公开(公告)号：US20110111262A1

公开(公告)日：2011-05-12

申请号：US12934975

申请日：2009-03-25

申请人： Teiichiro Umezawa ,  Masafumi Ishiyama ,  Tokichiro Sato ,  Kenji Ayama ,  Takahiro Onoue ,  Junichi Horikawa

发明人： Teiichiro Umezawa ,  Masafumi Ishiyama ,  Tokichiro Sato ,  Kenji Ayama ,  Takahiro Onoue ,  Junichi Horikawa

IPC分类号： G11B5/66 ,  B05D5/12 ,  G11B5/667 ,  G11B5/72 ,  G11B5/85 ,  G11B5/851

CPC分类号： G11B5/65 ,  G11B5/84

摘要： An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100). Thus, in a typical structure of the present invention, in the method of manufacturing the perpendicular magnetic recording medium (100) including at least a magnetic recording layer (122b), which is a ferromagnetic layer of a granular structure in which a non-magnetic grain boundary part is formed between crystal grains each grown in a columnar shape, and a medium protective layer (126) with carbon hydride as a main component in this order on a disk base (110), the method includes a magnetic recording layer forming step of forming the magnetic recording layer (122b) so that the grain boundary part contains oxides of a plurality of types and a medium protective layer forming step of forming the medium protective layer (126) in a state where the disk base (110) having the magnetic recording layer (122b) formed thereon is heated at 160 to 200 degrees Celsius.

摘要翻译： 本发明的目的是提供一种制造垂直磁记录介质（100）的方法，其中即使在形成介质保护层时加热也可以在更高的水平上实现矫顽力Hc和可靠性 （126）并提供垂直磁记录介质（100）。 因此，在本发明的典型结构中，在制造至少包括磁记录层（122b）的垂直磁记录介质（100）的制造方法中，所述磁记录层是粒状结构的铁磁层，其中非磁性 在圆盘基体（110）上依次形成以圆柱状生长的晶粒和碳氢化合物作为主要成分的介质保护层（126）之间的晶界部分，该方法包括磁记录层形成步骤 形成磁记录层（122b），使得晶界部分包含多种类型的氧化物和形成介质保护层（126）的介质保护层形成步骤，所述介质保护层形成步骤处于具有 在其上形成的磁记录层（122b）在160至200摄氏度下被加热。

公开(公告)号：US20070160877A1

公开(公告)日：2007-07-12

申请号：US11711669

申请日：2007-02-28

申请人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

发明人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

IPC分类号： G11B5/706 ,  B05D7/00

CPC分类号： C03C3/083 ,  G11B5/7315 ,  G11B5/8404

摘要： A substrate for an information recording medium, which is made of a glass or crystallized glass, (1) which has a region that has a spectral light transmittance of 50% or less converted in terms of a thickness of 2 mm in a wavelength range of 2,750 nm to 3,700 nm, (2) which shows a spectral light transmittance of 70% or less converted in terms of a thickness of 2 mm over whole wavelength range of 2,750 nm to 3,700 nm, (3) which contains an infrared absorbent that is a specific metal oxide and is for use in a perpendicular magnetic recording medium, (4) which is to be heated by irradiation with infrared ray and contains more than 200 ppm of water, or (5) which contains an infrared absorbent that is a specific metal oxide and is used as a substrate to support a multi-layered film including an information recording layer to be formed by sputtering after heating by irradiation with infrared ray, an information recording medium comprising a multi-layered film including an information recording layer formed on any one of the above substrates, and a process for producing an information recording medium.

摘要翻译： 1.一种用玻璃或微晶玻璃制成的信息记录介质用基板，其特征在于，具有在波长范围为2mm的光谱透射率为50％以下的区域 2,750nm至3,700nm的光谱透射率（2），（2）表示在2,750nm至3,700nm的整个波长范围内以2mm的厚度转换70％或更小的光谱透光率，（3）包含红外吸收剂 特定的金属氧化物，用于垂直磁记录介质中，（4）将通过红外线照射加热并含有200ppm以上的水，或（5）其中含有特定的红外吸收剂 金属氧化物，并且用作基板以支持包含通过用红外线照射加热后通过溅射形成的信息记录层的多层膜，信息记录介质包括包含信息记录的多层膜 形成在上述基板上的任何一个上，以及一种信息记录介质的制造方法。

公开(公告)号：US5640089A

公开(公告)日：1997-06-17

申请号：US526646

申请日：1995-09-11

申请人： Junichi Horikawa ,  Hisao Kawai

发明人： Junichi Horikawa ,  Hisao Kawai

IPC分类号： G01B7/00 ,  G01B7/34 ,  G01R33/12 ,  G11B5/00 ,  G11B5/012 ,  G11B5/82 ,  G11B5/84 ,  G11B27/36 ,  G11B33/10 ,  G01N27/72

CPC分类号： G11B5/84 ,  G01B7/34 ,  G01R33/1207 ,  G11B33/10 ,  G11B5/00 ,  G11B5/012 ,  G11B5/82 ,  G11B2005/001 ,  G11B27/36

摘要： A magnetoresistive element is used to detect a surface roughness of an object, such as a magnetic recording medium, a photomask blank, a semiconductor wafer, and is assembled into a reproducing head which moves along a surface of the object and which can produce an electric signal related to the surface roughness. The reproducing head may be incorporated with a recording head into a head unit. The head unit can monitor a magnetic characteristic of the magnetic recording medium in addition to detection of the surface roughness, by recording a predetermined signal by the recording head and by reproducing the predetermined signal by the reproducing head.

