公开(公告)号：US06850377B2

公开(公告)日：2005-02-01

申请号：US10123417

申请日：2002-04-17

申请人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida

发明人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida

IPC分类号： G01R33/12 ,  G11B5/86 ,  G11B23/50 ,  G11B27/36 ,  G11B33/10

CPC分类号： G01R33/1207 ,  G11B5/865 ,  G11B23/505 ,  G11B27/36 ,  G11B33/10 ,  G11B2220/20

摘要： Instead of directly performing defect inspection using a master information carrier, an inspection substrate is prepared to then bring the master information carrier in close contact therewith, to thereby transfer a defect on the master information carrier to the inspection substrate, thus indirectly inspecting any defect of the master information carrier on the inspection substrate. Defect inspection is performed on the first-state inspection substrate before close contacting, so that a defect inspection result on the second-state inspection substrate after close contacting and that on the first-state inspection substrate are compared to each other.

摘要翻译： 代替使用主信息载体直接执行缺陷检查，准备检查基板，使主信息载体紧密接触，从而将主信息载体上的缺陷传送到检查基板，从而间接地检查 检测基板上的主信息载体。 在紧密接触之前对第一状态检查基板进行缺陷检查，从而将紧密接触后的第二状态检查基板与第一状态检查基板上的缺陷检查结果进行比较。

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：US06909565B2

公开(公告)日：2005-06-21

申请号：US10718136

申请日：2003-11-20

申请人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida ,  Kiyokazu Tohma

发明人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida ,  Kiyokazu Tohma

IPC分类号： G11B5/82 ,  G11B5/84 ,  G11B5/86 ,  G11B19/04 ,  G11B23/50

CPC分类号： G11B5/82 ,  G11B5/84 ,  G11B5/865 ,  G11B19/04 ,  G11B23/505

摘要： A magnetic transfer method includes a first step (ST103) of preparing a magnetic disk, a second step (ST105) of forming a layer of lubricant on the magnetic disk, a third step (ST108) of bringing a surface of the magnetic layer on the magnetic disk into close contact with a magnetic transfer master having a magnetic film formed on at least one side and magnetically transferring a pattern of the magnetic film on the magnetic transfer master onto the surface of the magnetic disk through application of an external magnetic field, and a fourth step (ST104, ST106) of burnishing at least a surface of the magnetic disk that comes into contact with the magnetic transfer master. The first step, the fourth step, the second step, the fourth step, and the third step are performed in the stated order.

摘要翻译： 磁转移方法包括制备磁盘的第一步骤（ST 103），在磁盘上形成润滑剂层的第二步骤（ST105），使磁性表面形成的第三步骤（ST 108） 在磁盘上形成与形成在至少一个侧面上的具有磁性膜的磁性传递主体紧密接触，并通过施加外部磁体将磁性传递母版上的磁性膜的图案磁性传递到磁盘表面上 以及第四步骤（ST104，ST1010），其与至少与磁转移母盘接触的磁盘表面进行抛光。 第一步骤，第四步骤，第二步骤，第四步骤和第三步骤按照所述顺序进行。

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：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：US06785070B2

公开(公告)日：2004-08-31

申请号：US10007416

申请日：2001-12-03

申请人： Kouji Taniguchi ,  Kaoru Matsuoka ,  Taizou Hamada ,  Hideyuki Hashi ,  Yasuaki Ban ,  Tatsuaki Ishida

发明人： Kouji Taniguchi ,  Kaoru Matsuoka ,  Taizou Hamada ,  Hideyuki Hashi ,  Yasuaki Ban ,  Tatsuaki Ishida

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/59633 ,  G11B23/505

摘要： A magnetic transcription device for transcribing information signals of a master information carrier in a magnetic recording medium by applying a magnetic field generated by magnetic field generating means to a contact body obtained by contacting the master information carrier having a base on which ferromagnetic bodies corresponding to the information signals are formed with a magnetic recording medium having a ferromagnetic layer, wherein the magnetic recording medium includes driving means for adjusting a distance between the magnetic field generating means and the contact body while rotating the magnetic field generating means relative to the contact body. Accordingly, an external magnetic field can be applied and removed for transcription of the information signals of the master information carrier in the magnetic recording medium while rotating the magnetic field generating means relative to the contact body, so that the deterioration of reproduction signals from the magnetic recording medium can be prevented.

