Patent application number | Description | Published |
20100033873 | MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING REPRODUCING APPARATUS - In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure. | 02-11-2010 |
20100039730 | MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THE SAME, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium | 02-18-2010 |
20100188772 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - There are provided a method for manufacturing a magnetic recording medium which is excellent in terms of both the recording and reproduction characteristics and the thermal fluctuation characteristics without reducing the density and hardness of the perpendicular magnetic layer; a magnetic recording medium; and a magnetic recording and reproducing apparatus with which an excellent recording density is achieved, | 07-29-2010 |
20100195246 | MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING APPARATUS - There is provided a manufacturing method of a magnetic recording medium that maintains a high level of perpendicular orientation of a perpendicular magnetic layer and enables to further increase high recording density, prepared such that at least on a non-magnetic substrate, there are laminated a soft magnetic base layer, an orientation control layer | 08-05-2010 |
20100209736 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE - One object of the present invention is to provide a method for easily providing an ECC type magnetic recording medium with low cost, which is easily designed, and the present invention provides a perpendicular magnetic recording medium including at least a soft magnetic backing layer, an under layer, an intermediate layer, and a perpendicular magnetic recording layer on a non-magnetic substrate, wherein the perpendicular magnetic recording layer includes at least one of a main recording layer and an auxiliary recording layer, the main recording layer includes a layer having perpendicular magnetic anisotropy, the auxiliary recording layer is a multilayer including three or more of a soft magnetic layer and a non-magnetic layer which are layered alternately, and the outermost layer to the non-magnetic substrate is the soft magnetic layer. | 08-19-2010 |
20110111257 | MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A magnetic recording medium is provided which can record and reproduce high-density information by maintaining perpendicular orientation of a magnetic recording layer even with a decrease in thickness of nonmagnetic layers from an intermediate layer to a seed layer while decreasing the grain size of magnetic crystal grains to be consistent with an increase in recording density. A manufacturing method thereof and a magnetic recording and reproducing apparatus are also provided. The magnetic recording medium is a perpendicular magnetic recording medium including at least an underlying layer, an orientation control layer, a magnetic recording layer, and a protective layer formed on a nonmagnetic substrate. Here, the orientation control layer includes two or more layers of a seed layer and an intermediate layer from the substrate side. Materials of the seed layer and the intermediate layer are selected so that a contact angle of the intermediate layer material with respect to the seed layer material, which is amorphous, is in the range of 10 to 100 degrees. | 05-12-2011 |
20110151280 | PERPENDICULAR MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCING THE SAME, AND MAGNETIC RECORDING/REPRODUCING DEVICE - A perpendicular magnetic recording medium including at least a soft under layer, an orientation control layer, a magnetic recording layer and a protective layer on a non-magnetic substrate, wherein the orientation control layer is composed of three or more layers including a seed layer, a first intermediate layer and a second intermediate layer sequentially, formed in that order from the substrate side, the crystal grains that constitute the first intermediate layer are epitaxially grown on the crystal grains of the seed layer, the crystal grains that constitute the second intermediate layer are epitaxially grown on the crystal grains of the first intermediate layer, and the crystal grains that constitute the second intermediate layer are finer than the crystal grains that constitute the first intermediate layer. | 06-23-2011 |
20120113768 | HEAT-ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE - A heat-assisted magnetic recording medium that includes a substrate | 05-10-2012 |
20120250186 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A method for manufacturing a magnetic recording medium including at least a non-magnetic substrate, a soft magnetic underlayer, an orientation control layer that controls an orientation of an immediate upper layer, and a perpendicular magnetic layer in which a magnetization easy axis is mainly perpendicularly oriented with respect to the non-magnetic substrate so as to be laminated one another on the non-magnetic substrate. The perpendicular magnetic layer includes two or more magnetic layers, and each layer is subjected to a crystal growth such that each crystal grain composing each magnetic layer forms a columnar crystal continuous in a thickness direction together with the crystal grains composing the orientation control layer. The orientation control layer, formed of a Co—Cr alloy, is formed by the reactive sputtering using a mixture of a sputtering gas and nitrogen. | 10-04-2012 |
20120300600 | THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE - A thermally assisted magnetic recording medium having a structure in which a first magnetic layer | 11-29-2012 |
