengths of light. Another embodiment of the present invention is a mass-production process for making such an interferometric optical disk. Another embodiment of the present invention is a variation that includes layers that are emitting or absorbing depending on dopants.

Abstract: An arrangement is provided for a method of manufacturing optically readable discs in which a substrate is placed on a movable substrate carrier and by moving the substrate carrier it is subsequently placed in a centered position on a previously applied amount of replication material on a mold. In this position the substrate is fixed to the mold, after which the substrate carrier releases the substrate and the replication layer in the structure zone is solidified.

Abstract: Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and void spot free cement lining, a calcium alumina cement is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating and then cured in a high humidity environment.

Abstract: Compositions and methods for manufacturing containers from sheets having a hydraulically settable matrix. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers, and rheology-modifying agents) which impart predetermined properties so that a sheet formed therefrom has the desired performance criteria. Hydraulically settable sheets are formed from the mixture by extrusion, then calendering the sheets using a set of rollers and then drying the sheets in an accelerated manner to substantially harden the sheets. The resulting hydraulically settable sheets may have properties substantially similar to sheets made from presently used materials like paper, cardboard, polystyrene, or plastic. The sheets can be laminated, corrugated, coated, printed on, scored, perforated, cut, folded, rolled, spiral wound, molded, assembled and seamed to mass produce articles of manufacture from the sheets such as food and beverage containers.

Abstract: A roll-shaped mold for forming an information recording medium has a pattern forming layer formed into a film on a roll-shaped mold substrate and having a pattern for formation of a groove for a track on a resin substrate for the information recording medium by heat molding on the circumferential wall of the pattern forming layer.

Abstract: Resin, typically polycarbonate is injection molded into a disc substrate under select conditions, for example, at a mold temperature of 100-160.degree. C., an injection velocity of 100-120 g/sec., and a pressure of 10-60 kg/cm.sup.2, such that the birefringence of a radially inner portion of the substrate is higher by about 15-50 nm than the remaining substrate. A center hole is perforated in the substrate and a hub is attached to the substrate around the center hole. At the end of hub attachment, the substrate has a uniform distribution of birefringence over the entire area. Any increase of DC modulation is thus avoided.

Abstract: A process for producing and curing hydraulic material to reduce its hydrophilic characteristics and increase its strength. By preventing water loss and by adding water, efflorescence is controlled and the number of and size of voids created by water evaporation and hydration are reduced. Controlling the cure environment, humidity, temperature and pressure and using fluid barriers and water, control the physical and chemical composition formed during curing. The controls can be used before and/or after the initial set or shape formation of the hydraulic material.

Abstract: The present invention provides a process using a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value of b/a of greater than 1 when the length of the preformat pattern in the direction parallel to the direction in which the resin sheet is transported is defined as a and the length in the direction perpendicular thereto as b.

Abstract: An apparatus and method for producing an optical recording medium or an optical recording medium substrate sheet forms an photo-curable resin layer on at least one of a substrate sheet and a stamper which undergoes elastic deformation. The stamper bears a pattern corresponding with preformatting information and is brought into close contact with the substrate sheet wherein the photo-curable resin layer is interposed between them and cured.

Abstract: An insulated mold insert is provided for injection molding compact disks and optical disks. The mold insert is removably located in the mold cavity behind the stamper. The mold insert has an insulation layer retaining heat at the molding surface, thereby increasing surface smoothness of the molded part. The insert may have a metal surface for contacting the back side of the stamper.

Abstract: A process for manufacturing a substrate sheet for information recording mediums using a roll stamper including a flexible stamper member having a pattern corresponding to a preformat for an information recording medium, a first fixing member and a second fixing member integrally joined to both ends of the stamper member, and a pair of fit grooves capable of fittingly receiving the fixing members and formed in the periphery of a specular roll substrate in parallel to the axial direction of the specular roll substrate. The fixing members are fitted to the fit grooves so the stamper member is fixed along the periphery of the specular roll substrate between fit grooves. The first fixing member has a first member with a coefficient of linear expansion substantially equal to the coefficient of linear expansion of the stamper member and a second member having a larger coefficient of linear expansion than the coefficient of linear expansion of the first member.

