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JPH01127324A |
PURPOSE:To improve adhesion of ultraviolet-curing resin to a board, by a method wherein a matter whose surface has been treated beforehand with a vinyl chloride copolymer containing carboxylic acid is used as an epoxy board. CONSTITUTION...
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JPH01118433A |
PURPOSE:To keep favorable characteristics as optical recording medium even at elevated manufacturing rate and realize its mass-production by a method wherein the manufacturing of the medium is done through the fixation and transferring o...
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JPH0123842B2 |
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JPH0114979Y2 |
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JPH01103430A |
PURPOSE: To perform a large number of times of accurate transfer printing by a method wherein the title stamper is provided with a die base comprised of a metal and a transfer printing plate where it is comprised of a fluorinated synthet...
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JPH0120484B2 |
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JPH0118482B2 |
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JPS6488941A |
PURPOSE: To mold a sub-substrate fat supporting a magneto-optical recording layer by horizontally mounting a metal mold and allowing a hot liquid plastic material to flow uniformly in a radial direction from the symmetrical axis of the p...
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JPH0115365B2 |
A record transfer press including an apparatus for trimming flash from a disc record, said apparatus having a relatively movable drive means and trimming head.
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JPS6464834A |
PURPOSE: To mitigate a stress generated upon absorbing moisture, permit the restriction of generation of a crack in a radiation curing resin layer and improve the reliability of the base of a disc, by interposing a stress mitigating laye...
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JPS649171B2 |
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JPS6443830A |
PURPOSE: To obtain a substrate having good warpage by subjecting the substrates for information recording having an air sandwich structure to ultrasonic welding by using a horn and anvil having the steps corresponding to the difference i...
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JPS644495Y2 |
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JPS645812B2 |
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JPS6418629A |
PURPOSE: To produce an optical disc base plate without occurrence of flashes and with high dimensional accuracy, by filling a photo curable resin in a main space and a part of a resin storing space from a nozzle of a mold, and irradiatin...
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JPS6412225U |
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JPS6416688A |
PURPOSE: To enhance heat resistance, reduce optical distorsion and prolong useful life, by forming a substrate of an optical disk from a resin comprising a specified polysulfone resin. CONSTITUTION: The substrate of an optical disk is fo...
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JPS641290B2 |
This invention relates generally to a manner of cooling an injection mold assembly which is designed for molding a centrally apertured part such as a video disc. The mold assembly comprises two halves 14, each including a platen 148 whic...
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JPS6350090Y2 |
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JPS6366649B2 |
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JPS6364297B2 |
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JPS6347474Y2 |
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JPS6360441B2 |
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JPS63285733A |
In a method of marking optically readable disc-shaped information carriers which are manufactured, for example, by a transfer-moulding process using at least one mould serving as a stamper, which mould has been derived from a master via ...
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JPS6359378B2 |
A method and device for manufacturing a record carrier is disclosed in which a liquid moulding resin is deposited in a cavity formed in the surface of a mould which also has at least one data track. Thereafter a flexible substrate, havin...
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JPS6358698B2 |
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JPS6356043B2 |
A molded article having excellent optical characteristics and obtained by injection molding a resin composition of a bis(hydroxyphenyl)alkane polycarbonate resin having an average molecular weight of 12000 to 18000 and containing 0.005 t...
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JPS6353602B2 |
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JPS6353022B2 |
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JPS6351845B2 |
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JPS6349284B2 |
A surface material for phonograph records prepared by subjecting a copolymeric vinyl resin powder incorporated with a small amount of a stabilizer to the hot blending treatment, melt-kneading the product under heating, cooling the same t...
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JPS6346881B2 |
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JPS6346481B2 |
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JPS6345285B2 |
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JPS6334521B2 |
PURPOSE:To obtain a disc type recording medium having surface structure faithful to the information signal by covering the stamper surface with the liquid resin of a specific ultraviolet-curing type resin, then press-fixing a substrate c...
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JPS63158501A |
PURPOSE: To attain high adhesion of a layer of a hardened product comprising a mixture of liquid resin to a transparent substrate by using a liquid resin mixture hardenable by radiant rays and heat which comprises a mixture of liquid res...
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JPS6331847B2 |
PURPOSE:To shorten the time of the formation of a disk by coating a base film with an ultraviolet curing resin. CONSTITUTION:At formation part 11, a signal is formed on the surface of ultraviolet-ray curing resin 51. Formation part 11 co...
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JPS6330126B2 |
An extruder control arrangement in which the time taken to deliver a known quantity of extrudate is maintained within closely controlled limits by feedback circuit which controls the rate at which plastics material is fed to the extruder.
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JPS6330128B2 |
A method for manufacturing high information density storage disks, suitable for optical reading, out of transparent synthetics having a high glass temperature and high dimensional stability. The present injection molding method avoids po...
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JPS6328776B2 |
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JPS6328004B2 |
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JPS6327762B2 |
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JPS6327761B2 |
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JPS63130320A |
PURPOSE: To constitute the title mold so that hit flaws are not marked on a stamper or a mirror surface and to shorten exchange time of the stamper, by providing a device for releasing the holding of an outer circumferential stamper pres...
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JPS63122526A |
PURPOSE: To provide a manufacturing method of an optical disk base having a high reliability, in a few manhour, by applying specific ultraviolet rays to photo-setting resin (2P) where a guide groove is formed. CONSTITUTION: A short wavel...
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JPS63122527A |
PURPOSE: To reduce drastically eccentricity at the time of a disk drive, by a method wherein at the time of forming of a groove for tracking on a transparent disk having the center hole with a photo-setting resin, an inner circumference ...
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JPS63118243A |
The invention relates to a polymeric, rigid, circular etched substrate (4) for a recording or optical reading disc, and the optical discs obtained by associating with the substrate (4), on which is deposited a sensitive reflective record...
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JPS6399931A |
PURPOSE: To manufacture at a high speed and easily an optical disk base which is superior in inside and outside diametral-accuracy and thickness accuracy, by a method wherein photosetting resin is cast into not only a main space but also...
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JPS6399932A |
PURPOSE: To manufacture at a high speed and easily an optical disk base which is superior in inside and outside diametral-accuracy and thickness accuracy, by a method wherein a difference in level for pushing up a base is provided on a c...
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JPS6396689A |
PURPOSE: To obtain high-quality transfer foil by extruding and cooling a synthetic resin melt to the surface of a base material sheet in the release layer side with a cooling roll having a stamper of a relief hologram type, then providin...
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