公开(公告)号：US06824835B2

公开(公告)日：2004-11-30

申请号：US10317077

申请日：2002-12-12

Applicant: Hitoshi Noguchi ,  Kazuhiro Niitsuma

Inventor： Hitoshi Noguchi ,  Kazuhiro Niitsuma

IPC: G11B584

CPC classification number: B82Y10/00 ,  G11B5/59633 ,  G11B5/7021 ,  G11B5/7085 ,  G11B5/743 ,  G11B5/865

Abstract: A flexible magnetic recording medium to which data is transferred by being brought into intimate contact with a master carrier which has a land/groove pattern corresponding to the data and also has a surface whose Moh's hardness is 6 to 10. The magnetic recording medium includes a substrate, a non-magnetic layer, and a magnetic layer. The non-magnetic layer and the magnetic layer are coated on the substrate in the recited order. The magnetic layer contains an abrasive comprising diamond particles whose average particle size is 0.03 to 0.5 &mgr;m. The diamond particle content of the abrasive is in a range of 0.1 to 5 wt % of ferromagnetic powder contained in the magnetic layer.

Abstract translation: 通过与主载体紧密接触而传送数据的柔性磁记录介质，主载体具有对应于数据的焊盘/凹槽图案，并且还具有莫氏硬度为6至10的表面。磁记录介质包括 衬底，非磁性层和磁性层。 非磁性层和磁性层按顺序涂覆在基片上。 磁性层含有平均粒径为0.03〜0.5μm的金刚石颗粒的研磨剂。 研磨剂的金刚石颗粒含量在磁性层中所含的铁磁性粉末的0.1〜5重量％的范围内。

公开(公告)号：US06790522B2

公开(公告)日：2004-09-14

申请号：US10252417

申请日：2002-09-24

Applicant: Nobuo Yamazaki ,  Hitoshi Noguchi ,  Shinji Saito

Inventor： Nobuo Yamazaki ,  Hitoshi Noguchi ,  Shinji Saito

IPC: G11B5712

CPC classification number: G11B5/70678 ,  G11B5/712

Abstract: A magnetic recording medium comprising a support having provided thereon a magnetic layer containing a barium ferrite powder dispersed in a binder, wherein the concentration of Ba of the extract obtained by the following condition is 20 ppm or less per m2 of the magnetic recording medium: condition: 0.05 m2 of the magnetic recording medium is arbitrarily cut out and put in a 200 ml beaker with 100 ml of distilled water, the beaker is covered with a watch glass and retained in a constant temperature bath at 75° C. for 3 hours.

Abstract translation: 一种磁记录介质，包括在其上设置有分散在粘合剂中的铁氧体粉末的磁性层的支撑体，其中通过以下条件获得的提取物的Ba浓度为每m 2磁记录20ppm以下 介质：条件：将0.05m 2的磁记录介质任意切出，并用100ml蒸馏水放入200ml烧杯中，用手表玻璃覆盖烧杯，并保持在75℃的恒温浴中 C. 3小时。

公开(公告)号：US06713149B2

公开(公告)日：2004-03-30

申请号：US10194245

申请日：2002-07-15

Applicant: Takeshi Harasawa ,  Hitoshi Noguchi ,  Shinji Saito

Inventor： Takeshi Harasawa ,  Hitoshi Noguchi ,  Shinji Saito

IPC: G11B5706

CPC classification number: G11B5/70 ,  G11B5/70678 ,  G11B5/714 ,  Y10T428/12951 ,  Y10T428/12993 ,  Y10T428/249953 ,  Y10T428/249979 ,  Y10T428/257 ,  Y10T428/265

Abstract: A magnetic recording medium is disclosed, comprising a support having provided thereon a magnetic layer containing a ferromagnetic powder and a binder as main components, wherein the ferromagnetic powder is a hexagonal ferrite powder having an average tabular diameter of from 15 to 40 nm, the perpendicular factor of squareness ratio SQ of the magnetic layer is from 0.1 to 0.55, the specific surface area and the total pore volume per weight of the magnetic layer by a nitrogen adsorption method are from 0.1 to 50 m2/g and from 0.001 to 1 ml/g, respectively, and the magnetic layer thickness is from 0.02 to 0.3 &mgr;m.

