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JPH092659A |
To house a carrier device and each station for receiving a substrate in a remarkably small space. A rotary table 12 to be driven at a constant cycle time corresponding to the working time of a process station, which has the longest worki...
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JPH08306067A |
PURPOSE: To obtain a process for producing an optical disk having a multilayered structure formed in such a manner that the occurrence of a deviation in the signal control regions between recording parts is averted. CONSTITUTION: This pr...
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JPH08306069A |
PURPOSE: To satisfactorily mass-produce optical disks each having large capacity and excellent in signal quality. CONSTITUTION: Pits or grooves in an optical disk are formed with a photosetting resin 202 on a substrate 203 consisting mai...
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JP2535997B2 |
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JPH08238877A |
To efficiently recycle an old plastic sheet by using a new form capable of biologically separating color information or particularly a plastic capable of recycling by melting. An old plastic sheet which has not been used is suitably mech...
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JPH08235644A |
PURPOSE: To obtain a multilayer recording medium in which an intermediate layer is formed simply, in which an irregularity in a thickness can be suppressed and which can be manufactured in a short time and with high accuracy. CONSTITUTIO...
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JP2533379B2 |
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JP2532361B2 |
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JP2531792B2 |
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JPH08224779A |
PURPOSE: To efficiently produce a high quality substrate for a information recording medium by introducing the edge part of a molten resin sheet into groove parts formed on the surfaces of a roll and a roll stamper when a molten resin sh...
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JPH08221812A |
To obtain method and device for producing a multilayer optical recording medium comprising a reflective layer and a first recording layer formed on a transparent substrate with at least one resin layer having a second recording layer bei...
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JP2526118B2 |
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JP2526618B2 |
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JP2525065B2 |
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JP2523853B2 |
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JPH08207161A |
PURPOSE: To peel off an optical disk excellently from a stamper. CONSTITUTION: A fixed specular plate 19 is supported displaceably by a plate displacing mechanism 20 in relation to a movable specular plate 3 to which a stamper 12 is fitt...
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JPH08203125A |
PURPOSE: To obtain a laminated optical disk having a high recording density and high transfer rate in which information can be reproduced from plural recording planes by irradiation with beams from one surface without causing reading def...
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JP2521849B2 |
PURPOSE: To attain a good development by measuring and distributing a fixing agent on a substrate surface to prepare the surface while rotating a glass substratd at a relatively low speed and drying the surface by rotating the substrate ...
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JP2521258B2 |
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JP2522680B2 |
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JP2519985B2 |
A stamper (30) for injection-molding a plastic substrate for an optical disk characterized in that a rear surface of the stamper has a surface roughness between 0.3 to 2.0 S.
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JP2519099B2 |
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JPH08180473A |
PURPOSE: To prevent the occurrence of the warping caused by the hardening of resin in at least effective area region and to obtain a highly precise stamper master disk by successively reducing the irradiation light quantity of ultraviole...
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JPH08180470A |
PURPOSE: To obtain a replica having a high surface precision by employing an original mold and a substrate having respective specific thermal expansion coefficients and thicknesses and canceling the warping of the original mold and the s...
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JPH08171744A |
PURPOSE: To obtain a master stamper disk which is entirely free from air bubble defects on the surface of photosetting (2P) resins and is faithfully transferred with rugged patterns of an original mold by adding an adsorbent to the repli...
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JPH08171740A |
PURPOSE: To inexpensively produce an embossed optical card by arranging an embossable resin in an embossed region and a resin suitable as a substrate for an optical card in another region including an optical recording region, respective...
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JPH08167178A |
PURPOSE: To provide a master disk for a stamper with a resin surface perfectly free from bubbles and defects and having a rugged pattern faithfully transferred from an original die by carrying out replica forming in a vacuum system after...
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JPH08161774A |
PURPOSE: To prevent a 2P resin from generating a lifting or a shrinkage after the 2P resin has been hardened by a method wherein, when a cell is formed via spacer, a filler such as glass beads or the like is filled into its inside space ...