摘要翻译： 磁阻元件用于检测诸如磁记录介质，光掩模坯料，半导体晶片的物体的表面粗糙度，并被组装成沿着物体的表面移动的再现头，并且可以产生电 信号与表面粗糙度有关。 再现头可以与记录头并入头单元中。 除了检测表面粗糙度之外，头单元还可以通过由记录头记录预定信号并通过再现头再现预定信号来监测磁记录介质的磁特性。

公开(公告)号：US08623528B2

公开(公告)日：2014-01-07

申请号：US12934975

申请日：2009-03-25

申请人： Teiichiro Umezawa ,  Masafumi Ishiyama ,  Tokichiro Sato ,  Kenji Ayama ,  Takahiro Onoue ,  Junichi Horikawa

发明人： Teiichiro Umezawa ,  Masafumi Ishiyama ,  Tokichiro Sato ,  Kenji Ayama ,  Takahiro Onoue ,  Junichi Horikawa

IPC分类号： G11B5/66

CPC分类号： G11B5/65 ,  G11B5/84

摘要： An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100). Thus, in a typical structure of the present invention, in the method of manufacturing the perpendicular magnetic recording medium (100) including at least a magnetic recording layer (122b), which is a ferromagnetic layer of a granular structure in which a non-magnetic grain boundary part is formed between crystal grains each grown in a columnar shape, and a medium protective layer (126) with carbon hydride as a main component in this order on a disk base (110), the method includes a magnetic recording layer forming step of forming the magnetic recording layer (122b) so that the grain boundary part contains oxides of a plurality of types and a medium protective layer forming step of forming the medium protective layer (126) in a state where the disk base (110) having the magnetic recording layer (122b) formed thereon is heated at 160 to 200 degrees Celsius.

摘要翻译： 本发明的目的是提供一种制造垂直磁记录介质（100）的方法，其中即使在形成介质保护层时加热也可以在更高的水平上实现矫顽力Hc和可靠性 （126）并提供垂直磁记录介质（100）。 因此，在本发明的典型结构中，在制造至少包括磁记录层（122b）的垂直磁记录介质（100）的制造方法中，所述磁记录层是粒状结构的铁磁层，其中非磁性 在圆盘基体（110）上依次形成以圆柱状生长的晶粒和碳氢化合物作为主要成分的介质保护层（126）之间的晶界部分，该方法包括磁记录层形成步骤 形成磁记录层（122b），使得晶界部分包含多种类型的氧化物和形成介质保护层（126）的介质保护层形成步骤，所述介质保护层形成步骤处于具有 在其上形成的磁记录层（122b）在160至200摄氏度下被加热。

公开(公告)号：US07993765B2

公开(公告)日：2011-08-09

申请号：US10898348

申请日：2004-07-26

申请人： Kong Kim ,  Kinobu Osakabe ,  Junichi Horikawa

发明人： Kong Kim ,  Kinobu Osakabe ,  Junichi Horikawa

IPC分类号： G11B5/667 ,  G11B5/66

CPC分类号： G11B5/667 ,  G11B5/7325

摘要： In a perpendicular magnetic recording medium which includes a substrate (1) of a nonmagnetic material, first and second nonmagnetic underlayers (4 and 5) formed on the substrate, and a perpendicular magnetic recording layer (6) formed on the first and the second nonmagnetic underlayers, the first nonmagnetic underlayer is made of an amorphous nonmagnetic metal material containing a metal element which forms a face-centered cubic (fcc) crystal structure by a simple substance. The second nonmagnetic underlayer is formed on the first nonmagnetic underlayer in contact with the first nonmagnetic underlayer and made of a nonmagnetic material containing a hexagonal close packed structure. The perpendicular magnetic recording layer is formed on the second nonmagnetic underlayer in contact with the second nonmagnetic layer.

摘要翻译： 在包括非磁性材料的衬底（1）的垂直磁记录介质中，形成在衬底上的第一和第二非磁性底层（4和5）和形成在第一和第二非磁性材料上的垂直磁记录层（6） 底层，第一非磁性底层由含有通过简单物质形成面心立方（fcc）晶体结构的金属元素的非晶非磁性金属材料制成。 第二非磁性底层形成在与第一非磁性底层接触的第一非磁性底层上，并由含有六方密堆积结构的非磁性材料制成。 垂直磁记录层形成在与第二非磁性层接触的第二非磁性底层上。

公开(公告)号：US07972662B2

公开(公告)日：2011-07-05

申请号：US11711669

申请日：2007-02-28

申请人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

发明人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

IPC分类号： C23C14/00 ,  C23C14/32 ,  B05D3/00 ,  C08J7/18 ,  G21H5/00 ,  B32B17/06

CPC分类号： C03C3/083 ,  G11B5/7315 ,  G11B5/8404

摘要： An information recording medium is prepared by forming a multi-layered film, including an information recording layer, on a substrate by transferring the substrate heated at an average heating rate of at least 10° C./second in a heating zone, along consecutive film-forming zones, and consecutively forming layers forming the multi-layered film in the film-forming zones.

