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| Number | Title | Issue Date |
| 8164989 | Information recording method and information recording apparatus A recording method for irradiating a multi-layered optical recording medium with a laser beam to record information thereon. The optical recording medium can form a first information recording layer that is the farthest from a light incident surface, a second inform... | 04/24/2012 |
| 7423939 | Method for manufacturing magneto-optical recording medium A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reli... | 09/09/2008 |
| 7376058 | Optical information recording medium containing a plurality of recording layers provided with characteristics to achieve optimum recording conditions An optical information recording medium according to the present invention includes a first information recording layer on which information is to be recorded by laser light; and a second information recording layer on which information is to be recorded by the lase... | 05/20/2008 |
| 7366907 | Information processing device and method and program storage medium An information processing device and method as well as a program storage medium, in which to determine whether or not contents can be recorded on a recording medium, the presence or absence of digital watermark information distributed associated with the contents is... | 04/29/2008 |
| 7361421 | Lubricant, magnetic recording medium and production method of magnetic recording medium A lubricant is obtained by mixing at least one compound selected from specific fluorine-based diester dicarboxylic acid compounds having has two carboxyl groups, two ester bonds, terminal groups each of which is an alkyl group or an alkenyl group, and one fluoroethe... | 04/22/2008 |
| 7263057 | On-groove recordation type optical disc Hardness of a resin substrate of an optical disc is selected to be greater than hardness of a cover layer of the optical disc, at least when information is recorded on the optical disc. A laser beam is transmitted to an organic dye layer of the optical disc through ... | 08/28/2007 |
| 7235313 | Magneto-optical recording medium, method of manufacturing magneto-optical recording medium, method of recording on magneto-optical recording medium, and method of reproduction from magneto-optical recording medium A magneto-optical medium has a recording layer having a plurality of columns extending in a lamination direction, and a reproduction layer which is placed below the recording layer and which functions as a nucleus for the columns. ... | 06/26/2007 |
| 7210155 | Magneto-optical recording medium having in-plane magnetizing layer A high-density magneto-optical recording medium having excellent jitter properties is provided. A pattern-dependent shift of the length of a recorded mark does not occur even when a minute mark has increased sensitivity to a recording magnetic field. A magneto-optic... | 04/24/2007 |
| 7193933 | Preheating bulk erasing device for magneto-optical disk When carrying out magnetization, annealing, and initialization of a recording film by applying a laser beam to the recording film while rotating an optical recording medium 10 by a motor 11, light of a strong visible-light lamp 15 is projected a... | 03/20/2007 |
| 7173884 | Magnetooptic recording medium and its manufacturing method A first dielectric layer 3, a multilayer magnetic film 10 in which a first magnetic layer 4 having perpendicular magnetic anisotropy at room temperature, a second magnetic layer 5 having inplane magnetic anisotropy at room temperature, an... | 02/06/2007 |
| 7169454 | Multi-stack optical data storage medium and use of such medium A description is given of a multi-stack optical data storage medium (20) for rewritable recording using a focused radiation beam (30) entering through an entrance face (16) of the medium (20) during recording. The medium (20) has a... | 01/30/2007 |
| 7166346 | Recording medium having super-resolution near-field structure and method and apparatus for reproducing the same A read-only recording medium for achieving a carrier-to-noise ratio (CNR) using a super-resolution near-field structure (Super-RENS) on which information has been prerecorded includes a substrate having the information recorded on its surface, a reflective layer for... | 01/23/2007 |
| 7090933 | Magneto-optical recording medium including a soft magnetic layer, a protective layer and a silane coupling agent layer, in this order The invention is a magneto-optical recording medium characterized by containing at least a soft magnetic layer, a protective layer, a resin layer having a servo pattern formed thereon, a reflecting film, a lower dielectric material film, a recording film, an upper d... | 08/15/2006 |