Abstract: A method of fabricating a concrete floor having an autogenous hard high gloss finish that does not require further coatings includes pouring a designed concrete mix to establish a slab having an upper surface slightly below the level determined for the finished floor. A finishing floor surface layer is created by applying an amount of a dry shake dressing material containing quartz crystals and a coloring agent, but no coarse aggregate, to the upper surface of the slab and floating the surface until the finishing layer reaches predetermined amount which cures to form a generally monolithic structure with the slab but having a higher compressive strength when fully cured. Necessary expansion joints are provided. The floor is coated with a curing sealer and allowed to cure for approximately 30 days, or until it reaches a predetermined compressive strength. The sealer material is removed and the expansion joints are sealed.

Abstract: A method for preparing a substrate sheet for an optical recording medium has the steps of controlling a roll stamper having a preformat pattern on the peripheral surface thereof and a molding roll disposed with a predetermined gap between the same and the roll stamper so that they have a predetermined temperature, feeding a thermoplastic resin heated to a predetermined temperature to the gap from a means for extruding the thermoplastic resin disposed on the upstream side of the gap, while the roll stamper and the molding roll are rotated at a predetermined rotational frequency, and then molding the thermoplastic resin into a sheet by pressing the resin between the roll stamper and the molding roll to transfer the preformat pattern to the resin.

Abstract: In the optical disk manufacturing method a clamping plate is placed in the cavity of a disk body and the disk body is heated and compressed to connect the clamping plate to the disk body. Prior to connecting the clamping plate, a groove is established around the perimeter of the clamping plate. A disk body with or without a groove has its target surface compressed by a heat press while a region outside the target surface perimeter is pressed by an upper pressure surface to connect the clamping plate without creating a protrusion from the upper surface of the disk.

Abstract: Tooling for facing a wall includes a plurality of cavities which are formed by four blades, each of the cavities corresponding to various brick sizes. Six lines of interconnected cavities are attached to a cross beam. Adjacent cavities and lines are spaced from another by a predetermined dimension. Unset settable building material is mixed with appropriate coloring and waterproofing agent and is applied to a wall to form an outer layer. The surface thereof is sponged to produce a brick like surface relief. The tooling is pressed into the outer layer to impress a pattern resembling brickwork. Unset material is sucked from the joint line space between adjacent cavities and the layer is allowed to set. Then, mortar is added to the joint line. Once the mortar has set, the final outer layer has a true brick finish that resembles a real brick wall. The unset settable material can be applied to damaged or wood walls so that a true brick finish can be given to a wall in a quick, simple and cost effective manner.

Abstract: Process for the formation of a removable surface area of a specific depth on a substrate with all coatings seated on the surface of the substrate, wherein a layer of a material, thin as related to the substrate, with a thermal expansion coefficient strongly deviating as compared with the substrate, is bonded to the substrate at one temperature and is subsequently cooled to another temperature.

Abstract: A method of producing replicated paving stone including a base having a shaded and stratified layered upper surface with a plurality of simulated grout lines formed therein including the steps of preparing a cementitious mortar, applying a release agent to the interior of a forming mold, pouring the cementitious mortar into the forming mold, leveling the mortar, vibrating the forming mold and cementitious mortar therein, allowing the cementitious mortar to cure forming a base with an upper surface, releasing the base from the forming mold, applying an acid stain to the base, allowing the acid stain to etch the base to shade the upper surface, accenting the plurality of simulated grout lines with a pigment and sealing the replicated paving stone with an acrylic polymer sealer.

Abstract: A method of applying porous building plates includes applying plate-like porous building plates having pores on the surfaces and then jointing them by means of a coated joint method. In the method, the pores on the surfaces of the porous building plates are packed with an acid soluble substance and then the plates are joined by means of a coated joint method. Subsequently, the surfaces of the porous building plates are washed with an acid.

Abstract: A method for molding a substrate sheet for an optical recording medium by transferring a preformat pattern from a molding roll to a resin sheet molded by melting and extruding a resin. The molding roll has a roll base, a stamper detachably fixed on the peripheral surface of the roll base, and a resin layer interposed between the roll base and the stamper.

Abstract: A new compact disk ("CD") is formed providing a bright, metallic presentation of indicia such as trademarks, promotion and advertising copy and other alphanumeric information around the circumference of the disk with recorded digital data in the disk's central portion. Such a CD may be a 120 mm CD including a central portion recorded in the 80 mm format of a single CD, with the desired indicia formed by a bright metal indicia-bearing substrate in the 20 mm, radially-extending, circumferential portion of the CD that surrounds the recorded digital data.Such CD's are manufactured by recording the digital data in the central 80 mm of a 120 mm master, leaving the remaining unrecorded circumferential portion of the master with a smooth surface and applying the desired indicia onto the unrecorded outer peripheral portion of a disk used to form production stampers.

