Entries |
Document | Title | Date |
20090017251 | MULTI-INFORMATION-LAYER RECORDING MEDIUM AND MANUFACTURING PROCESS - In forming a space layer of a multi-formation-layer recording medium, there are provided a medium having a high precision in a thickness of the space layer and its manufacturing process. In the multi-formation-layer recording medium wherein at least two pairs of an information recording layer and a translucency spacer are layered on a substrate having physical patterns composed of an optical spot groove and/or pits on the surface, an average thickness of the translucency spacers in an information zone is 15 μm or less, and a difference in spacer thickness between a minimum value and a maximum value is 2 μm or less. | 01-15-2009 |
20090068391 | INFORMATION RECORDING MEDIUM - The invention discloses an information recording medium comprising a disc body, an ink-receiving layer, and a stacker ring. The disc body comprises a non-data side and a data side. The ink-receiving layer is provided on the non-data side. The ink-receiving layer has an outer radius larger than 57 mm and an inner radius smaller than 20 mm. The stacker ring is located near the center of the data side. The stacker ring has a radius smaller than 11 mm. Specifically, the radius of the stacker ring should be smaller than the inner radius of the ink-receiving layer. Accordingly, a larger area pattern can be printed on the information recording medium of the invention. Furthermore, since the stacker ring does not contact the ink-receiving layer, the information recording medium will not adhere to another under high temperature and high humidity after a period of transportation. | 03-12-2009 |
20090155513 | Composition for hard coat, article having hard coat layer and method for producing the article - The present invention provides a composition for hard coat capable of forming a hard coat layer having the improved anti-staining property, anti-staining durability, scratch resistance, abrasion resistance, antistatic property and the like. A composition for hard coat comprising: an active energy ray-curable silicone-acrylic copolymer (A); an active energy ray-curable polyfunctional compound (B); and an electrically conductive material (C), wherein the active energy ray-curable silicone-acrylic copolymer (A) contains: a polysiloxane block (a-1), an acrylic block (a-2) containing an active energy ray-curable double bond group, and a fluoroalkyl group-containing acrylic block (a-3). | 06-18-2009 |
20090220723 | Moulding Device and Method - An injection-moulding device is disclosed, comprising at least a first ( | 09-03-2009 |
20090239022 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCTION THEREOF - The information recording medium of the present invention is provided with a substrate and an information layer including a recording layer. Rerecording and reproducing of information are performed by irradiating the information layer with a laser beam. The recording layer contains, as its main component, a material composed of Te, O, and M, where M denotes at least one element selected from Ru, Rh, Pd, Ag, Re, Os, Ir, Pt, and Au. In the material, the content of Te atom is 1 to 19 atom %, the content of O atom is 20 to 70 atom % (preferably 40 to 70 atom %), the content of M atom is 11 to 79 atom % (preferably 11 to 59 atom %, and more preferably more than 35 atom %). The material is, for example, is indicated as the region enclosed by A, B, C, and D, preferably by C, D, E, and F, and more preferably by E, F, H, and G, in the composition diagram of a ternary material of Te—O—Pd shown in FIG. | 09-24-2009 |
20090239023 | INJECTION-MOULD WITH INDUCTIVE HEATING, INJECTION MOULDING METHOD, OPTICAL INFORMATION CARRIER AND LIGHT GUIDE PLATE - An injection-molding device includes at least first and second mould parts, defining a mould cavity, wherein at least one of the mould parts includes a heating device, for heating the mould part in the vicinity of a mould cavity surface, the heating device includes an inductive coil having a plurality of windings and being powered by an oscillator. The heating device further comprises a thin top member, which functions as a susceptor for electromagnetic energy emitted by the inductive coil, which is placed in grooves in a carrier member. An intermediate member is placed between the top member and the carrier member. The intermediate member does not function as a susceptor to any grater extent, but provides mechanical stability while allowing the heat generation to be concentrated to the top member. | 09-24-2009 |
20090280285 | STAMPER HOLDER, MOLDING DIE AND MOLDED SUBSTRATE FOR RECORDING MEDIUM - According to one embodiment, there is provided a stamper holder which holds a disk-shape metal stamper for molding having a center hole with an inner diameter of 17.5 mm or less and formed with patterns of protrusions and recesses for a recording medium on a surface in a state that the stamper holder is fixed to a first die having a center hole, in which the stamper holder has an approximately cylindrical shape so as to be inserted into the center hole of the first die and comprises a flange provided at one end configured to hold an inner peripheral portion of the stamper surface near the center hole, and an outer diameter of the flange is 17.6 mm or less. | 11-12-2009 |
20090304976 | METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISC - A method for producing a glass substrate for magnetic disk, which is capable of effectively removing a crack is provided. In the method for producing a glass substrate for magnetic disk, there were provided a preparation step | 12-10-2009 |
20100062203 | OPTICAL STORAGE MEDIUM WITH A MASK LAYER PROVIDING A SUPER RESOLUTION NEAR FIELD EFFECT, AND RESPECTIVE MANUFACTURING METHOD - The optical storage medium, in particular a read-only optical disc, comprises a substrate layer, a read only data layer comprising a pit structure and being arranged on the substrate layer, a mask layer comprising nanoparticles for providing a super resolution near field effect, and a dielectric layer arranged between the data layer and the mask layer. The dielectric layer has a thickness, which changes in dependency of the pit structure and is for example a plastic layer having a completely flat surface for providing a uniform arrangement of the nanoparticles. For the manufacturing of a respective optical storage medium, the dielectric layer is arranged on the data layer advantageously by means of spin coating. | 03-11-2010 |