| 7058000 | Information recording disc having an anti-reflection layer and information recording/reproducing apparatus An anti-reflection coating layer is formed on the surface portion of a recording medium. This enables to obtain a margin for the air gap thickness change when recording/reproducing an information signal using the “near-field technique” as well as minimize a data... | 06/06/2006 |
| 7035138 | Magnetic random access memory having perpendicular magnetic films switched by magnetic fields from a plurality of directions A magnetization reversal method is a method of applying an external magnetic field to a magnetoresistive film, in which the magnetoresistive film has a structure wherein a nonmagnetic film is placed between magnetic films with an easy axis of magnetization along a p... | 04/25/2006 |
| 6944019 | Integrity monitoring A server blade may comprise a processor and a network interface. The network interface can be configured be connected to a network remote the server blade. The server blade may be configured detect a property of an entity connected to the network. The server blade m... | 09/13/2005 |
| 6934224 | Optical recording medium/system with heat-dissipating and light reflecting layers An optical recording medium and an optical recording and reproduction device including the same, wherein the optical recording medium comprises a substrate, a reflective layer formed on the substrate, a recording layer formed on the reflective layer, a first protect... | 08/23/2005 |
| 6893746 | Magnetic recording medium with high thermal stability, method for producing the same, and magnetic recording apparatus A magnetic recording medium comprises an information-recording film and a ferromagnetic film on a substrate. The information-recording film is composed of, for example, an amorphous ferrimagnetic material having perpendicular magnetization. Further, the ferromagneti... | 05/17/2005 |
| 6879548 | Optical recording medium and production method therefor An optical recording medium is provided which has a reflective film, a lower dielectric film, a recording film and an upper dielectric film stacked in this order on a substrate, and is adapted to receive light from the side of the upper dielectric film and reproduce... | 04/12/2005 |
| 6804822 | Magnetic recording medium and magnetic recording apparatus using same A magnetic recording medium, which includes a substrate and an amorphous magnetic layer, made of an amorphous magnetic material, for magnetic recording of data, is provided with an underlayer between the substrate and the amorphous magnetic layer, the underlayer bei... | 10/12/2004 |
| 6802073 | Magneto-optical recording medium Disclosed are magneto-optical recording media including at least a reflection layer, a recording layer and a dielectric layer laminated on a substrate in this order, wherein the thickness of the dielectric layer is not less than 140 nm or wherein the dielectric laye... | 10/05/2004 |
| 6767697 | Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength A magneto-optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first di... | 07/27/2004 |
| 6767656 | Magneto-optical recording medium and method of reproducing the same A magneto-optical recording medium comprising four magnetic layers including a mask layer, a reproduction layer, an intermediate layer and a recording layer, wherein the reproduction layer and the recording layer each have a direction of easy magnetization extending... | 07/27/2004 |
| 6760279 | Magneto-optical storage apparatus having the relation between numerical aperture and recording medium An object of the present invention is to provide a film-surface light-incident type magneto-optical recording medium which is used by means of an objective lens having a large NA value and is excellent in productivity and yield, and a magneto-optical recording appar... | 07/06/2004 |
| 6727007 | Magneto-optical recording medium with reflective layer formed from two thin films possessing different surface tensions A magneto-optical recording medium includes at least a reflective layer and a recording layer formed in this order on a substrate, in which record and reproduction of information are carried out by irradiating the medium with laser beam from a recording layer side. ... | 04/27/2004 |
| 6545955 | Magneto-optic storage media and methods of reproducing the same The magneto-optical storage medium includes: a reproduction layer exhibiting in-plane magnetization at room temperature and changing to perpendicular magnetization above a transition temperature Tp1; a first in-plane magnetized layer disposed adjacent the repr... | 04/08/2003 |
