| Document |
Document Title |
|
JP01018629 |
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...
|
|
JP01016688 |
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...
|
|
JP63239628 |
PURPOSE: To decrease an initial error rate by coating an adhesive layer on substrates and sticking the substrates to each other in a vacuum atmosphere. CONSTITUTION: An optical recording medium having the tight sticking structure in whic...
|
|
JP63158501 |
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...
|
|
JP63147619 |
PURPOSE: To attempt to cut out a bore of a resin disk with high accuracy by utilizing a shape deformation of a shape memory alloy with temp. change, by setting a blade made of the shape memory alloy on a resin filling hole of a cavity of...
|
|
JP63130320 |
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...
|
|
JP63122527 |
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 ...
|
|
JP63122526 |
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...
|
|
JP63099931 |
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...
|
|
JP63099932 |
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...
|
|
JP63098435 |
PURPOSE: To improve a production yield by enabling control of an increase of an error rate even if a transfer mold is used repeatedly, by making use of the transfer mold whose temperature has been risen through irradiation of ultraviolet...
|
|
JP63096689 |
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...
|
|
JP63092438 |
PURPOSE: To highly accurately transfer information group to a substrate at low cost by a structure wherein a positioning mechanism consists of a centering member, which abuts against the inner wall of the center hole of the substrate at ...
|
|
JP63069041 |
PURPOSE: To easily produce a substrate for an optical recording medium which does not contain air bubbles and has high reliability by heating a curable resin in the stage before the substrate is imposed on the curable resin and removing ...
|
|
JP63034108 |
PURPOSE: To manufacture a disc board excellent in dimensional accuracy by a method wherein the irradiation of light energy over photo-setting resin is performed under the state that a nozzle is protruded spatially and the center hole spa...
|
|
JP62293535 |
PURPOSE: To improve the mass productivity and pattern transfer performance by coating a high polymer resin film to an electronic plating face of a master mold transferring pattern information so as to improve the removal of the transferr...
|
|
JP62279541 |
PURPOSE: To obtain a disk which has excellent durability an is stable for a long period of time by providing a thin film consisting of a mixture composed of specific compds. on the surface of an information recording disk consisting of a...
|
|
JP62279540 |
PURPOSE: To obtain a disk having high stability for a long period of time by providing a thin film consisting of a mixture composed of a silicone oil and specific surface active agent on the surface of an information recording disk consi...
|
|
JP62267937 |
PURPOSE: To extend the service life of a metallic mold and to obtain a disk substrate having high accuracy by forming a hard layer consisting of a material having the higher hardness than the hardness of a material to constitute a stampe...
|
|
JP62238723 |
PURPOSE: To cover both surfaces of a core material with uniform thickness resin layer by preventing deformation of the core material, by a method wherein a positioning protrusion of a mold is inserted into a positioning hole of the diskl...
|
|
JP62231733 |
PURPOSE: To increase recording capacity, by providing a highly accurate molded surface to be a recording surface and cutting surfaces respectively connected to the outer and inner periphery of the molded surface. CONSTITUTION: At the cen...
|
|
JP62231436 |
PURPOSE: To prevent an adhesive from infiltrating to the center hold and to obtain an optical disk substrate for an optical disk with high quality by forming projecting part on an inner circumferential part of a bonded face of at least o...
|
|
JP62212108 |
PURPOSE: To eliminate the generation of flow mark and to reduce the development of birefringence by a method wherein liquid reactive material is poured in a mold, between the top force and the bottom force of which spacers shrinkable in ...
|
|
JP62207612 |
PURPOSE: To obtain a replica plate which has mass-productivity and which is excellent in birefringence on its outer periphery by a method wherein a mold is opened by being deformed with injection molding pressure and, after the finish of...
|
|
JP62204451 |
PURPOSE: To obtain a recording medium having a high CN ratio by controlling the absolute value of the difference between the refractive index at right angles to the flat surface of a transparent plastic substrate and the refractive index...
|
|
JP62200547 |
PURPOSE: To obtain an optical disk substrate which is highly resistant to heat and moisture absorption and has a low double refractive index by injecting and curing a reactive liquid for molding a synthetic resin by a reaction injection ...
|
|
JP62198422 |
PURPOSE: To enable the titled device to control generation of residual stress as low as possible, by a method wherein when the central part of a disk on the inside of an existing cavity is blanked by a punch, resisting force in the direc...
|
|
JP62197938 |
PURPOSE: To improve efficiency of work and mass productivity by including a process in which sheet material of semi-hardened state is obtained by extrusion molding, a process in which a substrate is cut out and a process in which the sub...
|
|
JP62197937 |
PURPOSE: To obtain many optical disk substrates by cast molding of one time and improve productivity by forming a cylindrical material of optical disk by cast molding and obtaining plural optical disk substrates by cutting it. CONSTITUTI...