Abstract: A method of patterning a concrete surface and a pattern transfer mat for use in the method. The pattern transfer mat has a transfer surface having three-dimensional irregularities and carrying a multiplicity of grains to be transferred to the substrate concrete. Concrete is cast against the transfer surface of the mat and cured in situ and the mat is then detached.

Abstract: A patterned tool and method for producing a durable tactile warning surface for sidewalks and other walkways including pouring a concrete base, applying pigmented or colored hardener to the upper surface of the concrete base, stamping the upper surface of the concrete base with the patterned tool including a substantially flat member having a plurality of symmetrically disposed recesses of a predetermined diameter and depth formed on the lower surface thereof and a plurality of corresponding vent channels formed through the substantially flat member in communication with each corresponding recess and curing the concrete base to form a durable tactile warning surface including a plurality of symmetrically disposed raised elements of a predetermined diameter, height and spacing corresponding to the plurality of recesses to produce an uneven surface visually contrasting with adjacent surface areas.

Abstract: The occurrence of efflorescence has been reduced or eliminated in ceramic articles formed from a novel vitreously bonded cement-containing composition. The articles also exhibit improved strength, reduced firing shrinkage and increased frost resistance. The articles are produced by combining hydraulic cement containing calcium silicate and/or calcium aluminate components, vitrifiable inorganic powders forming molten liquid-flowing substances, and reactive or sinterable mineral powders selected from the group consisting of magnesium silicates, aluminum silicates and mixtures thereof; combining the ingredients with water to form a mixture; molding the mixture into an article; hardening the article by hydration; and firing the molded article to a maximum temperature of between about 1000.degree. C. to 1400.degree. C.

Abstract: A method of protecting, renovating, or restoring a stone structure comprises treating the stone structure with a solution that includes an aliphatic isocyanate and one or more organic solvents inert to the aliphatic isocyanate, the aliphatic isocyanate being cured by exposure to moisture.

Abstract: The present invention is a contoured wall and method for creating the contour and appearance of a wall formed from individual assembled units such as stones. The wall is formed from a plurality of interlocking wall portions that each have at least two non-linear mating surfaces. Each of the wall portions further has a lateral face contoured to resemble the stone wall. The wall is formed from hardenable construction material such as concrete poured between two mold members. Each of the mold members has a lateral mold face with at least one of the lateral faces having a plurality of interlocking contoured relief portions to provide a molded surface having the contour of a stone wall. In one embodiment, at least one of the mold members includes a plurality of individual form liners, or mold modules, each of which includes two non-linear mating edges and a lateral relief mold face.

Abstract: A method of producing extruded ceramic products by extruding a ceramic forming material through an extruding opening, includes a step of coating a liquid, which is nonvolatile at ordinary room temperatures, on a surface of an extruded ceramic product. The liquid is preferably coated on the surface with the aid of capillary action. An apparatus for producing extruded ceramic products includes a forward end portion having an extruding opening for extruding a ceramic forming material and a guide passage for introducing the ceramic forming material into the extruding opening, a liquid supply section provided on the forward end portion for supplying a liquid, which is nonvolatile at ordinary room temperatures, to an outer surface of a product of the ceramic forming material extruded from the extruding opening, and a liquid supply device for supplying the liquid to the liquid supply section.

Abstract: Gypsum-containing boards, uses for these boards, and methods for making them are provided. The board includes a set gypsum core having a fibrous glass at disposed thereon. The core includes a water-resistant additive in at least a minimum amount sufficient to impart to the board an ASTM C-473 water absorption value of less than about 10%. This additive includes organohydrogenpolysiloxane resin added with a portion of the mixing water, or otherwise added in neat form to the process for preparing the slurry.

Abstract: A method is provided for forming machinable ceramic compacts, which are in the unfired, preconsolidated condition. The method of this invention adds the binder to the ceramic powder mixture after the compact is formed by compaction, as opposed to conventional practice wherein the binder is added to the mixture prior to compaction. The unfired ceramic compacts which are formed by the method of this invention are characterized by high strength, excellent durability and enhanced machinability.

