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Patent Searching and Data


Matches 651 - 700 out of 1,205

Document Document Title
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...  
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...  
JPH0123842B2  
JPH0114979Y2  
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...  
JPH0120484B2  
JPH0118482B2  
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...  
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.  
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...  
JPS649171B2  
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...  
JPS644495Y2  
JPS645812B2  
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...  
JPS6412225U  
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...  
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...  
JPS6350090Y2  
JPS6366649B2  
JPS6364297B2  
JPS6347474Y2  
JPS6360441B2  
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 ...  
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...  
JPS6358698B2  
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...  
JPS6353602B2  
JPS6353022B2  
JPS6351845B2  
JPS6349284B2  
JPS6346881B2  
JPS6346481B2  
JPS6345285B2  
JPS6334521B2  
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...  
JPS6331847B2  
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.  
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...  
JPS6328776B2  
JPS6328004B2  
JPS6327762B2  
JPS6327761B2  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  

Matches 651 - 700 out of 1,205