|
|
JP62196126 |
PURPOSE: To obtain an optical disc excellent in productivity by a structure wherein a reloadable recording layer is held on a substrate made of specified polycarbonate. CONSTITUTION: A plastic substrate consists of polycarbonate which co...
|
|
JP62196127 |
PURPOSE: To obtain a high sensitivity magneto-optical recording disc by a structure wherein an amorphous layer of rare earth-transition metal is held on a substrate made of specified polycarbonate. CONSTITUTION: A plastic substrate consi...
|
|
JP62189642 |
PURPOSE: To easily produce a flexible optical disk or the like having ≤1.0mm thickness by superposing two sheets of laminated sheets formed by transferring rugged guide grooves and laminating an optical recording layer by light energy....
|
|
JP62162256 |
PURPOSE: To obtain the titled optical disk having high recording sensitivity, density, and reliability by using the material obtained by curing an UV curing resin composition consisting of a specified compd. and a photopolymerization ini...
|
|
JP62162526 |
PURPOSE: To obtain a recording medium whose error rate is low and whose stamper can be used for a long period of time, by a method wherein a recording layer is provided on the stamper, over which a resin layer curing through a specific w...
|
|
JP62162257 |
PURPOSE: To reduce the warpage and reggedness of the titled substrate and to improve the flatness by completely curing the cross-linking plastic plate of vinyl ester resin, polyester resin, etc., which has been primarily cured in a mold ...
|
|
JP62144938 |
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 ...
|
|
JP62142617 |
PURPOSE: To constitute the titled device so that a stamper disk does not deform even if the stamper disk is fixed firmly and strong negative pressure is applied to the same by so constituting the stamper that the negative pressure acts u...
|
|
JP62117153 |
PURPOSE: To obtain the titled disk without any remaining molding strains and capable of regulating the refractive index by treating both surfaces of the substrate with a soln. contg. a silane compd. having an ethylenic double bond, heati...
|
|
JP62109623 |
PURPOSE: To manufacture the disc with an accurately finished aperture carrying the tapered face by combining the specific molding process and the cutting process. CONSTITUTION: The disc molded part 13 in which the signals of stamper 6 ar...
|
|
JP62009943 |
PURPOSE: To offer a spin sticking method without any adhesion of a liquidous viscous material (UV resin) which rebounds from a cover for scattering protec tion on a base plate surface even if scattering of UV resin occurs during spin nin...
|
|
JP62003933 |
PURPOSE: To prevent rejected product from generating by a method wherein the required amount of ultraviolet curing resin, which is supplied onto a reproduction master disc for reproducing information recording medium disc, is supplied at...
|
|
JP61248250 |
PURPOSE: To read out information useful for process control and the management of articles from a completed disk by forming a discrimination pattern on a playing information non-recording area of a stamper prior to the molding process of...
|
|
JP61235133 |
PURPOSE: To eliminate mixing of bubbles into resin to reduce the generating rate of defects and improve the yield of the information record carrier by a method wherein an electric field is impressed between a stamper and a base plate and...
|
|
JP61222727 |
PURPOSE: To prevent flash from developing and consequently a board from being stained by cut-off flash by a method wherein photo-setting resin and a board are laminated onto a stamper and further a specific mask having a doughnut-shaped ...
|
|
JP61213131 |
PURPOSE: To improve productivity, by a method wherein photosetting molding resin is applied to a resin pattern molding surface of a stamper under atmospheric pressure and the molding resin is stretched by bonding a replica base to the mo...
|
|
JP61213130 |
PURPOSE: To improve yielding and productivity of products without having mixing of foams within molding resin, by a method wherein a resin leak prevention wall is fitted to a necessary fringe part out of an external and internal fringes ...
|
|
JP61213132 |
PURPOSE: To prevent foams from mixing with molding resin, by a method wherein a stamper and replica substrate are arranged within a vacuum tank in a confronting state with each other, photosetting resin is applied to an information patte...
|
|
JP61211023 |
PURPOSE: To reduce eccentricity by a method wherein the inner diameter of a base plate and a pattern on the surface of a stamper are made concentric by pushing the side surface of a central jig, abutting against the inner diameter of the...
|
|
JP61209140 |
PURPOSE: To facilitate the release of intermediate product from a copying stencil by a method wherein multiple handle members are bond-erected on the part of ultraviolet ray curing resin jutted out of a substrate sheet using ultraviolet ...
|
|
JP61209138 |
PURPOSE: To eliminate any unfavorable effect of residual air by a method wherein a stamper pattern formed of specified track guide channel on the back and a patterning channel on the surface is pressure-welded on the surface of a sensiti...
|
