公开(公告)号：US06611388B1

公开(公告)日：2003-08-26

申请号：US09646138

申请日：2000-09-13

申请人： Keizo Miyata ,  Tatsuaki Ishida ,  Taizou Hamada ,  Kiyokazu Tohma ,  Hiroshi Ryonai

发明人： Keizo Miyata ,  Tatsuaki Ishida ,  Taizou Hamada ,  Kiyokazu Tohma ,  Hiroshi Ryonai

IPC分类号： G11B586

CPC分类号： G11B5/5526 ,  G11B5/00 ,  G11B5/59633 ,  G11B5/59688 ,  G11B5/82 ,  G11B5/865

摘要： A master-information magnetic recording apparatus for recording preformat information signals into a magnetic recording medium using a ferromagnetic film pattern formed on a master information carrier, in which the pattern corresponds to the preformat information signals. With the master information carrier in contact with the magnetic recording medium, the ferromagnetic film pattern is magnetized by a magnetic field applying device. Thus, the preformat information signals are recorded into the magnetic recording medium. The magnetic field applying device is so constructed that the direction of magnetizing the ferromagnetic film pattern is perpendicular to a track-scanning orbit of a magnetic head in a recording and reproducing apparatus in which the magnetic recording medium is installed. It enables the magnetic head to gain sufficient reproduction amplitude for track-scanning for reproducing the information signals.

摘要翻译： 一种主信息磁记录装置，用于使用形成在主信息载体上的铁磁膜图案将预格式化信息信号记录到磁记录介质中，其中图案对应于预格式化信息信号。 在主信息载体与磁记录介质接触的情况下，铁磁膜图案被磁场施加装置磁化。 因此，预格式化信息信号被记录在磁记录介质中。 磁场施加装置的结构使得铁磁膜图案的磁化方向垂直于安装有磁记录介质的记录和再现装置中的磁头的轨道扫描轨道。 它使磁头能够获得足够的再现幅度，用于轨道扫描以再现信息信号。

公开(公告)号：US06858328B1

公开(公告)日：2005-02-22

申请号：US09646139

申请日：1999-03-18

申请人： Tatsuaki Ishida ,  Kiyokazu Tohma ,  Keizo Miyata ,  Yoriko Takai ,  Taizou Hamada ,  Hiroshi Ryonai

发明人： Tatsuaki Ishida ,  Kiyokazu Tohma ,  Keizo Miyata ,  Yoriko Takai ,  Taizou Hamada ,  Hiroshi Ryonai

IPC分类号： G11B5/73 ,  G11B5/127 ,  G11B5/55 ,  G11B5/596 ,  G11B5/64 ,  G11B5/72 ,  G11B5/738 ,  G11B5/82 ,  G11B5/84 ,  G11B5/855 ,  G11B5/86 ,  G11B5/66 ,  B05D5/12 ,  G11B5/70 ,  H01F1/00

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/656 ,  G11B5/72 ,  G11B5/743 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/855 ,  Y10S428/90

摘要： A master information carrier with excellent durability is provided, for the use of static and a real lump-sum recording of digital information signals on magnetic recording medium. The master information carrier comprises a non-magnetic substrate on which a ferromagnetic film is disposed with an embossed pattern. Protrusions of the embossed pattern correspond to a disposition of the digital information signals.Recessed portions of the embossed pattern of the ferromagnetic film are filled with non-magnetic solid material. Alternately, A non-magnetic substrate has an embossed pattern and recessed portions of the embossed pattern correspond to a disposition of the digital information signals. A ferromagnetic film is filled in the recessed portions of the embossed pattern.