Abstract translation: 公开了一种磁记录介质，包括一个在其上提供了含有铁磁粉末和粘结剂作为主要成分的磁性层的载体，其中铁磁粉末是平均片状直径为15至40nm的六方铁氧体粉末，垂直于 磁性层的矩形比SQ的因子为0.1〜0.55，通过氮吸附法的磁性层的比表面积和总细孔容积为0.1〜50m 2 / g，0.001〜 1ml / g，磁性层厚度为0.02〜0.3μm。

公开(公告)号：US06506470B2

公开(公告)日：2003-01-14

申请号：US09855574

申请日：2001-05-16

Applicant: Takeshi Harasawa ,  Hiroshi Hashimoto ,  Hitoshi Noguchi ,  Shinji Saito

Inventor： Takeshi Harasawa ,  Hiroshi Hashimoto ,  Hitoshi Noguchi ,  Shinji Saito

IPC: G11B5708

CPC classification number: G11B5/71 ,  G11B5/708 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265

Abstract: The present invention provides a magnetic recording medium having high electromagnetic transfer characteristics in a high-density recording medium. The invention provides a magnetic recording medium, which comprises a nonmagnetic primer layer placed on a nonmagnetic support member and at least one layer of magnetic layers with ferromagnetic powder dispersed in a binder, said magnetic layer being placed on said primer layer, whereby diamond particles with average particle size of 0.05 to 1 &mgr;m are added to the magnetic layer, and at least one type of compound selected from the following genera formulae (1) and (2) is contained: where R1 represents an alkyl group having 1 to 2 carbon atoms; and R2, R3 and R4 each represents a hydrocarbon group having 4 to 21 carbon atoms.

Abstract translation: 本发明提供一种在高密度记录介质中具有高电磁传递特性的磁记录介质。 本发明提供了一种磁记录介质，其包括放置在非磁性支撑构件上的非磁性底漆层和分散在粘合剂中的铁磁粉末的至少一层磁性层，所述磁性层置于所述底漆层上，由此金刚石颗粒与 将平均粒径为0.05〜1μm的粒子添加到磁性层中，并且含有至少一种选自下列通式（1）和（2）的化合物：其中R 1表示具有1至2个碳原子的烷基 ; 并且R 2，R 3和R 4各自表示碳原子数为4〜21的烃基。

公开(公告)号：US06295253B1

公开(公告)日：2001-09-25

申请号：US09666549

申请日：2000-09-21

Applicant: Kenichiro Mitani ,  Naoyuki Takagi ,  Hitoshi Noguchi ,  Atsushi Yamaguchi ,  Hiroki Ishida

Inventor： Kenichiro Mitani ,  Naoyuki Takagi ,  Hitoshi Noguchi ,  Atsushi Yamaguchi ,  Hiroki Ishida

IPC: G11B1100

CPC classification number: G11B20/10 ,  G11B11/1051 ,  G11B11/10515 ,  G11B11/10534 ,  G11B11/1055 ,  G11B27/19 ,  G11B27/24 ,  G11B2220/2525

Abstract: When recording a recorded signal consisting of “01011001110” in a magnetooptical recording medium, (1,1) corresponding to a domain of 2T is converted to (1,0,1), and (0,0) is converted to (0,1,0) in the recorded signal. In other words, the first “1” of (1,1) is converted to unit bits “1,0” and the first “0” of (0,0) is converted to unit bits “0,1”. Similarly, the first “1” of (1,1,1) corresponding to a domain of 3T is converted to unit bits “1,0”, and the second “1” is converted to unit bits “1,0”. “1” or “0” of the final unit bit is not converted but recorded as such. Consequently, a signal can be correctly reproduced by extension ally transferring domains having different domain lengths from a recording layer to a reproducing layer under the same reproducing conditions.