| 6477135 | Optical information recording medium and method for recording and reproduction information thereon An optical information recording medium includes a recording layer that changes reversibly between a crystalline state and an amorphous state. The irradiation of the recording layer with laser beams at a predetermined wavelength changes the recording laye... | 11/05/2002 |
| 6463016 | Magneto-optical storage medium having in-plane magnetized layers A magneto-optical recording medium according to the present invention includes a reproducing layer having in-plane magnetization at room temperature and shifting to have perpendicular magnetization at temperatures at and above a critical temperature, a fi... | 10/08/2002 |
| 6449221 | Storage media for optical storage systems Magneto-optical storage media designed for optical storage systems such as disk drives with optical flying heads. Dielectric layers are designed and implemented to maximize optical coupling between the flying optical head and the media and to reduce varia... | 09/10/2002 |
| 6418089 | REPRODUCTION APPARATUS AND REPRODUCTION METHOD PROVIDING REDUCED POWER CONSUMPTION, EVEN WHEN USING MAGNETICALLY INDUCED SUPER RESOLUTION (MSR), BY NOT APPLYING BIASED MAGNETIC FIELD TO RECORDING MEDIUM DURING STILL OPERATION A bias magnet (magnetic head) is driven when data is read from an MSR disk. When data reading is awaited in a condition in which "reproduction still" is turned on, the bias magnet is not driven.... | 07/09/2002 |
| 6324131 | Low glide magneto-optical recording medium Low glide magneto-optical (LGMO) information storage and retrieval media having improved tribological properties when used in ultra-high density storage/retrieval devices employing very small head flying heights on the order of less than about 1 microinch... | 11/27/2001 |
| 6301200 | Magneto-optical data storage disc with highly conductive, smooth reflector layer An air-incident, optical data storage medium has a substrate, a reflector layer, a magneto-optic recording layer, and a protective layer. The reflector later has at least one of an electrical conductivity greater than about 5.0×104 (Ω-cm) | 10/09/2001 |
| 6278668 | Magneto-optical storage media A magneto-optical storage medium includes: a reproduction layer exhibiting an in-plane magnetization state at room temperature and changing to a perpendicular magnetization state at a transition temperature Tp1; a supplementary reproduction layer exhibiting an... | 08/21/2001 |
| 6262949 | Multilayer resonance device and magneto-optical recording medium with magnetic center layer of a different thickness than that of the components of the reflecting layers A multilayer resonance device of the invention includes regularly stacked layers each formed by alternately stacking a magnetic substance and a dielectric substance with thickness regularity, and an irregular layer including a magnetic substance, having a... | 07/17/2001 |
| 6228482 | Magneto-optic recording medium with reduced demagnetizing field threshold A magneto-optic recording medium having a reduced demagnetizing field threshold incorporates a thin recording layer having a thickness of less than or equal to approximately 15 nm, and preferably less than or equal to approximately 12 nm. The recording me... | 05/08/2001 |
| 6198704 | Magneto-optical recording medium A magneto-optical recording medium from which data is read by using a Kerr effect and which is capable of preventing signal imbalance caused from change in birefringence even in a system in which the amplitude of a reproduced signal is small and the spati... | 03/06/2001 |
| 6132862 | Magneto-optical recording medium A magneto-optical recording medium comprising a light-transmitting substrate 1 on which a dielectric layer 2, a memory layer 3 having perpendicular magnetic anisotropy, an intermediate layer 4 having in-plane magnetic anisotropy or slight perpendicular ma... | 10/17/2000 |
| 6120921 | Magneto-optical recording medium The magneto-optical recording medium of the present invention has a triple-layer magnetic laminate on the surface side of the substrate, and the magnetic laminate comprises an amplification layer A1, an exchange coupling control layer C12 | 09/19/2000 |
| 6086993 | Magneto-optical recording medium A magneto-optical recording medium capable of direct overwriting in a light intensity modulation mode comprises a magnetic multilayer structure comprising, in order form an surface side thereof, a readout layer R01, a memory layer M1... | 07/11/2000 |
| 6088203 | Three position magnetic head vertical movement device A magnetic head vertical movement device for a magnetic-optical recording and/or reproducing apparatus for use with a disk cartridge, within which a magneto-optical disc is accommodated. The device includes a vertical movement drive mechanism for a magnet... | 07/11/2000 |
