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Patent Searching and Data


Matches 601 - 650 out of 1,205

Document Document Title
JPH02177034A
PURPOSE: To improve the working accuracy by applying outer shape processing with exposure and etching. CONSTITUTION: A positive photo resist 2 is coated to one side of a stamper 1, 0.3mm thick obtained by applying Ni plating to a glass m...  
JPH02175138A
PURPOSE: To easily peel a resin base plate becoming a molded optical disk from a transparent base plate by transferring the center guide pin part of a center shaft together with a middle ring so as to be retreated from the surface of a s...  
JPH02167729A
PURPOSE: To obtain a substrate for data recording having the guide groove suppressing the mixing of an air bubble and corresponding to the unevenness of a stamper by applying a low viscosity curable resin to the substrate and/or the stam...  
JPH0282521U  
JPH02165934A
PURPOSE: To shorten the heating and cooling period in a heat pressing method, and improve the throughput by applying high frequency voltage to a conductive coil, and heating a metallic reflecting film formed beforehand on the surface of ...  
JPH02161636A
PURPOSE: To facilitate the control of registration in stages for coating of recording media and sticking of a substrate and back material by forming rugged parts perpendicularly to the longitudinal direction on the parts of an extruded s...  
JPH02501751A  
JPH02137915A
PURPOSE: To manufacture a stamper whose flatness and quality are high, by a method wherein a fine form is formed on a board, over which a film which is made conductive is formed, on which an electrification jig having insulation properti...  
JPH02137916A
PURPOSE: To shorten processing hours and make surface roughness of a ground surface uniform, by a method wherein a fine form is formed on a board, over which a film, which is made conductive, is formed, electroforming is performed by arr...  
JPH02137141A
PURPOSE: To improve quality and to attain massive duplication by composing a stamper of a transparent board, which has a fine rugged pattern on a surface, and a metal film formed on the fine rugged pattern side surface of this transparen...  
JPH02118931A
PURPOSE: To prevent the deterioration in a reproduced signal by directing a face of an optical disk stamper with no signal recorded thereupon downward and using a magnet chuck mechanism so as to attract a face with no signal recorded the...  
JPH02106328A
PURPOSE: To eliminate troubles such as cracks of a thin film layer and a peeling from a board by forming a signal pattern surface with resin having no urethane group, and introducing the urethane group into a boundary with the layer. CON...  
JPH0215927B2  
JPH0298848A
PURPOSE: To easily obtain a disk base which has high-accuracy track pitch and a format recording position at low cost by varying the moving speed of a recording head from a moving speed of the recording head found from prescribed track p...  
JPH0291835A
PURPOSE: To shorten an injection molding process for a carrier and to prolong a service life of a metallic mold by providing two or more spiral tracks centering prescribed positions on a master disk. CONSTITUTION: In an annular area 6 be...  
JPH0212173B2
A disk which carries information obtained by molding from a cut matrix is detached from the matrix by means of a gas jet injected between the disk and the cut matrix. The disk is maintained in contact with the matrix both at the peripher...  
JPH0276728A
PURPOSE: To prevent distortion of a base by forming an inserting signal recording guide channel by a flat sheet stamper and rollers while a transparent resin material for the base is delivered continuously in a sheet shape by a molding m...  
JPH0269224A
PURPOSE: To enable photosetting resin to be spread in a short time and to eliminate the need for making a base plate, a stamper mold and a peripheral jig heat resistant by irradiating photosetting resin with specified electromagnetic wav...  
JPH0264941A
PURPOSE: To obtain the thickness of the optical master disk with good accuracy by providing a recess of the same thickness as the thickness required after the optical master disk is polished to a substrate to be stuck with the optical ma...  
JPH028567B2  
JPH024042B2  
JPH024041B2  
JPH0211318A
PURPOSE: To avoid a situation where an information pattern transferred on a base is damaged by projections of a stamper by removing a molding from the stamper while it is adhered on a flat plate and then removing the molding from the fla...  
JPH0210536A
PURPOSE: To manufacture the optical disk substrate having wide grooves easily and accurately by irradiating a photoresist layer formed on a substrate of a resist mother disk with laser light while rotating the disk and then developing th...  
JPH02761B2  
JPH01320653A
