Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8168309 | Perpendicular recording media with sublayers of oxide dopant magnetic materials Perpendicular recording media with sublayers of dual oxide dopant magnetic materials are disclosed. The magnetic layer may comprise multiple sublayers of magnetic materials. In each sublayer, dual oxide dopants are incorporated. The compositions of the sublayers can... | 05/01/2012 |
| 8110298 | Media for high density perpendicular magnetic recording Perpendicular magnetic recording media having a magnetic capping layer that is exchange coupled to an underlying perpendicular magnetic recording layer. The magnetic coupling layer is a granular layer having a high saturation magnetization (Ms). The perpe... | 02/07/2012 |
| 8105706 | Master servo pattern printer A master is provided for use in a magnetic printing process. Illustratively, the master is used for printing servo patterns on a magnetic recording medium. The master includes a substrate on which a magnetic underlayer material is disposed. A second magnetic materia... | 01/31/2012 |
| 8084149 | Thermally assisted magnetic recording media and magnetic recording and reproducing apparatus Embodiments of the invention provide a thermally assisted magnetic recording medium, which can overcome resistance against thermal fluctuation at RT and write capability, obtain a drastic temperature variation in coercive force at right below the recording temperatu... | 12/27/2011 |
| 8076013 | Magnetic recording medium, magnetic recording medium manufacturing method, and magnetic disk A magnetic recording medium (10) has a substrate (12) and a perpendicular magnetic recording layer (30) formed over the substrate (12). The perpendicular magnetic recording layer (30) has a granular layer (20) in which a mag... | 12/13/2011 |
| 8043733 | Bit patterned medium A bit patterned medium in which an exchange coupling layer induces exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The exchange coupling layer is disposed either over ... | 10/25/2011 |
| 8021769 | Patterned perpendicular magnetic recording medium with exchange coupled recording layer structure and magnetic recording system using the medium A patterned perpendicular magnetic recording medium has discrete magnetic islands, each of which has a recording layer (RL) structure that comprises two exchange-coupled ferromagnetic layers. The RL structure may be an “exchange-spring” RL structure with an uppe... | 09/20/2011 |
| 7993764 | Perpendicular magnetic recording medium and the method of manufacturing the same A perpendicular magnetic recording medium includes a soft magnetic backing layer, an underlayer, a nonmagnetic intermediate layer, and a magnetic recording layer sequentially deposited on a nonmagnetic substrate. The underlayer can contain cobalt, nickel, and iron a... | 08/09/2011 |
| 7989095 | Magnetic layer with nanodispersoids having a bimodal distribution An article comprising a multilayered structure comprising a series of magnetic layers is provided. The magnetic layers comprise a magnetic material, and an insulating layer is disposed between successive magnetic layers. Each magnetic layer has a thickness of at lea... | 08/02/2011 |
| 7927724 | Magnetic recording media with orthogonal anisotropy enhancement or bias layer The recording medium according to the invention has a magnetic recording layer, an exchange coupling layer and an enhancement or bias layer with an anisotropy orthogonal to the recording layer. The enhancement layer is designed to have no significant remanent magnet... | 04/19/2011 |
| 7919201 | Method of making a multilayered magnetic structure A longitudinal magnetic recording medium comprising at least four magnetic layers including a substrate, a CoCrTa magnetic intermediate layer on the substrate, wherein the CoCrTa magnetic intermediate layer comprises Cr | 04/05/2011 |
| 7901801 | Perpendicular magnetic recording medium and magnetic recording apparatus According to one embodiment, a perpendicular magnetic recording medium includes a substrate, and a first magnetic layer and a second magnetic layer formed on the substrate, in which supposing that, for the first and second magnetic layers, respectively, uniaxial mag... | 03/08/2011 |
| 7867637 | Low coupling oxide media (LCOM) A low-coupling perpendicular magnetic recording media comprising a magnetic storage layer and at least one low saturation magnetization layer. The magnetic storage layer has a saturation magnetization between about 400-900 emu/cm3 and the at least one low... | 01/11/2011 |
| 7846563 | Perpendicular magnetic recording exchange-spring type medium with a lateral coupling layer for increasing intergranular exchange coupling in the lower magnetic layer A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The exchange-spring structure is made up of two ferromagnetically exchange-coupled ma... | 12/07/2010 |
| 7781079 | Perpendicular magnetic recording medium, its manufacturing method, and a magnetic storage apparatus A perpendicular magnetic recording medium includes a substrate, a soft magnetic lining layer formed on the substrate, and a recording layer. The recording layer includes a first recording layer, an auxiliary recording layer, and a second recording layer that are lam... | 08/24/2010 |
| 7771852 | Magnetic recording disk with patterned nondata islands of alternating polarity A magnetic recording disk has patterned nondata regions that are used for read/write head positioning and data synchronization. The nondata regions contain nondata islands of magnetizable material separated by nonmagnetic spaces with the nondata islands having alter... | 08/10/2010 |
| 7691499 | Corrosion-resistant granular magnetic media with improved recording performance and methods of manufacturing same A corrosion-resistant granular magnetic recording medium with improved recording performance comprises a non-magnetic substrate having a surface; and a layer stack on the substrate surface, including, in order from the surface: a granular magnetic recording layer; a... | 04/06/2010 |
| 7691500 | Perpendicular magnetic recording medium Embodiments of the present invention help to provide an excellent perpendicular recording medium of high medium signal-to-noise (S/N) and with suppressed blurring in writing. According to one embodiment, a perpendicular recording layer is provided by way of a negati... | 04/06/2010 |
| 7662491 | Method of manufacturing nano-template for a high-density patterned medium and high-density magnetic storage medium using the same Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required. ... | 02/16/2010 |