20140063656 | MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THE SAME, AND MAGNETIC RECORDING AND REPRODUCING DEVICE - Provided is a magnetic recording medium which maintains high vertical orientation of a vertical magnetic layer, and which is capable of realizing high recording densification. In the magnetic recording medium, at least a soft magnetic underlying layer ( | 03-06-2014 |
Patent application number | Description | Published |
20100182714 | THERMAL-ASSIST MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A thermal-assist magnetic recording medium is provided which can accomplish a surface recording density of 1 Tbit/inch | 07-22-2010 |
20100209741 | PERPENDICULAR MAGNETIC RECORDING MEDIUM, PROCESS FOR PRODUCTION THEREOF, AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - A perpendicular magnetic recording medium is provided, which has a soft magnetic layer, an under layer, an intermediate layer and a perpendicular magnetic recording layer, and is characterized in that the perpendicular magnetic recording layer is comprised of at least one magnetic layer, which magnetic layer or at least one of which magnetic layers comprises cobalt-based ferromagnetic crystal grains and grain boundaries comprised of an oxide, wherein the ferromagnetic crystal grains further comprise ruthenium. The perpendicular magnetic recording medium has ferromagnetic crystal grains with extremely small grain size and exhibiting enhanced discretion, as well as good perpendicular orientation in the perpendicular magnetic recording layer, and thus, the medium is capable of recording and reproducing information with high density. | 08-19-2010 |
20110205862 | THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING STORAGE - Disclosed is a thermally assisted magnetic recording medium comprising a substrate, a plurality of underlayers formed on the substrate, and a magnetic layer which is formed on the underlayers and predominantly comprised of an alloy having a L1 | 08-25-2011 |
20110235479 | THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING STORAGE - Disclosed is a thermally assisted magnetic recording medium comprising a substrate, a plurality of underlayers formed on the substrate, and a magnetic layer which is formed on the underlayers and predominantly comprised of an alloy having an L1 | 09-29-2011 |
20110293966 | MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A magnetic recording medium which has been made by forming at least one magnetic layer having a granular structure on a substrate by sputtering, wherein said at least one magnetic recording layer having a granular structure comprises magnetic grains separated from each other by an oxide, and is made by sputtering a target comprising cobalt oxide and substantially free from metallic chromium and a chromium alloy. The magnetic grains in the granular structure have an average grain diameter of not larger than 6 nm, and are separated from each other by the oxide with a grain boundary width of at least 1.5 nm. The magnetic grains are minute and separated from each other with an enhanced grain boundary width, and the magnetic recording medium exhibits an enhanced recording density and improved electromagnetic conversion characteristics. | 12-01-2011 |
20120307398 | THERMALLY ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE - Disclosed is a thermally assisted magnetic recording medium comprising a substrate, a plurality of underlayers formed on the substrate, and a magnetic layer which is formed on the underlayers and predominantly comprised of an alloy having a L1 | 12-06-2012 |
20130194901 | HEAT-ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND READING APPARATUS - The heat-assisted magnetic recording medium of the present invention has a substrate, an under layer formed on the substrate, and a magnetic layer formed on the under layer, in which the magnetic layer includes an alloy having a L1 | 08-01-2013 |
Patent application number | Description | Published |
20110222649 | X-RAY CT APPARATUS AND CONTROL METHOD FOR X-RAY CT APPARATUS - An X-ray CT apparatus has an X-ray source, an X-ray detector, a temperature sensor, a data acquisition unit and a controller. The X-ray source generates an X-ray. The X-ray detector detects the X-ray. The temperature sensor detects a temperature of the X-ray detector. The data acquisition unit acquires data from the X-ray detector. The controller controls a temperature of the X-ray detector through adjustment of a workload of the data acquisition unit during a non-scanning time. | 09-15-2011 |
20120033784 | X-RAY DETECTOR AND X-RAY COMPUTER TOMOGRAPHY SCANNER - According to one embodiment, an X-ray detector includes a plurality of detection packs and a plurality of heaters. Each of the detection packs includes a plurality of detection elements that detect X rays having passed through a subject and output a detection signal corresponding to the X rays and is arranged along a predetermined direction. Each of the heaters is provided corresponding to each of the detection packs and individually controls the temperature of each of the detection packs. | 02-09-2012 |
20130010921 | X-RAY COMPUTED TOMOGRAPHY APPARATUS AND RADIATION DETECTOR - According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a detector, a first DAS, and a second DAS. The radiation detector includes a plurality of detection elements. Each detection element repeatedly detects X-rays generated by the X-ray tube and transmitted through a subject and repeatedly generates an electrical signal corresponding to the energy of the repeatedly detected X-rays. The first DAS acquires the electrical signal detected by part of the imaging region of each detection element in the integral mode. The second DAS acquires the electrical signal detected by the other part of the imaging region of each detection element in the photon count type mode. | 01-10-2013 |