摘要翻译： 一种磁转录装置，用于通过将由磁场产生装置产生的磁场施加到磁场产生装置上的磁场来转录主信息载体的信息信号，该接触体通过使具有基底的主信息载体接触而获得， 信息信号由具有铁磁层的磁记录介质形成，其中磁记录介质包括用于在磁场产生装置相对于接触体旋转的同时调节磁场产生装置和接触体之间的距离的驱动装置。 因此，在使磁场产生装置相对于接触体旋转的同时，可以施加和去除外部磁场以转录磁记录介质中的主信息载体的信息信号，从而使来自磁性的再现信号的恶化 可以防止记录介质。

公开(公告)号：US06898032B2

公开(公告)日：2005-05-24

申请号：US10203328

申请日：2001-03-28

申请人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida ,  Kiyokazu Tohma

发明人： Hideyuki Hashi ,  Taizou Hamada ,  Tatsuaki Ishida ,  Kiyokazu Tohma

IPC分类号： G11B5/82 ,  G11B5/84 ,  G11B5/86 ,  G11B19/04 ,  G11B23/50

CPC分类号： G11B5/82 ,  G11B5/84 ,  G11B5/865 ,  G11B19/04 ,  G11B23/505

摘要： A magnetic transfer method includes a first step (ST103) of preparing a magnetic disk, a second step (ST105) of forming a layer of lubricant on the magnetic disk, a third step (ST108) of bringing a surface of the magnetic layer on the magnetic disk into close contact with a magnetic transfer master having a magnetic film formed on at least one side and magnetically transferring a pattern of the magnetic film on the magnetic transfer master onto the surface of the magnetic disk through application of an external magnetic field, and a fourth step (ST104, ST106) of burnishing at least a surface of the magnetic disk that comes into contact with the magnetic transfer master. The first step, the fourth step, the second step, the fourth step, and the third step are performed in the stated order.

摘要翻译： 磁转移方法包括制备磁盘的第一步骤（ST 103），在磁盘上形成润滑剂层的第二步骤（ST105），使磁性表面形成的第三步骤（ST 108） 在磁盘上形成与形成在至少一个侧面上的具有磁性膜的磁性传递主体紧密接触，并通过施加外部磁体将磁性传递母版上的磁性膜的图案磁性传递到磁盘表面上 以及第四步骤（ST104，ST1010），其与至少与磁转移母盘接触的磁盘表面进行抛光。 第一步骤，第四步骤，第二步骤，第四步骤和第三步骤按照所述顺序进行。

公开(公告)号：US06914735B2

公开(公告)日：2005-07-05

申请号：US10261673

申请日：2002-10-02

申请人： Taizou Hamada ,  Tatsuaki Ishida ,  Yasuaki Ban

发明人： Taizou Hamada ,  Tatsuaki Ishida ,  Yasuaki Ban

IPC分类号： G11B5/86 ,  G11B5/84

CPC分类号： G11B5/865

摘要： In a manufacturing method for a magnetic recording medium, when the length of a ferromagnetic thin film on a master information carrier corresponding to the length between a pair of magnetization transition regions adjacent to each other is A in magnetization information recorded onto a magnetic recording medium, the film thickness of the ferromagnetic thin film is t and A/t is k, k is set from not less than 0.8 to not more than 8.

摘要翻译： 在磁记录介质的制造方法中，当与记录在磁记录介质上的磁化信息中的相互相邻的一对磁化过渡区之间的长度上的主信息载体上的铁磁性薄膜的长度为A时， 铁磁薄膜的膜厚为t，A / t为k，k设定为0.8以上8以下。

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。