20100129585 | PHOTO-INITIATED, NON- AQUEOUS, TEMPERATURE INDEPENDENT GELS, AND METHOD OF PREPARATION THEREOF - A liquid precursor for a gel comprises liquid polyethylene glycol (PEG), a gelling component such as a mixture of acrylic derivatives and optionally a polymerization initiator. A suitable polymerization initiator is the photoinitiator diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide. Gelation may be achieved by irradiation with UV. The resulting gel may be free from water and exhibits high viscosity over a wide range of operating conditions. The gel is suitable for use in an indication device suitable for indicating exposure to an accelerating force above a desired threshold. The indication device may be used to indicate whether an information carrier (such as a computer-readable optical disc) has previously been accessed. | 05-27-2010 |
20110086195 | Method Of Producing Self-Assembled Cubic FePt Nanoparticles And Apparatus Using Same - An apparatus includes a substrate, a magnetically soft underlayer on the substrate, and a plurality of generally cubic FePt nanoparticles on the magnetically soft underlayer, wherein the nanoparticles have a magnetization in a direction substantially normal to a surface of the magnetically soft underlayer. The FePt nanoparticles can have magnetically easy axes perpendicular to the surface of the soft underlayer. | 04-14-2011 |
20110104427 | GLASS SUBSTRATES AND METHODS OF ANNEALING THE SAME - A method for forming a glass substrate comprises the steps of forming a glass blank with opposing substantially planar surfaces and at least one edge, coating the glass blank in silica-alumina nanoparticles, the silica-alumina nanoparticles comprising an inner core of silica with an outer shell of alumina, annealing the coated glass blank to form a conformal coating of silica-alumina around the glass blank, and polishing the coated glass blank to remove the conformal coating of silica-alumina from the opposing substantially planar surfaces thereof. | 05-05-2011 |
20110111159 | PATTERNED MAGNETIC BIT DATA STORAGE MEDIA AND A METHOD FOR MANUFACTURING THE SAME - An improved patterned magnetic bit data storage media and a method for manufacturing the same is disclosed. In one particular exemplary embodiment, the improved patterned magnetic bit data storage media may comprise an active region exhibiting substantially ferromagnetism; and an inactive region exhibiting substantially paramagnetism, the inactive region comprising at least two grains and a grain boundary interposed therebetween, wherein each of the at least two grains contain ferromagnetic material, and wherein the at least two grains are antiferromagnetically coupled. | 05-12-2011 |
20110111160 | Glass Substrate for Information Recording Medium and Information Recording Medium - A glass substrate for information recording medium, said glass substrate being composed of an alminosilicate glass containing 60-75% by mass of SiO | 05-12-2011 |
20110111161 | GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM - A glass substrate for information recording medium, said glass substrate being composed of an alminosilicate glass containing 60-75% by mass of SiO | 05-12-2011 |
20110135866 | INFORMATION RECORDING MEDIUM GLASS SUBSTRATE, INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS AND MANUFACTURING METHOD OF INFORMATION RECORDING MEDIUM GLASS SUBSTRATE - In an information recording apparatus such as a hard disk drive, a ramp for retreating its head from a recording medium when the apparatus is stopped is provided opposing the information recording medium. In such an information recording apparatus, the information recording medium may sometimes collide with the ramp when the apparatus falls down. By inclining a portion opposing the ramp of a glass substrate in the information recording medium, even if the information recording medium strikes the ramp, the information recording medium is prevented from being cracked. | 06-09-2011 |
20110171415 | GLASS SUBSTRATE FOR A MAGNETIC DISK AND MAGNETIC DISK - Provided are a magnetic disk substrate and a method of manufacturing the same, wherein the magnetic disk substrate has very few defects present on its surface with an arithmetic mean roughness (Ra) at a level in the vicinity of 0.1 nm and thus is suitable as a substrate for a magnetic disk with high recording density. The magnetic disk glass substrate is such that the arithmetic mean roughness (Ra) of the main surface of the glass substrate measured using an atomic force microscope with a resolution of 256×256 pixels in a 2 μm×2 μm square is 0.12 nm or less and the number of defects detected to have a size of 0.1 μm to 0.6 μm in plan view and a depth of 0.5 nm to 2 nm is less than 10 per 24 cm | 07-14-2011 |
20120251760 | GLASS SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR PRODUCING THE SAME - A method for producing a glass substrate for a magnetic disk involving the use of a polishing pad having: a first resin foam layer which forms the polishing surface, includes a resin foam having pores with a pore diameter of more than 20 μm and has a thickness of 400 μm or less; and a second resin foam layer which is provided between a platen for fixing the polishing pad and the first resin foam layer, includes a resin foam having pores with a pore diameter of 20 μm or less and has a thickness of 50 to 250 μm, and in which a total thickness of the first resin foam layer and the second resin foam layer is 550 μm or less, and a international rubber hardness degree of the polishing pad measured by the M method according to JIS K6253 is 40 IRHD or more. | 10-04-2012 |
20150024161 | DISK | 01-22-2015 |