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| Number | Title | Issue Date |
| 7804654 | Transfer method, transfer apparatus, and recording medium A transfer method for transferring asperities formed on a master carrier or transfer information represented by the asperities onto a slave medium, comprises the step of bringing the master carrier on which microscopic asperities are formed into close contact with t... | 09/28/2010 |
| 7787200 | Disk-device correcting system, information managing device, master-disk producing device, and master-disk producing method A master-disk producing device produces a master disk with master-disk identification information added. A disk producing device produces a first disk with the master-disk identification information added, using the master disk with the master-disk identification in... | 08/31/2010 |
| 7710672 | Magnetic transfer holder unit, transfer apparatus, method of manufacturing a transfer medium, and magnetic recording medium A holder unit for use in a transfer apparatus that causes a surface of a transfer master and a surface of a slave medium to be in direct contact with each other and transfers information on the transfer master surface to the slave medium surface. The holder unit inc... | 05/04/2010 |
| 7593174 | Method of manufacturing master recording medium, magnetic transfer method using the manufactured master recording medium, and method of manufacturing magnetic recording medium The present invention provides a method of manufacturing a master recording medium used for magnetic transfer and having a concavo-convex pattern formed on a surface of the recording medium, the method comprising: a surface treatment step of forming the concavo-conv... | 09/22/2009 |
| 7505220 | Magnetic recording medium, recording/reproducing apparatus, and stamper On a magnetic recording medium, a servo pattern is formed in a servo pattern region on at least one surface of a substrate by a concave/convex pattern including a convex part, at least protruding end part of which is formed of magnetic material, and a concave part. ... | 03/17/2009 |
| 7477463 | Master information carrier for magnetic transfer A master information carrier has on its surface a signal area where an embossed pattern formed by protruding portions and recessed portions and representing a signal pattern to be transferred has been formed. The shortest bit length of the embossed patter is 300 nm ... | 01/13/2009 |
| 7471478 | Magnetic disk producing method A magnetic disk can be magnetized simply and in a short time. A magnetic disk producing method produces a magnetic disk having a central hole, an outer radius, a plurality of annular recording tracks formed in a direction from the central hole toward the outer radiu... | 12/30/2008 |
| 7460322 | Magnetic transferring apparatus A magnetic transferring apparatus allows attachment of a first magnet to a first holder. A second magnet is attached to a second holder. The first and second holders are located in a space between first and second magnets. A magnetic disk and a master member are loc... | 12/02/2008 |
| 7443622 | Magnetic recording medium, magnetic recording/reproducing apparatus, and stamper for manufacturing the magnetic recording medium A reliable magnetic recording medium is provided which comprises a servo signal unit portions formed in a concavo-convex shape, easily produced, and resistant to tracking error. Also provided are a magnetic recording/reproducing apparatus which incorporates the magn... | 10/28/2008 |
| 7440207 | Magnetic-transfer method, magnetic recording medium, and magnetic recording device Provided is a method of magnetic transfer. The method includes initially DC-magnetizing a transfer-recipient disc in a circumferential direction, by applying a magnetic field to the transfer-recipient disc in the circumferential direction thereof bringing initially ... | 10/21/2008 |
| 7420757 | Method and apparatus for magnetic transfer A magnetic transfer wherein the exchange of master mediums is made easy to perform is provided, whereby the operational efficiency and transfer efficiency are improved, leading to an overall improvement in productivity in the manufacture of preformatted slave medium... | 09/02/2008 |
| 7371028 | Post mounting system A post mounting system for a body mounted camera mounting system includes a grip to go about the post of the system and a vernier clamp. The vernier clamp includes a vernier ring which is slidable axially and fixed angularly to the grip. A vernier nut threadably eng... | 05/13/2008 |
| 7369337 | Magnetic field application apparatus, magnetic transfer apparatus and method for producing magnetic recording medium A magnetic field application apparatus includes a pair of magnetic field application means, each of which is arranged, at least during application of a magnetic field, on either side of a magnetic field application target so as to face each other, and which generate... | 05/06/2008 |
