| Patent Number |
Title Of Patent |
Date Issued |
| 7561360 |
Magnetic recording medium |
July 14, 2009 |
| A magnetic recording medium includes a substrate and a recording layer formed on the substrate. The recording layer is provided with a plurality of information tracks each having a track servo signal region and a user data region. Adjacent information tracks are separated by non-magnetic |
| 7548398 |
Thermally assisted magnetic recording medium |
June 16, 2009 |
| A thermally assisted magnetic recording medium includes a substrate having a first surface and a second surface opposite to the first surface. A recording layer is formed on the first surface of the substrate. A plurality of thermally conductive regions are provided at the first surf |
| 7502188 |
Magnetic recording medium, magnetic storage and method for reproducing information from magnetic |
March 10, 2009 |
| A magnetic recording medium includes a first magnetic layer; and a second magnetic layer formed on the first magnetic layer. The first magnetic layer and the second magnetic layer make exchange coupling therebetween and also, have their magnetizing direction in anti-parallel to one a |
| 7144641 |
Magnetic backlayer |
December 5, 2006 |
| This invention relates to a magnetic backlayer, and provides a magnetic backlayer giving a small spike noise spk and a small media noise Nm and exhibiting a large saturation magnetization Ms to have a good soft magnetic property. The magnetic backlayer is formed on a substrate; has a |
| 6928033 |
Magneto-optical recording medium having a plurality of heat-radiation films |
August 9, 2005 |
| A magneto-optical recording medium includes a heat-radiation film and a magnetic film exhibiting magnetic anisotropy in a direction vertical to a surface of the magnetic film. The heat-radiation film is formed between a substrate and the magnetic film and is formed of a plurality of allo |
| 6898158 |
Information recording medium and information recording and reproducing slider |
May 24, 2005 |
| An information recording medium including an information recording film made of an exchange-coupled multilayer film capable of magnetically reproducing a recorded information, wherein the exchange-coupled multilayer film has a coercive force which is not substantially changed at a te |
| 6898157 |
Optical head having a plurality of coil elements connected in parallel to each other |
May 24, 2005 |
| A coil assembly includes a coil arranged around a vertical axis, and a supporting member for carrying the coil. The supporting member is formed with a through hole corresponding to the vertical axis. The coil includes a plurality of coil elements which are connected in parallel. |
| 6865039 |
Master medium for magnetic transfer, magnetic transferring and recording method, slave medium fo |
March 8, 2005 |
| A master medium for magnetic transfer includes a substrate having a concave portion formed in its surface corresponding to a pattern of recorded information to be transferred; a first perpendicular ferromagnetic layer deposited in the concave portion; and a second perpendicular ferromagn |
| 6727007 |
Magneto-optical recording medium with reflective layer formed from two thin films possessing dif |
April 27, 2004 |
| 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. The reflective layer i |
| 6720075 |
Magnetic recording medium and magnetic recording medium driver for the medium with N-type ferrim |
April 13, 2004 |
| A magnetic recording medium stable against heat of which high density recording can be attained is provided by employing a magnetic material such that coercive magnetic force in a recording magnetic layer increases with temperature rise. The magnetic recording medium is one in which the |
| 6687197 |
High density information recording medium and slider having rare earth metals |
February 3, 2004 |
| An information recording medium comprising an information recording film formed on a base on which regular depressions and projections having Ra of 0.1 to 1.5 nm have been formed, the information recording film containing as a major component a rare earth-transition metal amorphous alloy |
| 6567347 |
Optical head having a plurality of coil elements connected in parallel to each other |
May 20, 2003 |
| A coil assembly includes a coil arranged around a vertical axis, and a supporting member for carrying the coil. The supporting member is formed with a through hole corresponding to the vertical axis. The coil includes a plurality of coil elements which are connected in parallel. |
| 6421303 |
MULTILAYER RESONANCE DEVICE AND MAGNETO-OPTICAL RECORDING MEDIUM WITH MAGNETIC CENTER LAYER OF A |
July 16, 2002 |
| 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 thickness disaccording with the |
| 6396774 |
Information reproducing device, information recording/reproducing head, and information reproduc |
May 28, 2002 |
| An information reproducing head which uses a magnetic-substance chip having mono-magnetic domain structure as an information reproducing device so that information, which has been recorded on an information recording medium with a high density, can be copied in an enlarged manner and |
| 6356516 |
Magneto-optical recording medium and reproducing method for information recorded on the medium |
March 12, 2002 |
| A magneto-optical recording medium capable of perfectly masking a mark adjacent to a mark to be reproduced thereby improvng reproduction output. The magneto-optical recording medium includes a transparent substrate, a magnetic reproducing layer laminated on the transparent substrate, a |