Abstract: A steel reinforced cement product having substantially increased strength made by: positioning prestressed reinforcing steel in a mold cavity; providing a cementitious mixture in the mold cavity about the reinforcing steel in an amount sufficient to fill the mold cavity to a predetermined extent; curing the reinforced cementitious-steel composite article in the mold; drying the article; applying a glaze to the surface of the dried article; burning the glaze; cooling the burned, glazed article, whereby reducing the strength of the composite article; hydrating the reduced strength composite article; and then recurring the thus produced article.

Abstract: A depositing method of wall concrete, in which unset concrete is deposited in a form, includes the step of disposing a non-hygroscopic soft sheet which has a large number of hollow projections or ridges on an inner surface of the form being deformable when lateral pressure is applied thereto by the hardening of the concrete.

Abstract: A formwork for a draft tube which includes ganged precast forms, each precast form corresponding to a curved segment of the draft tube. The precast forms are molded with continuous side plates extending thereabout and anchored in the precast concrete form and projecting beyond the surface opposite to the contact surface to provide a flange. A fastening means for attaching adjacent forms with a space therebetween to allow for stripping. A method includes determining the outline of the inner surface of the draft tube and dividing it into segments and preparing molds to make precast forms corresponding to each segment. The precast forms are assembled and shored to provide the draft tube ganged formwork, and concrete is poured about the draft tube formwork and is cured. The precast forms are stripped from the set concrete structure and reused in another draft tube formwork.

Abstract: A pottery bowl with an integral catch tray. The process of forming the pottery bowl includes molding a bowl with a thickened sidewall adjacent to the bottom thereof. The bowl is then placed on a potter's wheel and a shaping tool is inserted into the thickened portion to form an integral catch tray. The shaping tool for forming the catch tray preferably has a rounded tip from which a stream of water is emitted.

Abstract: Iron pipe and other hollow articles are lined with a cementitious mortar containing a quantity of polymer particles and the pipe is rotated about its axis so as to stratify the mortar and develop a polymer rich inner surface that is subsequently cured, dried and heated to the polymer fusion temperature and then coated with a continuous layer of pure polymer.

Abstract: After a mortar layer is formed on the surface layer of placed concrete, an ultrasonic vibrator is caused to vibrate while being pressed against the mortar layer surface, and a thin surface layer is scraped off, obtaining a dense water-shielding layer. Mortar with a low water-cement ratio is spread onto the surface of the water-shielding layer, and adhesion between the mortar and the water-shielding layer is strengthened by using the ultrasonic vibrator. The pressing force of the ultrasonic vibrator is then increased to make the mortar and the water-shielding layer densely integrated together, thereby forming a hard concrete surface excelling in abrasion resistance.

Abstract: A process for applying a permanent filled engraved identification to the surface of an object such as a paving brick which is made of porous material.

Abstract: A method of manufacturing corrosion-resistant concrete or mortar wherein a peelable film is formed on the inner surface of a formwork, and one or two paints of asphalt, tar, and thermosetting resin paints, or resin mortar using a thermosetting resin as a binder is coated on the peelable film. Concrete or mortar is molded using the formwork, and the formwork is removed after the concrete or mortar is cured, thereby transferring the corrosion-resistant film layer together with the peelable film onto the surface of the concrete or mortar.

Abstract: A lubricating device for clay or ceramic extruders in the form of a separable lubricating ring inserted between the exit end of the extruder casing or barrel and the entrance end of the die. The lubricating ring includes an annular outer member having a substantially cylindrical inner wall. A frustoconical liner is affixed to the inner wall in such a manner as to form a reservoir therebetween and deliver a variably controlled supply of lubricant to the clay column at the entrance to the forming die. The frustoconical shape of the liner provides a negative angle of impingement between the clay and the lubricating ring resulting in longer life of the liner and an improved penetration of lubricant into the clay or ceramic material.

Abstract: Stretched surface recording disk (SD) 10 comprises an annular support 12 having raised annular ridges 42 and 28 at its inside and outside diameters 22 and 30 with a base portion 24 in between the two ridges, and an annular recording medium film 14 held in radial tension and stretched across the base portion by adhering the film to attachment surfaces 48 and 36 near the inside and outside diameters respectively. The SD is annealed twice during manufacture to relieve stress in the stretched film 14. This annealing results in SD essentially free from track anisotropy and stress distribution anisotropy in the plane of the disk. As a result, data tracks are more stable than in previous SD, track density can be greater, and the SD is generally more reliable.