| 7368186 | Master carrier for magnetic transfer The master carrier for magnetic transfer of the invention comprises a support and a magnetic layer formed on the surface of the support, wherein an uneven transfer pattern that corresponds to the information to be transferred to a magnetic recording medium is formed... | 05/06/2008 |
| 7362524 | Magnetic pattern transfer method A magnetic pattern transfer method is disclosed. A magnetic pattern transfer master having a plurality of magnetic portions preformed with predetermined magnetic patterns is brought in proximity to a magnetic recording medium having a magnetic film to record the mag... | 04/22/2008 |
| 7323258 | Magnetic recording medium and method for manufacturing the same A magnetic recording medium which allows high density recording and has excellent durability can be obtained. A magnetic recording medium includes: a plurality of ferromagnetic material dots arranged on a soft magnetic layer formed on a non-magnetic substrate so as ... | 01/29/2008 |
| 7317594 | Magnetic recording medium, head slider and manufacturing methods therefor A magnetic recording medium and head slider that can furnish excellent head flying stability, a magnetic recording device having excellent head flying stability, and a method for manufacturing, in a short time, a magnetic recording medium and head slider that can fu... | 01/08/2008 |
| 7312940 | Magnetic transfer apparatus A magnetic transfer apparatus is provided with a transfer holder. A master information carrier and a slave medium are accommodated in the transfer holder in an overlapping state where they are opposed to each other and held in close contact with each other. The mast... | 12/25/2007 |
| 7312939 | System, method, and apparatus for forming a patterned media disk and related disk drive architecture for head positioning A solution to the problem of long, e-beam mastering times needed for patterning masters for patterned magnetic disk media is disclosed. A process for fabrication of masters takes advantage of the circular symmetry of magnetic disks and reduces the total required mas... | 12/25/2007 |
| 7267841 | Method for manufacturing single-sided sputtered magnetic recording disks An information-storage media is provided that includes: (a) a substrate disk 312 having first and second opposing surfaces; (b) a first interface layer 304 on the first surface, the first interface la... | 09/11/2007 |
| 7236317 | Magnetic transfer method A magnetic transfer method for transferring a magnetic recording information on a master carrier for magnetic transfer to a slave medium by bringing the master carrier for magnetic transfer with a magnetic layer with magnetic recording information recorded thereon i... | 06/26/2007 |
| 7218466 | Contact printing of magnetic media with mechanically reinforced and/or gas venting stamper An apparatus for performing contact printing of a magnetic transition pattern in a magnetic recording medium, comprising: (a) a stamper/imprinter including a body formed of at least one magnetic material having a high saturation ma... | 05/15/2007 |
| 7218465 | Magnetic media patterning via contact printing utilizing stamper having magnetic pattern formed in non-magnetic substrate A stamper/imprinter for use in forming a magnetic transition pattern in a magnetic material by means of contact printing, comprising: (a) a non-magnetic substrate having a major surface comprising a patterned plurality of spaced-apart recesses with a plurality of no... | 05/15/2007 |
| 7210091 | Recovering track format information mismatch errors using data reconstruction A method, system, and article of manufacture for recovering from a track format error detected by a host computer associated with a storage controller associated with a storage disk array. The recovery method begins with saving a copy of the track format information... | 04/24/2007 |
| 7203014 | Preformat method for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus The magnetic recording and reproducing apparatus reads a transfer clock synchronized with servo information and records a write-once clock pattern in a state where 0 is set as a delay time of the delay device 13 and 1 is set as the dividing ratio of the frequ... | 04/10/2007 |
| 7193796 | Patterned master carrier for magnetic transfer, manufacturing method thereof, magnetic transfer method, recording medium, and magnetic recording and reproduction apparatus A patterned master carrier for magnetic transfer is used to transfer a magnetization pattern, which does not cause a problem such as an error attributable to a subpulse upon signal reproduction, to a slave medium. A signal pattern on a surface of a patterned master ... | 03/20/2007 |