PURPOSE: To correspond a molding and production conditions and to more surely administer production by inscribing the intrinsic serial number inscribed by the depth of desired holes or the direction of an arrow to the substrate. CONSTITU...  
JPH01312749A
PURPOSE: To eliminate the influence of heat by irradiation of UV light and to prevent the partial deformation of transferred rugged shapes by the distortion in a transverse direction by preheating a metallic mold for reproduction and a r...  
JPH01311436A
PURPOSE: To increase the yield of production to 100% by pressurizing the center of a glass disk via a spacer and executing pressure reduction while a transfer mold and the glass substrate are held non-parallel with each other to remove a...  
JPH01311437A
PURPOSE: To obtain high reliability by consisting the above process of a 1st stage of a peeling a disk for reproduction of an information recording surface and a substrate, a 2nd stage of forming a thin film layer for recording and a 3rd...  
JPH01308617A
PURPOSE: To shorten the production time by irradiating a composition forwarded with the revolution of an embossing roll with light, curing the composition, punching the composition to a specified shape, evaporating a metal on the irregul...  
JPH01294242A
PURPOSE: To assure the adhesive region where two sheets of substrates are adhered and stuck by a UV curing resin or the like by masking a magnetic material to the part of a disk-shaped transparent substrate exclusive of the recording sur...  
JPH01291926A
PURPOSE: To enhance productivity and reliability of a disc by keeping an area surrounding a pressure fixed surface of a disc stamper coated with photo-setting resin and a base in the vacuum state. CONSTITUTION: A base 3 is retained in a ...  
JPH01285333A
PURPOSE: To improve the wettability of a substrate when a recording layer is formed by applying an org. dye solution and to reduce the adhesion of dust and foreign matter due to electrostatic attraction, by molding a resin using a mold h...  
JPH01264639A
PURPOSE: To facilitate the administration of the optical disk in the production process from injection molding to packing by putting a mark for title identification to a specific region in the non-recording area where information is not ...  
JPH01242238A
PURPOSE: To obtain a highly reliable stamper, by recording a guide groove or data on the surface of the stamper and radially providing a large number of streaks to the rear thereof from the center of the stamper to the peripheral edge th...  
JPH0144138B2  
JPH01235628A
PURPOSE: To remarkably improve productivity and efficiently cope with multikind and small quantity demand by a method wherein serial cure inhibitive photosensitive composition is partially cured by exposing to light and, after that, irra...  
JPH01125615U  
JPH01211342A
PURPOSE: To improve the fitting accuracy of a center hub to a disk substrate by firmly forming a photopolymer layer to which a track pattern is transferred on the disk substrate and, at the same time, by fixing the center hub to the disk...  
JPH0139338B2  
JPH0137250B2
An injection moulding apparatus for use in producing centrally-apertured video disc records (10). The apparatus includes first and second mould halves (11, 17) reciprocally movable with respect to each other between a closed position, wh...  
JPH01191796A
PURPOSE:To obtain a metal master for forming faithful reproduced disks causing no deformation to the information signal by plating the surface of a photoresist layer having recorded information with an electroless plating bath satisfying...  
JPH0133341B2  
JPH01166639A
PURPOSE: To send a reserved slot at an optimum interval to the length of a transmission line by deciding the period of reserved slot transmission in response to the length of the transmission line in a ring shaped transmission line. CONS...  
JPH01163049A
PURPOSE:To obtain a disk without using a disc base plate, by a method wherein an upper mold composed of a transparent plate and a stamper stand having a resin outflow port provided to the upper surface thereof are arranged in opposed rel...  
JPH0130205B2  
JPH01150529A
PURPOSE:To obtain an optical recording medium with an adhesive layer excellent in adhesive strength, water-proofness and moisture resistance and a substrate layer excellent in dimensional stability even in high-temperature and high-humid...  
JPH01146715A
PURPOSE:To make the shape of a cut section of a central hole better and prevent a resin material from overflowing to a sprue side through a gate by providing a projection mechanism to project a sprue bush to a cavity side according to th...  
JPH0185804U  
JPH01141725A
PURPOSE:To strongly bond ultraviolet-curing resin onto a board by a method wherein the surface of the epoxy board for optical disc is pre-treated with specified silane compound and, after that, coated with the ultraviolet-curing resin. C...  

Matches 601 - 650 out of 1,205