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JPH07334866A |
PURPOSE: To obtain such an optical disk that has excellent productivity and quality stability and causes no deterioration of mechanical characteristics of a light-transmitting substrate in the production process nor bubbles remaining in ...
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JPH0755691Y2 |
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JPH07106606B2 |
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JPH07302442A |
PURPOSE: To obtain data recording faithfully reproduced from the master recording by coating rotatable the master disk having a photoresist image with a solution before separation. CONSTITUTION: In the process 12, a relief characteristic...
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JPH07102625B2 |
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JPH07287864A |
PURPOSE: To provide a production method of an optical disk by which no deterioration in mechanical characteristics of a light-transmitting substrate is caused in the production process, no distribution of pressure is produced during pits...
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JPH07287863A |
PURPOSE: To provide an optical disk excellent in productivity without causing as deterioration in mechanical characteristics of a light-transmitting substrate in the production process, and to provide a production method to efficiently o...
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JPH07287867A |
PURPOSE: To provide an optical disk which has an additional information recording region suitable for recording information meeting a user's taste by small- volume production in addition to an information recording region suitable for re...
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JPH0792991B2 |
A process of producing a magnetic diskette comprises the steps of cutting a nonwoven fabric sheet to form a piece for the liner, which piece has outer periphery and an inner periphery for efining the central opening and is separably fitt...
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JPH07241891A |
PURPOSE: To provide optical disk molds which can be applied to an existing optical disk molding machine and in which thickness of disks can be made uniform. CONSTITUTION: A core 14 which is hydraulically operated and in which an insert 1...
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JPH07214686A |
PURPOSE: To provide the gate cutting mechanism of a mold for an optical disk not strictly requiring the concentricity of fixed and movable molds and producing burr at the time of the cutting of a disk. CONSTITUTION: A gate cutting mechan...
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JPH07205200A |
PURPOSE: To prevent the generation of bit shift and double transfer by sucking the rear surface of a stamper from a mold to hold the surface and peripheral end surface of the stamper to a non-contact state with respect to the mold and se...
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JPH0732036Y2 |
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JPH07186194A |
PURPOSE: To facilitate the replacement of a used stamper with a new one while protecting it against stains and scratches by automating the replacement. CONSTITUTION: A stamper attaching and detaching means 2 to remove a used stamper from...
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JPH0763991B2 |
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JPH0760534B2 |
In a method of forming a video disc or a digital sound recording disc for example, a uniform layer of a predetermined thickness has to be applied to a substrate, and according to the invention, the layer material is applied in the form o...
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JPH0758564B2 |
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JPH0758562B2 |
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JPH0758563B2 |
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JPH0751300B2 |
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JPH07141704A |
PURPOSE: To enable blanking of disks with high accuracy at a high speed by first blanking outer peripheral parts out of a substrate, then blanking inner peripheral parts. CONSTITUTION: First, the outer peripheral parts of patterns are bl...
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JPH0746445B2 |
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JPH0736239B2 |
An optical storage disk consists of a glass substrate (1) into which guide tracks (3) for servo-controlling the focussed light beams are directly stamped by a hot stamp process. After stamping, the glass substrate is thermally quenched i...
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JPH0731827B2 |
A matrix is used to prepare a mold of an elastomeric material. A polymerizable compound is coated onto a flexible, thin substrate such as Mylar and is placed with compound side in intimate contact with the mold. The compound is cured and...
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JPH0729310B2 |
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JPH0729386B2 |
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JPH0785506A |
PURPOSE: To reduce unit price and to enhance work efficiency by forming a stamper with the use of a master having a record forming surface of a prescribed pattern on the upper face and then working an unfinished disk having a recording s...
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JPH0723559B2 |
A stamper cleaning apparatus comprises an electrocleaning tank for performing electrodegreasing, a washing room adjacent to this cleaning tank, a shower, disposed in the upper section of the washing room, for water-washing a stamper by s...
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JPH0757307A |
PURPOSE: To provide an apparatus for production of the optical disk substrate capable of nearly completely removing the static electricity on the surfaces of the optical disk substrate, preventing the sticking of dusts and improving the ...
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JPH0744899A |
PURPOSE: To provide a process for production of the stamper master disk which is capable of forming a 2P resin replica without intruding and protruding of air bubbles, yields the 2P resin replica having good transferability without the d...
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JPH0737279A |
PURPOSE: To reduce the resistance of an electric conductivity imparting film formed so as to carry out electroforming when a stamper for producing an optical recording medium is produced by electroforming. CONSTITUTION: The peripheral ed...
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JPH0737280A |
PURPOSE: To surely peel a UV curing resin and a transparent plate by providing the apparatus with the transparent plate disposed between the signal surface of a stamper held by a stamper holding part and a means for ejecting up the trans...
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JPH0729226A |
PURPOSE: To suppress the generation of resin scrap and to produce the optical disk having stable quality as there is no flow-in of a photosetting resin by facilitating peeling of even the disk having a large diameter and having poor flex...
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JPH0729216A |
PURPOSE: To inspect the positions and sizes of the defects within a stamper consisting of a conductive material by holding this stamper between two electrodes having end faces parallel with each other, deciding the electrostatic capacity...
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JPH0724925A |
PURPOSE: To provide a method wherein a required pattern like electrodeposited layer (for a preformat pattern or for a recording layer) which is preliminarily independently formed can be excellently formed by transfer on a substrate. CONS...
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JPH07316B2 |
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JPH071461A |
PURPOSE: To obtain a master disk capable of being read by the reader of an optical disk to be usable many times in order to produce a new mold without being accompanied by any post-treatment. CONSTITUTION: A material layer 9 is applied t...
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JPH06342534A |
PURPOSE: To improve the productivity of the optical disk by providing the stamper for the optical disk having the metallic surface layer on which a rugged pattern having the film stress within a specified range is impressed. CONSTITUTION...
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JPH06342537A |
PURPOSE: To obtain the magneto-optical recording disk supporting the amorphous layer of rare earth transition metal on a transparent polycarbonate substrate. CONSTITUTION: The disk has a polymer layer 4 between the polycarbonate substrat...
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JPH06101143B2 |
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. C...
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JPH0698647B2 |
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JPH0694142B2 |
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JPH06318347A |
PURPOSE: To provide the magneto-optical recording disk having a high C/N by forming an amorphous layer consisting of a rare earth-transition metal, a dielectric layer and a reflection layer on a transparent polycarbonate substrate having...
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JPH06318342A |
PURPOSE: To form a base plate, which can be produced at low cost in a short time while saving labor for producing the disk-shaped optical recording carrier of plastic material of CD or LD (video disk), for example, from the plastic mater...
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JPH0681704B2 |
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JPH06218757A |
PURPOSE: To increase the number of data carriers produced per one work cycle without lowering capacity or quality under a condition customary to a single mold technique presently. CONSTITUTION: In an injection molding or injection emboss...
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JPH0655396B2 |
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JPH0656655B2 |
A support for a stretched recording film and method of attaching the film to the support. The support includes a flat disk-shaped base, an annular upstanding rim which terminates in a reference surface, an annular radially extending bond...
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JPH06170850A |
PURPOSE: To make the plate-shaped body of a molding member thin and to miniaturize the molding member and a molding apparatus as a result by eliminating the necessity for providing a screw hole and the necessity for using a separate seal...
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JPH0639535B2 |
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