| 6262949 |
Multilayer resonance device and magneto-optical recording medium with magnetic center layer of a |
July 17, 2001 |
| 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 thickness disaccording with the |
| 6248439 |
Magneto-optical recording medium and reproducing method for information recorder on the medium |
June 19, 2001 |
| A magneto-optical recording medium capable of perfectly masking a mark adjacent to a mark to be reproduced thereby improving a reproduction output. The magneto-optical recording medium includes a transparent substrate, a magnetic reproducing layer laminated on the transparent substra |
| 6139980 |
Reading method of reading information from a recording medium and medium used therefor |
October 31, 2000 |
| An information recording medium and a reading method thereof for realizing high density recording and recording/reading a direction of magnetization at minute bit length and bit width, which comprises a substrate having a first magnetic layer which is capable of thermo-magnetically recor |
| 6128254 |
Magneto-optical recording medium and reproducing method for information recorded on the medium |
October 3, 2000 |
| A magneto-optical recording medium composed of a plurality of magnetic layers including a rare earth metal and a transition metal as main components. The magneto-optical recording medium includes a magnetic reproducing layer having an easy axis of magnetization perpendicular to a fil |
| 6096444 |
Magneto-optical recording medium capable of double mask readout |
August 1, 2000 |
| A magneto-optical recording medium of a three-layered structure (consisting of a readout layer, an intermediate layer, and a recording layer), capable of double-mask magnetically-induced super-resolution readout, has magnetic properties such that the exchange coupled force between the readou |
| 6030716 |
Magneto-optical recording medium and method of reproducing information recorded on such medium |
February 29, 2000 |
| A magneto-optical recording medium adapted for reproduction of a high resolution signal without the necessity of a reproducing magnetic field. The magneto-optical recording medium comprises a transparent substrate and deposits of a reproducing layer, a switch layer and a recording layer |
| 6020079 |
Magneto-optical recording medium and reproducing method for information recorded on the medium |
February 1, 2000 |
| A magneto-optical recording medium capable of performing magnetically induced super resolution reproduction by perfectly masking a mark adjacent to a mark to be reproduced. The magneto-optical recording medium includes a transparent substrate, a magnetic reproducing layer laminated on th |
| 5740133 |
Magneto-optical recording medium capable of double mask readout |
April 14, 1998 |
| A magneto-optical recording medium of a three-layered structure (consisting of a readout layer, an intermediate layer, and a recording layer), capable of double-mask magnetically-induced super-resolution readout, has magnetic properties such that the exchange coupled force between the re |
| 5723227 |
Magneto-optical recording medium and reproducing method for information recorded on the medium |
March 3, 1998 |
| A magneto-optical recording medium capable of performing magnetically induced super resolution reproduction by perfectly masking a mark adjacent to a mark to be reproduced. The magneto-optical recording medium includes a transparent substrate, a magnetic reproducing layer laminated on th |
| 5691072 |
Magneto-optical recording medium and method of reproducing information recorded on such medium |
November 25, 1997 |
| Disclosed is a magneto-optical recording medium adapted for reproduction of a high resolution signal without the necessity of a reproducing magnetic field, whereby the magneto-optical recording medium comprises a transparent substrate, a reproducing layer, a switch layer and a recording |
| 5623458 |
Method for reproducing information data recorded on a magneto-optical device having plural magne |
April 22, 1997 |
| A method for reproducing information recorded on a magneto-optical recording medium that includes a transparent substrate, a first magnetic layer laminated on the transparent substrate, a second magnetic layer laminated on the first magnetic layer, and a third magnetic layer laminate |
| 5599605 |
Magneto-optical recording medium and method for producing the same |
February 4, 1997 |
| A magneto-optical recording medium having a recording layer made of a bismuth-substituted garnet and deposited by a sputtering over an amorphous substrate of aluminosilicate or borosilicate glass, the recording medium including a garnet underlayer of either a double-layer or single-layer |
| 5548576 |
Optical recording medium and data reproducing apparatus for reproducing data from such optical r |
August 20, 1996 |
| An optical recording medium from which data is reproduced by use of a light beam scanning the optical recording medium, the optical recording medium has a recording area on which marks each of which has an optical singularity are formed at a density so that a plurality of marks is in |
| 5381396 |
Magneto-optical recording method and apparatus for recording information on a magneto-optical re |
January 10, 1995 |
| A process for recording information on a magneto-optical recording medium according to a (2, 7) RLL modulated signal includes a step of setting an optical power of a laser beam to a high level state in response to a logic value "1" and a step of alternately switching the optical power of |