摘要翻译： 提供了具有优异耐久性的主信息载体，用于在磁记录介质上使用静态和数字信息信号的实际一次总计记录。 主信息载体包括其上以压花图案设置铁磁膜的非磁性基板。 浮雕图案的突起对应于数字信息信号的布置。铁磁膜的压花图案的凹入部分填充有非磁性固体材料。 或者，非磁性基板具有压花图案，并且压花图案的凹部对应于数字信息信号的布置。 铁氧体膜填充在压纹图案的凹部中。

公开(公告)号：US06714367B1

公开(公告)日：2004-03-30

申请号：US09555583

申请日：2000-08-07

申请人： Tatsuaki Ishida ,  Hiroshi Ryonai ,  Nobuyuki Komura ,  Keizo Miyata ,  Kiyokazu Tohma

发明人： Tatsuaki Ishida ,  Hiroshi Ryonai ,  Nobuyuki Komura ,  Keizo Miyata ,  Kiyokazu Tohma

IPC分类号： G11B586

CPC分类号： B82Y10/00 ,  G11B5/64 ,  G11B5/656 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  G11B5/865

摘要： A master information carrier has a shape pattern corresponding to an information signal array to be recorded on a magnetic recording medium, and the shape pattern is provided by arraying a ferromagnetic thin film deposited on a nonmagnetic substrate surface. The ferromagnetic thin film is either a soft magnetic film or semihard magnetic film having not more than 40 kA/m coercive force in track length direction of the information signals, and residual magnetization of the ferromagnetic thin film in the track length direction of the information signals is greater than coercive force of the magnetic recording medium. As a result, a master information carrier with superior magnetic recording performance can be obtained.

摘要翻译： 主信息载体具有对应于要记录在磁记录介质上的信息信号阵列的形状图案，并且通过排列沉积在非磁性基板表面上的铁磁性薄膜来提供形状图案。 铁磁性薄膜是在信息信号的轨道长度方向上具有不超过40kA / m矫顽力的软磁性膜或半硬磁性薄膜，以及信息信号的磁道长度方向上的铁磁性薄膜的剩余磁化 大于磁记录介质的矫顽力。 结果，可以获得具有优良磁记录性能的主信息载体。

公开(公告)号：US06858329B2

公开(公告)日：2005-02-22

申请号：US09980183

申请日：2001-03-29

申请人： Taizou Hamada ,  Hideyuki Hashi ,  Tatsuaki Ishida ,  Nobuyuki Komura ,  Yasuaki Ban ,  Keizo Miyata ,  Kiyokazu Tohma

发明人： Taizou Hamada ,  Hideyuki Hashi ,  Tatsuaki Ishida ,  Nobuyuki Komura ,  Yasuaki Ban ,  Keizo Miyata ,  Kiyokazu Tohma

IPC分类号： G11B5/596 ,  G11B5/82 ,  G11B5/86 ,  G11B23/50 ,  G11B5/66

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865 ,  G11B23/505

摘要： A master disc capable of conducting a preformat recording by a magnetic transcription without causing any unevenness over an entire magnetic disc is provided. The master disc is provided with a radial land portion where an array of ferromagnetic thin films is formed and a concave portion against the land portion. The land portion and the concave portion are formed such that the land portion is joined with the surface of the magnetic disc when the present magnetic disc is overlapped on the magnetic disc, and that the concave portion is not contacted with the surface of the magnetic disc, and also that a space surrounded by the surface of the magnetic disc and the concave portion is open to air at a peripheral end portion of the magnetic disc.

摘要翻译： 提供能够通过磁转录进行预格式化记录而不在整个磁盘上造成任何不均匀的母盘。 主盘设置有形成铁磁性薄膜阵列的径向接地部分和抵靠陆部的凹部。 当磁盘重叠在磁盘上时，陆部和凹部形成为使得陆部与磁盘的表面接合，并且凹部不与磁盘的表面接触 并且由磁盘的表面和凹部包围的空间在磁盘的周边端部对空气开放。

公开(公告)号：US06466385B1

公开(公告)日：2002-10-15

申请号：US09673900

申请日：2000-12-07

申请人： Yoshio Umeda ,  Ryosuke Shimizu ,  Syuichi Yoshida ,  Tatsuaki Ishida ,  Kiyokazu Tohma ,  Keizo Miyata

发明人： Yoshio Umeda ,  Ryosuke Shimizu ,  Syuichi Yoshida ,  Tatsuaki Ishida ,  Kiyokazu Tohma ,  Keizo Miyata

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/012 ,  G11B5/5521 ,  G11B5/59655 ,  G11B5/82 ,  G11B21/083 ,  G11B21/10 ,  G11B21/106

摘要： A magnetic disk apparatus has: a head (2) that performs data recording and playback while moving relative to a magnetic disk (26) rotating at the prescribed speed; an actuator (3) that positions said head relative to said magnetic disk (26); and a controller (4) that detects the position of said head by means of servo sector that have positioning information recorded magnetically on said magnetic disk (1) and performs control to position said actuator (3) by means of this detection signal, wherein said magnetic disk (1) has at least a part in which the arrangement of tracks is spiral. The magnetic patterns on the disk include a servo sector and a data sector both formed on the same spiral track. The servo sector includes burst patterns for servo control.