Abstract translation: 当在磁光记录介质中记录由“01011001110”组成的记录信号时，对应于2T的域的（1,1）被转换为（1,0,1），（0,0）被转换为（0， 1,0）记录信号。 换句话说，（1,1）的第一个“1”被转换为单位比特“1,0”，（0,0）的第一个“0”被转换为单位比特“0,1”。 类似地，对应于3T的域的（1,1,1）的第一“1”被转换为单位比特“1,0”，第二“1”被转换为单位比特“1,0”。 最终单位位的“1”或“0”不转换而是被记录。 因此，通过在相同的再现条件下将具有不同域长度的域从记录层延伸到再现层，可以正确地再现信号。

公开(公告)号：US5876824A

公开(公告)日：1999-03-02

申请号：US872371

申请日：1997-06-10

Applicant: Hitoshi Noguchi ,  Shinji Saitoh

Inventor： Hitoshi Noguchi ,  Shinji Saitoh

IPC: G11B5/66 ,  G11B5/70 ,  G11B5/706 ,  G11B5/73

CPC classification number: G11B5/70 ,  G11B5/70615 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24975 ,  Y10T428/25 ,  Y10T428/256

Abstract: A magnetic recording disk favorably employable in a magnetic recording and reproducing method in which a magnetic recording disk is rotated at an increased rotation rate is essentially composed of a flexible support, a non-magnetic undercoating layer, and a thin magnetic layer which has a smooth surface and utilizes an iron-containing ferromagnetic metal powder, wherein the ferromagnetic metal powder contains an amount of an aluminum element in an amount of 5 to 30 atomic % based on the amount of iron element, and the magnetic layer is adjusted to have a squareness ratio of in the range of 0.15 to 0.30.

Abstract translation: 以磁记录盘以增加的旋转速度旋转的磁记录和再现方法有利地使用的磁记录盘基本上由柔性支撑件，非磁性底涂层和具有光滑的非磁性底涂层 表面，并且使用含铁铁磁性金属粉末，其中铁磁性金属粉末含有相对于铁元素量为5〜30原子％的量的铝元素量，并且将磁性层调整为具有矩形度 的比例在0.15〜0.30的范围内。

公开(公告)号：US5728442A

公开(公告)日：1998-03-17

申请号：US605860

申请日：1996-02-23

Applicant: Hitoshi Noguchi ,  Nobuo Yamazaki ,  Shinji Saito

Inventor： Hitoshi Noguchi ,  Nobuo Yamazaki ,  Shinji Saito

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  G11B5/706 ,  G11B5/738 ,  G11B5/82

CPC classification number: G11B5/70678 ,  G11B5/70 ,  G11B5/738 ,  Y10T428/257 ,  Y10T428/26 ,  Y10T428/265

Abstract: A magnetic recording disk which comprises a nonmagnetic support having provided thereon a magnetic layer comprising a hexagonal ferrite magnetic material dispersed in a binder, wherein the magnetic layer has an orientation ratio of 0.9 or more, a vertical diamagnetic correction squareness ratio of from 0.3 to 0.55, an in-plane coercive force of from 1,400 to 3,000 Oe, a vertical-direction coercive force of from 1,400 to 3,000 Oe, and a dry thickness of 0.8 .mu.m or less.

Abstract translation: 一种磁记录盘，其包括具有分散在粘合剂中的包含六方晶系铁氧体磁性材料的磁性层的非磁性载体，其中所述磁性层的取向比为0.9以上，垂直抗磁性校正矩形比为0.3〜0.55 1400〜3000Oe的平面内矫顽力，1400〜3000Oe的纵向矫顽力，0.8μm以下的干燥厚度。

公开(公告)号：US5609971A

公开(公告)日：1997-03-11

申请号：US264918

申请日：1994-06-24

Applicant: Naoto Matono ,  Hitoshi Noguchi ,  Tomomi Yamamoto ,  Shinji Kobayashi ,  Masahiro Nakata

Inventor： Naoto Matono ,  Hitoshi Noguchi ,  Tomomi Yamamoto ,  Shinji Kobayashi ,  Masahiro Nakata

IPC: G11B5/147 ,  G11B5/31 ,  G11B5/39 ,  G11B5/66 ,  B32B9/00

CPC classification number: G11B5/1475 ,  G11B5/3116 ,  G11B5/3967 ,  Y10S428/90 ,  Y10T428/1171 ,  Y10T428/12861 ,  Y10T428/12937

Abstract: A thin film magnetic head comprising a lower magnetic core layer 9 and an upper magnetic core layer 12 formed over the core layer 9 with a coil layer 10, a gap spacer layer 11 and an insulating layer provided therebetween, the core layers 9 and 12 each having a core tip region c between a core tip a and a portion b increasing in core width. The core layers 9 and 12 are each formed by a magnetic thin film of NiFe having a positive magnetostriction constant of not greater than 1.times.10.sup.-6 in absolute value and containing 17.5 to 19.5 wt. % of Fe.

