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Patent Searching and Data


Matches 251 - 300 out of 1,205

Document Document Title
JP2001134990A
To obtain an optical recording disk having good quality in which the inner peripheral edge of a hardened resin shows a beautiful concentric profile even when both of circular substrates have variance in wettability for a UV-curing resin,...  
JP3158394B2
PURPOSE: To provide a mold capable of taper-forming a center hole of a substrate for magneto-optical mini disks (MD-MO). CONSTITUTION: A cavity 23 of a form of a substrate 20 and a gate 63 of a ring form opened to a position correspondin...  
JP2001505349A
A device cures an adhesive by means of UV radiation in an inert-gas atmosphere. The adhesive is interposed as an adhesive layer between two superposed layers of a disc-shaped information carrier. The device includes a UV source, a suppli...  
JP2001052384A
To surely and uniformly bond substrates by placing a quartz or glass plate on a substrate disk while being dried, and cooling the plate before placed on a next substrate disk after the drying process in which heating is carried out. A bo...  
JP2001052383A
To surely and uniformly bond substrates by making an inner grip and an outer grip relatively movable when a far region of one substrate is bent in a direction to separate from the other substrate. A bending apparatus 40 has an inner grip...  
JP2001038816A
To improve smoothness by heat-treating a disk substrate while it is supported in two or more places excluding the outside end part and inside end part of one main surface of it or in the whole surface excluding the outside end part and i...  
JP3112123B2
PURPOSE: To rationalize the producing process by disposing one of the moving passage of a conveying carriage having a plurality of conveying arms perpendicularly to an injection molding machine, crossing the other with a turntable axis, ...  
JP3112543B2
A method of manufacturing an object having a surface structure, the method employing pressure members (3,5) which are movable relative to one another and which have facing pressure surfaces (23, 25). A first element (51) and a second ele...  
JP3104699B1
A substrate 3 on which a photoresist 2 is coated is exposed to an exposure light along a line through a lens 1. Then, the exposure position is moved from the initial position O1 to the position O2 apart from a distance corresponding to a...  
JP3104198B2  
JP2000513654A
This novel method adheres two substrates (3, 6) together, forming a disc (23). This product is especially a digital video disk (DVD). Adhesive is coated onto a surface of the first substrate (3), and the second substrate (6) is laid upon...  
JP2000268417A
To make a middle layer uniform in thickness and to enhance reliability in the read of an information signal from a 2nd information recording face by forming the middle layer disposed between two information recording faces with a light t...  
JP3090611B2
A method of effectively developing an adhesive (R) in a storage disc (D) and capable of differentiating a suction force applied from a surface of a rotary holding table (X) from a drawing force applied from a boss (1). The method compris...  
JP3072797B2  
JP2000507515A
(57) Summary book invention relates to the method and equipment for pasting up two disk elements (12, 14) together. Two disk elements receive mutually, are brought to the same axle together, and form a gap (46) between disk elements. In ...  
JP2000507734A
A process for manufacturing an optical data storage disk stamper includes the steps of providing an amorphous electroless nickel substrate including phosphorous in the amount in a range of about 5 to 15 percent by weight having a toughne...  
JP3043966B2
PURPOSE: To speed up the production cycle and to improve the production efficiency by executing a forced cooling after formation of metallic films, then forming protective films. CONSTITUTION: Moldings of disks are obtd. integrally with ...  
JP3032587B2
Resin, typically polycarbonate is injection molded into a disc substrate under select conditions, for example, at a mold temperature of 100-160 DEG C., an injection velocity of 100-120 g/sec., and a pressure of 10-60 kg/cm2, such that th...  
JP3006199B2
In a process for producing optical disks comprising the steps of subjecting the photoresist layer (3) on a substrate (1) formed of silicon, quartz, glass or a metal to light exposure, developing and etching treatments to obtain a stamper...  
JP2995754B2  
JP2995755B2  
JPH11515130A
Because of peculiarities of the second layer of the DVD compact disc a Mother is used as a Stamper to replicate the proper pit structure and sequence. This has the advantages of incurring no additional cost at Mastering or Plating other ...  
JPH11514782A
(57) In the method of reproducing relief structure (9) from the outside surface (5) of the 1st cylinder drum (1) of a summary to the outside surface (25) of the 2nd cylinder drum (21). : (a) Between the above-mentioned outside surface (5...  