摘要翻译： 通过在基板上形成包含信息记录层的多层膜，通过在加热区中以平均加热速度至少10℃/秒加热的基板沿着连续的膜转移来制备信息记录介质 并且在成膜区域中连续形成形成多层膜的层。

公开(公告)号：US20100209740A1

公开(公告)日：2010-08-19

申请号：US12666561

申请日：2008-09-26

申请人： Kenji Ayama ,  Tokichiro Sato ,  Teiichiro Umezawa ,  Masafumi Ishiyama ,  Junichi Horikawa

发明人： Kenji Ayama ,  Tokichiro Sato ,  Teiichiro Umezawa ,  Masafumi Ishiyama ,  Junichi Horikawa

IPC分类号： G11B5/706

CPC分类号： G11B5/66 ,  G11B5/855

摘要： [Object] The present invention provides a perpendicular magnetic recording medium that can reduce noise by further size reduction and isolation of magnetic grains in a magnetic recording layer and can increase the recording density by improvement of the SNR.[Means for Solution] A typical configuration of a perpendicular magnetic recording medium according to the present invention is a perpendicular magnetic recording medium 100 having a magnetic recording layer 122 with a granular structure in which non-magnetic grain boundary portions are formed between magnetic grains that have grown continuously in a columnar shape, wherein the grain boundary portions contain a plurality of kinds of oxides.

摘要翻译： 本发明提供一种垂直磁记录介质，其可以通过磁记录层中的磁性颗粒的进一步的尺寸减小和隔离来降低噪声，并且可以通过提高SNR来提高记录密度。 [解决方案]根据本发明的垂直磁记录介质的典型配置是具有具有粒状结构的磁记录层122的垂直磁记录介质100，其中在磁性颗粒之间形成非磁性晶界部分， 连续生长成柱状，其中晶界部分含有多种氧化物。

公开(公告)号：US07208238B2

公开(公告)日：2007-04-24

申请号：US10437430

申请日：2003-05-14

申请人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

发明人： Mikio Ikenishi ,  Xuelu Zou ,  Kenji Yamanaka ,  Junichi Horikawa

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： C03C3/083 ,  G11B5/7315 ,  G11B5/8404

摘要： A substrate for a magnetic recording medium made of a glass or crystallized glass which has a specified spectral light transmittance and a process for producing an information recording medium.

摘要翻译： 一种由具有特定光谱透射率的玻璃或结晶玻璃制成的磁记录介质的基板和用于产生信息记录介质的工艺。

公开(公告)号：US4772904A

公开(公告)日：1988-09-20

申请号：US923313

申请日：1986-10-27

申请人： Naoji Otsuka ,  Junichi Horikawa ,  Masaaki Kuroda

发明人： Naoji Otsuka ,  Junichi Horikawa ,  Masaaki Kuroda

IPC分类号： G03B9/02 ,  G03B9/06 ,  G03B9/22

CPC分类号： G03B9/22 ,  G03B9/06

摘要： A diaphragm drive device comprising a first yoke having a plurality of radially extending pole teeth toward the optical axis, a second yoke having a plurality of radially extending pole teeth toward the optical axis, the pole teeth of the first and second yokes alternating each other in a common plane, exciting coils for exciting all the pole teeth of the first and second yokes as held on these yokes, and an apertured disc-like permanent magnet arranged to be rotatable in spaced relation to the plane of the pole teeth of the first and second yokes by a constant axial distance, the magnet being made of a mixture of resin and magnetic materials by molding techniques and magnetized in such a way that the magnetic axes of the domains of the magnetic material are oriented toward only one of the radial surfaces of the disc, wherein the apertured disc-shaped permanent magnet is drivingly connected to the diaphragm blades.

摘要翻译： 一种光阑驱动装置，包括：朝向光轴具有多个径向延伸的极齿的第一磁轭，具有朝向光轴的多个径向延伸的极齿的第二磁轭，第一和第二磁轭的极齿相互交替地彼此交替 公共平面，用于激励保持在这些轭上的第一和第二轭的所有极齿的激励线圈，以及多孔圆盘形永磁体，其布置成可以与第一和第二轭的极齿的平面间隔开地旋转; 第二轭通过恒定的轴向距离，磁体由树脂和磁性材料的混合物通过模制技术制成，并以这样的方式被磁化，使得磁性材料的磁畴的磁轴被定向为仅仅一个径向表面 所述盘，其中所述有孔圆盘形永磁体驱动地连接到所述光阑叶片。