摘要翻译： 磁盘装置具有：头部（2），其在相对于以规定速度旋转的磁盘（26）移动的同时执行数据记录和重放; 致动器（3），其将所述头相对于所述磁盘（26）定位; 以及控制器（4），其通过具有磁性地记录在所述磁盘（1）上的定位信息的伺服扇区来检测所述磁头的位置，并通过该检测信号执行控制以定位所述致动器（3），其中所述 磁盘（1）至少具有一部分轨道的排列是螺旋形的。 磁盘上的磁图案包括伺服扇区和数据扇区，两者形成在相同的螺旋轨道上。 伺服扇区包括用于伺服控制的突发模式。

公开(公告)号：US06646820B1

公开(公告)日：2003-11-11

申请号：US09869947

申请日：2001-07-03

申请人： Tatsuaki Ishida ,  Taizou Hamada ,  Hideyuki Hashi ,  Keizo Miyata ,  Yasuaki Ban ,  Hiromi Kita

发明人： Tatsuaki Ishida ,  Taizou Hamada ,  Hideyuki Hashi ,  Keizo Miyata ,  Yasuaki Ban ,  Hiromi Kita

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/127 ,  G11B5/23 ,  G11B5/82

摘要： A master information carrier (2) with an arranged pattern formed of a ferromagnetic film in a shape corresponding to information signals is superposed on a magnetic recording medium (1) and the arranged pattern formed of a ferromagnetic film is magnetized with a magnetizing head (6), thus transfer-recording the arranged pattern into the magnetic recording medium as a magnetized pattern. The magnetizing head includes an annular magnetic circuit with a gap, and a strength of a magnetic field applied to the master information carrier by magnetic flux leaking from portions other than the gap is set to be 20% or less of that of a magnetic field applied to the master information carrier by magnetic flux leaking from the gap. Quality deterioration due to various conditions during recording can be prevented and uniform recording with less variation depending on position on the magnetic recording medium is achieved.

摘要翻译： 具有与信息信号相对应的铁磁膜形成的排列图案的主信息载体（2）叠加在磁记录介质（1）上，由铁磁膜形成的排列图案被磁化头（6 ），从而将布置的图案作为磁化图案转印记录到磁记录介质中。 磁化头包括具有间隙的环形磁路，并且通过从除了间隙之外的部分泄漏的磁通量施加到主信息载体的磁场强度设定为施加的磁场的磁场强度的20％以下 通过磁通从主信息载体泄漏出来。 可以防止由记录期间的各种条件导致的质量劣化，并且实现根据磁记录介质上的位置具有较小变化的均匀记录。

公开(公告)号：US07061703B2

公开(公告)日：2006-06-13

申请号：US10686145

申请日：2003-10-14

申请人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

发明人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： A master information carrier capable of manufacturing a magnetic recording medium in which a preformat recording of information signals causing no reproduction signal detection errors arising from a pulse shift of a reproduction waveform is performed. A master information carrier 1 has an array of ferromagnetic thin films 3 arranged according to the pattern of information signals and is used for forming magnetization 4 of a pattern corresponding to the array pattern of the ferromagnetic thin film 3 in a magnetic recording medium by applying a magnetic field while opposing the master information carrier 1 against a magnetic recording medium 2. Each of the ferromagnetic thin films 3 is formed such that each pattern length A becomes equal to a length including a correction amount α in addition to a length a between magnetic transition areas 6 of the magnetization 4 to be formed in the magnetic recording medium 2.