JP2975588B2
An auxiliary device is intended to be added to an injection moulding device for manufacturing disc-like information carriers. The injection moulding device comprises a mould having two mould parts which in a closed situation bound a moul...  
JPH11312337A
To make scratches, etc., on a disk part inconspicuous by roughening the disk part where defects of an adhesive used for sticking two sheets of disks appear. A DVD is provided with at least one roughened surface of at least one surface of...  
JPH11300842A
To obtain a transparent substrate for an optical disk excellent in transfer properties. The glass transition temp. of a polycarbonate resin subjected to injection molding in order to form a transparent substrate is 120-142°C and the tra...  
JPH11296904A
To provide an information recording medium which secures sufficient tilt margin and mechanical strength even if a record density is increased. This information recording medium contains a substrate 1 that has a record plane on which embo...  
JP2956989B2
A method for making an optically readable medium containing a relief information track comprising the sequential steps of (a) laminating a dry photohardenable film to a surface of a transparent dimensionally stable substrate; (b) embossi...  
JP2955224B2
A prescribed molded substrate is molded out of a melted resin with a stamper having projections for forming pits with the shape of the projections preliminarily set to be greater than the shape of pits of the substrate to be molded. The ...  
JP2949721B2  
JPH11224439A
To improve the recording density of a carrier by laminating two reflecting layers respectively carrying recording information as fine recess/ projections through a transparent layer so as to include silicon in one of the reflecting layer...  
JPH11203724A
To provide an optical disk which has a light transparent layer suppressing the generation of build-up parts in an outer peripheral part as much as possible and having a good surface characteristic and is so formed as to allow a further i...  
JP2909724B2
IN ADVANCE OF CARBON COATING, BY INJECTING IONS INTO THE SHAPED SURFACE OF A METALLIC MOLD MADE OF SUPER-HARD MATERIALS, IT BECOMES POSSIBLE TO INCREASE THE ADHESIVENESS OF THE CARBON COAT ONTO THE MOLD MATERIAL, AND TO INCREASE THE LIFE...  
JPH11166113A
To provide a polycarbonate material for an optical disk substrate having an excellent transferring property, moldability, impact resistance, transparency, productivity and a decreased warpage. A polycarbonate is blended with 200-10,000 p...  
JPH11105148A
To provide a disc-shaped molded object and to achieve the enhancement of the quality, yield and productivity of a product. Recessed parts 213 are provided to the peripheral surface 212 of the opening part 211 provided to the central part...  
JPH1186353A
To prohibit the occurrence of warpage by residual stresses at the time of forming an optical disk by forming the embossements corresponding to recording signals on the one surface of a molded disk substrate and forming dummy embossments ...  
JP2862290B2  
JPH11501434A
A process for manufacturing an optical data storage disk stamper includes the steps of providing a chemically vapor-deposited, silicon carbide substrate having a toughness of about 4.5 MPa 2ROOT m, a roughness of about 1 nm, and a flatne...  
JP2847196B2  
JP2844667B2  
JP2841188B2  
JPH10315345A
To provide a method for manufacturing an optical information recording medium disc with a low bit error rate by optimizing a step to manufacture the medium disc using a substrate of a cyclic olefin resin. A specified part of the surface ...  
JP2828665B2  
JP2826728B2
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 which ...  
JP2822251B2
A disc base plate transfer device for duplication of the disc base plate (7) by transferring a pattern of projections and recesses on a stamper (10) onto a layer of a photopolymerization curable synthetic resin provided on a disc base pl...  
JPH10275362A
To provide an optical stuck disk in which film thicknesses of adhesive layers can easily uniformized and stuck disks having uniform adhesive layers can be stably provided in large quantity. When this disk is constituted so that two sheet...  
JPH10261246A
To produce an information recording carrier whose eccentric quantity is small with high productivity by allowing a process providing a projection on the master disk of the information recording carrier to be included in the manufacturing...  
JP2800274B2  
JP2799157B2
PURPOSE: To obtain a composite optical disk structural body with which the formation of clamping areas as display regions without the creation of ruggedness on their surfaces is possible and the display regions are thereby expanded. CONS...  
JP2790648B2  

Matches 251 - 300 out of 1,205