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JPH08161776A |
PURPOSE: To lower a stress applied to a substrate when it is stripped and to prevent a crack and a chip in the substrate by a method wherein the surface of a mold which forms grooves in uneven shapes corresponding to guide grooves on an ...
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JP2507048B2 |
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JP2507034B2 |
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JPH08124224A |
PURPOSE: To prevent defective reproduction characteristics by preparing a sheet- like translucent board having a thermoplastic resin layer, thermally pressing a stamper against the board thereby transferring the protrusions and recesses ...
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JPH08124212A |
PURPOSE: To color a plastic board, on which a signal recording part for reading out an information signal optically is formed, such that the type, the use, and the like can be determined instantaneously while sustaining good optical char...
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JPH08124223A |
PURPOSE: To attain mass production of an optical disc at low cost by laminating a synthetic resin film on a planar translucent board, making a central hole therein and transferring protrusions and recesses, representative of information,...
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JPH08124222A |
PURPOSE: To mass produce an optical disc at low cost by providing a synthetic resin film layer on the surface of a smooth translucent board produced through injection molding including no stamper and forming protrusions and recesses ther...
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JPH0827998B2 |
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JPH0827996B2 |
A method for making optical recording media (40) in which the optically readable information is embossed therein by means of an information master recording which is directly usable as a stamper (11).
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JPH0863807A |
PURPOSE: To prevent the local abnormality of birefringence by receiving the self-weight of a plastic substrate for optical disc at one point at the time of annealing. CONSTITUTION: A plastic substrate 1 for optical disc is held by a hold...
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JPH0823941B2 |
An optical information record carrier, in the form of an optical disk, has multiple reflective surfaces (12,15), each carrying separate information and each readable by an optical beam directed from the same side of the record carrier. T...
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JPH0822573B2 |
A disc-shaped information carrier (1) is formed by welding two injection-moulded plastics discs concentrically to each other (1A, 1B), which discs are manufactured by means of a method comprising the manufacture of a matrix (9), which ma...
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JPH0834068A |
PURPOSE: To provide the structure of the stamping display part of a disc molded product capable of easily reading characters even when characters are stamped in a state overlapped with an annular groove or a bonding line. CONSTITUTION: A...
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JPH0836794A |
PURPOSE: To make optical and mechanical characteristics sufficient by a method wherein an index of double refraction compensating the amount of change in the double refraction of a base occurring in each process is given to the base befo...
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JPH0831025A |
PURPOSE: To obtain a process for producing a substrate for optical information recording media which improves transferability of preformat patterns and suppresses double refraction down to a low level and a device therefor. CONSTITUTION:...
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JPH0831024A |
PURPOSE: To produce a plastic substrate for a recording medium having improved performance as a recording medium by eliminating warp and wave which are generated at the time of molding. CONSTITUTION: Each molded plastic substrate 1 for a...
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JPH0825503A |
PURPOSE: To provide a mold wherein a magnetic disk composing hub, a hub base material, and an optical disk substrate are simultaneously integrally molded, and a manufacturing method for the optical disk by using the mold. CONSTITUTION: I...
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JPH0825502A |
PURPOSE: To provide a manufacturing method for a substrate for a photoelectromagnetic disk wherein double refraction of the photoelectromagnetic disk prepared by laminating by vapor deposition of a protective film and a magnetic material...
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JPH0817078A |
PURPOSE: To obtain a substrate for an optical disk having satisfactory transferability from a stamper and low double refraction for a substrate. CONSTITUTION: When a molten resin is introduced into the cavity 3 in a metal mold, the exten...
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JPH0811225A |
PURPOSE: To solve a problem of defective transfer of a patterned part or a warp of a board by cooling an edge part of a sheet under a state in contact with a stamper without the edge of the sheet being twisted, by making the outside of a...
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JPH081811A |
PURPOSE: To permit the forming of a sheet, low in refractory index and high in transfer rate, and prevent fringe pattern as well as double refraction by a method wherein a plurality of series of heating medium are passed through a coolin...
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JPH07121562B2 |
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