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JPH02179730A |
PURPOSE: To contrive an improvement in reliability by securing a sufficient flatness of the surface of a stamper even there is a temperature change at the time of use, by a method wherein an adhesive agent whose coefficient of thermal ex...
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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...
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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...
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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...
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JPH0282521U |
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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 ...
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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...
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JPH02501751A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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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...
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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...
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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...
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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...
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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...
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JPH0215927B2 |
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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...
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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...
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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...
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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...
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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...
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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...
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JPH028567B2 |
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JPH024042B2 |
PURPOSE:To achieve a disc in which the demolding performance with a stamper and the adherence with a lining carrier are excellent, by including an addition compound with acrylie acid and epoxy resin and an additives of specific type to a...
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JPH024041B2 |
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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...
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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...
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JPH02761B2 |
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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JPH0144138B2 |
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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...
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JPH01125615U |
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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...
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JPH0139338B2 |
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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...
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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...
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JPH0133341B2 |
PURPOSE:To obtain a base plate for optical disc with guiding grooves for tracking servo having excellent adhesiveness, by treating an epoxy base plate with a lower alcoholic solution containing a silane compound having ethylenic double b...
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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...
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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...
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JPH0130205B2 |
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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...
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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...
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JPH0185804U |
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