| 7611783 | Magnetic recording medium and magnetic recording device A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main r... | 11/03/2009 |
| 7592079 | Method to improve remanence-squareness-thickness-product and coercivity profiles in magnetic media A magnetic disk for information storage that includes a substrate and an information layer for containing information. The information layer includes a upper (e.g., recording) and lower (e.g., stabilizing) layers. The information layer has a remanence-squareness-thi... | 09/22/2009 |
| 7588841 | Perpendicular magnetic recording exchange-spring type medium with a lateral coupling layer for increasing intergranular exchange coupling in the lower magnetic layer A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The exchange-spring structure is made up of two ferromagnetically exchange-coupled ma... | 09/15/2009 |
| 7582368 | Perpendicular magnetic recording medium with an exchange-spring recording structure and a lateral coupling layer for increasing intergranular exchange coupling A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The exchange-spring structure is made up of two ferromagnetically exchange-coupled ma... | 09/01/2009 |
| 7524570 | Perpendicular magnetic recording system and medium with high-moment corrosion-resistant “soft” underlayer (SUL) A perpendicular magnetic recording disk has a soft magnetic underlayer (SUL) that has high corrosion resistance as well as high moment. The material of the SUL is an alloy comprising Co, Fe, X, and Y; where X is Ta or Nb, Y is Zr or Hf, and the combined amount of X ... | 04/28/2009 |
| 7504166 | Magnetic recording media having five element alloy deposited using pulsed direct current sputtering CoCrPtB is a conventional material used in some of the layers of a thin film magnetic media structure used for recording data in data storage devices such as hard drives. Typically the CoCrPtB layers used for magnetic media have high Cr and low B in bottom magnetic ... | 03/17/2009 |
| 7431961 | Composite free layer for CIP GMR device In this invention, we replace low resistivity NiFe with high-resistivity FeNi for the FL2 portion of a composite free layer in a CIP GMR sensor in order to minimize current shunting effects while still retaining both magnetic softness and low magnetostriction... | 10/07/2008 |
| 7419729 | Multilayered ferromagnetic laminate having alternating cobalt alloy and iron-nitrogen alloy films for use with magnetic heads A multilayered ferromagnetic laminate includes a first magnetic film having a cobalt alloy and a second magnetic film having an iron-nitrogen alloy. The films are deposited upon one another and laminated to provide a multilayered film structure having an alternating... | 09/02/2008 |
| 7402348 | Perpendicular magnetic recording medium A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular... | 07/22/2008 |
| 7354664 | Magnetically soft, high saturation magnetization laminate of iron-cobalt-nitrogen and iron-nickel for perpendicular media underlayers A magnetic disk has a soft magnetic underlayer comprising a first layer containing NiFe having a concentration of iron that is at least thirty percent and not more than seventy percent; a second layer that adjoins the first layer and contains FeCoN having a concentr... | 04/08/2008 |
| 7353525 | Reliable disk drive and method A durable, reliable high performance drive and method for digitizing, storing and retrieving data from a disk. In a first embodiment, at least one disk and components for spinning the disk, and digitizing, writing and reading data from the disk are covered with a 0.... | 04/01/2008 |
| 7351484 | High field contrast magnetic stampers/imprinters for contact patterning of magnetic media A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization B... | 04/01/2008 |
| 7348077 | Magnetic recording medium and magnetic recording apparatus A magnetic recording medium based on the perpendicular magnetic recording system includes a substrate; a back layer which is formed on the substrate and which is formed of a soft magnetic material; an in-plane magnetized layer which is formed on the back layer and w... | 03/25/2008 |
| 7348078 | Perpendicular magnetic recording medium and magnetic storage apparatus An improved perpendicular magnetic recording medium and an improved magnetic storage apparatus are provided, which are suitable for high speed and high density magnetic recording. A magnetic under layer of a two-layered perpendicular magnetic recording medium includ... | 03/25/2008 |
| 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 |
| 7324305 | Magnetic recording medium including a magnetic layer with first magnetic particles and a protective layer with second magnetic particles The present invention enables a substantial decrease of the magnetic spacing while maintaining the flying height of the transducer and the structure of the protective layers for a magnetic recording device. A magnetic layer containing first magnetic particles is for... | 01/29/2008 |
| 7312951 | Magnetic head for perpendicular magnetic recording The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the... | 12/25/2007 |
| 7300713 | Magnetic thin film media with an underlayer of CrMoZr, CrMoNb or CrMoMn A thin film disk for use in magnetic recording with an underlayer structure that includes a layer of CrMoZr, CrMoNb or CrMoMn is described. The preferred embodiment includes a circumferentially textured glass substrate, a pre-seed layer, a B2 seed layer, an underlay... | 11/27/2007 |
| 7282278 | Tilted recording media with L10 magnetic layer A magnetic recording medium having a magnetic layer with an L10 structure and an easy magnetization axis lying about 35° out-of-plane of the magnetic layer is disclosed. This medium has very high coercivity (Hc) and anisotropy field (Hk), giving rise to ... | 10/16/2007 |
| 7270898 | Polycrystalline structure of ordered alloy and method of making the same Magnetic crystalline grains are spaced from each other on a base layer a polycrystalline structure. The magnetic crystalline grains are made of an ordered alloy. The ordered alloy serves to ensure the crystalline magnetic anisotropy energy larger than that of Co all... | 09/18/2007 |
| 7244287 | Magnetic particle, its production method, magnetic recording medium and its production method The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu3Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing th... | 07/17/2007 |