Abstract translation: 一种薄膜磁头，包括在芯层9上形成的下磁芯层9和上磁芯层12，线圈层10，间隔层11和设置在其间的绝缘层，芯层9和12各自 在核心尖端a和芯部宽度增加的部分b之间具有芯部尖端区域c。 芯层9和12各自由具有绝对值不大于1×10-6的正磁致伸缩常数的NiFe的磁性薄膜形成，并且含有17.5至19.5wt。 Fe％。

公开(公告)号：US5496653A

公开(公告)日：1996-03-05

申请号：US245486

申请日：1994-05-18

Applicant: Shinji Saito ,  Nobuo Yamazaki ,  Hitoshi Noguchi

Inventor： Shinji Saito ,  Nobuo Yamazaki ,  Hitoshi Noguchi

IPC: G11B5/70 ,  C09D5/23 ,  G11B5/706 ,  G11B5/738 ,  G11B5/845 ,  G11B5/852 ,  G11B5/66

CPC classification number: G11B5/852 ,  G11B5/70678 ,  G11B5/845 ,  Y10S428/90

Abstract: A magnetic recording medium having good characteristics over all recording wavelength regions, comprising a non-magnetic support having thereon a magnetic layer mainly comprising a tabular ferromagnetic hexagonal ferrite particle and a binder, wherein said ferromagnetic hexagonal ferrite powder is magnetically orientated in the longitudinal direction of the medium, and said magnetic layer has a glossiness in the longitudinal direction of the medium of 200% or more and at least 3% higher than that in the width direction of the medium.

Abstract translation: 一种在所有记录波长区域具有良好特性的磁记录介质，包括其上具有主要包括片状铁磁性六方晶系铁氧体颗粒和粘结剂的磁性层的非磁性载体，其中所述铁磁性六方晶系铁氧体粉末沿纵向方向磁性取向 所述介质，并且所述磁性层在介质的纵向上具有比介质的宽度方向上高200％以上且至少3％的光泽度。

公开(公告)号：US5246802A

公开(公告)日：1993-09-21

申请号：US788568

申请日：1991-11-06

Applicant: Meguru Kashida ,  Yoshihiro Kubota ,  Yoshihiko Nagata ,  Hitoshi Noguchi

Inventor： Meguru Kashida ,  Yoshihiro Kubota ,  Yoshihiko Nagata ,  Hitoshi Noguchi

IPC: C23C14/06 ,  C23C14/34 ,  G03F1/22 ,  H01L21/027 ,  H01L21/30

CPC classification number: G03F1/22 ,  C23C14/0635 ,  C23C14/3414

Abstract: An X-ray permeable membrane for an X-ray lithographic mask consisting of an inorganic thin film obtained by the sputtering method using a target and consisting of silicon carbide and carbon, said target consisting of silicon carbide and carbon in a molar ratio of 99.9:0.1 to 70:30, having a transmission of at least 37% at a light wavelength of 633 nm and a tensile strength of 1.times.10.sup.8 to 1.times.10.sup.10 dyn/cm.sup.2, and the membrane consisting of a silicon carbide constituted form silicon and carbon in a molar ratio in the range form 50.1:49.9 to 49.9:50.1.

Abstract translation: 一种用于X射线光刻掩模的X射线透过膜，其由通过使用靶的溅射法由碳化硅和碳组成的无机薄膜组成，所述靶由碳化硅和碳组成，摩尔比为99.9： 0.1至70:30，在633nm的光波长和1×10 8至1×10 10 dyn / cm 2的透光率下具有至少37％的透射率，并且该膜由以硅和碳组成的摩尔比构成的碳膜 范围为50.1：49.9至49.9：50.1。