| 7190538 | Master carrier for magnetic transfer, inspecting method thereof, and magnetic recording medium producing method In a master carrier for magnetic transfer which comprises a support that has a transfer-recording pattern arrayed in the track direction thereof in accordance with the information to be transferred to a magnetic recording medium, and a magnetic layer formed on the t... | 03/13/2007 |
| 7187510 | Method of magnetic transfer to flexible medium A signal such as a servo tracking signal is recorded on a flexible slave medium by magnetic transfer. When forming the flexible slave medium of a magnetic strip in a continuous length, the signal is recorded on the magnetic strip by patterned master magnetic transfe... | 03/06/2007 |
| 7151641 | Magnetic transfer master medium, magnetic transfer method, and magnetic transfer master medium forming method A favorable magnetic transfer is performed to a perpendicular magnetic recording medium. A master medium is provided with a substrate on the surface of which protrusion portions, which form a pattern corresponding to the data that is to be transferred, having a plia... | 12/19/2006 |
| 7149042 | Master carrier for magnetic transfer A master carrier for magnetic transfer is equipped with a substrate having a land/groove pattern. The land/groove pattern is formed from a magnetic material and corresponds to information that is transferred to a magnetic recording disk. Each land in the land/groove... | 12/12/2006 |
| 7139140 | Method and apparatus of magnetically transferring information signal from master medium to slave medium When executing a magnetic transfer by bringing a master medium and a slave medium into close contact with each other and applying a transferring magnetic field, a permitted limit of the application direction of the transferring magnetic field is defined so that magn... | 11/21/2006 |
| 7119973 | Magnetic transfer apparatus A magnetic transfer apparatus magnetically transfers information carried by a master information carrier to a slave medium held in close contact with the master information carrier by a holder disposed on the holder support portion of a magnetic transfer apparatus. ... | 10/10/2006 |
| 7115328 | Master disk for transferring magnetic pattern and magnetic recording medium The present invention provides a master disk that can easily be brought into contact with and separated from a magnetic recording medium, and can accommodate foreign matters. This master disk transfers a predetermined magnetic pattern onto a magnetic recording mediu... | 10/03/2006 |
| 7110201 | Master medium for magnetic transfer and magnetic disk and magnetic disk drive A master medium is utilized in a magnetic transfer apparatus. The master medium is superposed on a blank magnetic medium. A predetermined magnetic field is then applied to the master medium. The magnetic flux leaks from the master medium between adjacent magnetic pi... | 09/19/2006 |
| 7110196 | Magnetic transfer method and apparatus A favorable magnetic transfer is performed on a vertical magnetic recording medium. A permanent magnet apparatus employs a transfer magnetic field generating means provided with two columnar permanentmagnets, each having a cross-sectional surface are equal to or gre... | 09/19/2006 |
| 7106531 | Method of forming a servo pattern on a rigid magnetic recording disk A contact magnetic transfer (CMT) method for forming a magnetic pattern, such as the servo pattern on a magnetic recording disk, uses a master template with antiferromagnetically-coupled (AF-coupled) magnetic islands. The template is a rigid or flexible substrate wi... | 09/12/2006 |
| 7105238 | Master information carrier for magnetic transfer A master information carrier has on its surface an irregularity pattern representing information to be magnetically transferred to a magnetic recording medium held in contact with the surface of the master information carrier. The parts of the surface of the master ... | 09/12/2006 |
| 7105280 | Utilizing permanent master for making stampers/imprinters for patterning of recording media A method of manufacturing a stamper/imprinter for use in patterning of a recording medium, comprising sequential steps of: (a) providing a permanent master comprising a body of a substantially rigid material having a surface with a... | 09/12/2006 |
| 7099094 | Magnetic pattern transferring method for performing a magnetic pattern transfer A method for manufacturing a master used for a magnetic transfer, the method including the following steps: A first-master manufacturing step of manufacturing a first master including a predetermined magnetic pattern based on magnetic information; a magnetic-pattern... | 08/29/2006 |
| 7094481 | Master information carrier for magnetic transfer and magnetic transfer method A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the... | 08/22/2006 |