公开(公告)号：US07057834B2

公开(公告)日：2006-06-06

申请号：US09979872

申请日：2001-03-29

申请人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

发明人： Tatsuaki Ishida ,  Keizo Miyata ,  Nobuyuki Komura ,  Yasuaki Ban ,  Taizou Hamada ,  Hideyuki Hashi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： A master information carrier capable of manufacturing a magnetic recording medium in which a preformat recording of information signals causing no reproduction signal detection errors arising from a pulse shift of a reproduction waveform is performed. A master information carrier 1 has an array of ferromagnetic thin films 3 arranged according to the pattern of information signals and is used for forming magnetization 4 of a pattern corresponding to the array pattern of the ferromagnetic thin film 3 in a magnetic recording medium by applying a magnetic field while opposing the master information carrier 1 against a magnetic recording medium 2. Each of the ferromagnetic thin films 3 is formed such that each pattern length A becomes equal to a length including a correction amount α in addition to a length a between magnetic transition areas 6 of the magnetization 4 to be formed in the magnetic recording medium 2.

摘要翻译： 能够制造磁记录介质的主信息载体，其中执行不再现由再现波形的脉冲移位引起的再现信号检测错误的信息信号的预格式化记录。 主信息载体1具有根据信息信号的图案布置的铁磁薄膜3的阵列，并且用于在磁记录介质中形成与铁磁性薄膜3的阵列图案对应的图案的磁化4， 同时与主信息载体1相对于磁记录介质2相对。 每个铁磁薄膜3被形成为使得除了要在磁记录介质2中形成的磁化4的磁性过渡区域6之间的长度a之外，每个图案长度A也等于包括校正量α的长度。

公开(公告)号：US06859339B2

公开(公告)日：2005-02-22

申请号：US10355860

申请日：2003-01-30

申请人： Yasuaki Ban ,  Keizo Miyata ,  Taizou Hamada ,  Kouji Taniguchi ,  Masaya Sakaguchi

发明人： Yasuaki Ban ,  Keizo Miyata ,  Taizou Hamada ,  Kouji Taniguchi ,  Masaya Sakaguchi

IPC分类号： G11B5/86

CPC分类号： B82Y10/00 ,  G11B5/743 ,  G11B5/865

摘要： The master information recording apparatus 100 includes a master information carrier, a master information carrier facing member, and a magnetic field applying member. A ferromagnetic thin film pattern formed on the surface of the master information carrier includes not less than two kinds of different patterns each having a different pattern angle showing an angle with respect to the direction of the relative movement between a magnetic head and a rotating magnetic recording medium. The magnetic field applying unit applies a magnetic field along the direction, which is perpendicular to the direction shown by an angle that is smaller than the pattern angle of the maximum pattern and larger than the minimum pattern angle of the pattern among the not less than two kinds of patterns.

摘要翻译： 主信息记录装置100包括主信息载体，主信息载体面对构件和磁场施加构件。 形成在主信息载体的表面上的铁磁薄膜图案包括不同于两种不同的图案，每种图案具有不同的图案角度，该图案角度相对于磁头和旋转磁记录之间的相对移动方向呈角度 中。 磁场施加单元沿着垂直于小于最大图案的图案角度的角度的方向施加磁场，并且大于图案的最小图案角度之中的不少于两个的磁场 各种图案

公开(公告)号：US07220323B2

公开(公告)日：2007-05-22

申请号：US10362071

申请日：2002-06-19

申请人： Hideyuki Hashi ,  Keizo Miyata ,  Taizou Hamada

发明人： Hideyuki Hashi ,  Keizo Miyata ,  Taizou Hamada

IPC分类号： B08B7/04

CPC分类号： G11B5/865 ,  G11B23/505

摘要： A cleaning method preventing foreign matter attached to a brush from being transferred back to a magnetic transfer carrier by removing foreign matter attached to a cleaning tool such as the brush with a dummy carrier having a recess equivalent to that on a surface of the magnetic transfer carrier.

摘要翻译： 通过除去附着在诸如电刷的清洁工具上的异物，可以防止附着在电刷上的异物转移回磁性转移载体的清洁方法，该虚拟载体具有与磁性转移载体表面相同的凹槽 。