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1. 发明授权

US06714367B1 Master information medium and method of master information recording 失效
标题翻译：主信息介质和主信息记录方法
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。

2. 发明授权

US06858328B1 Master information support 失效
标题翻译：掌握信息支持
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。

3. 发明授权

US06611388B1 Master information magnetic recorder 失效
标题翻译：主信息磁记录器
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。

4. 发明授权

US06858329B2 Master disc and method for manufacturing magnetic disc using the same 失效
标题翻译：主盘及其制造方法
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。

5. 发明授权

US06242085B1 Magnetic recording medium and method for producing the same 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US06242085B1
公开(公告)日：2001-06-05
申请号：US09153579
申请日：1998-09-15
申请人： Hiroshi Ryonai , Tatsuaki Ishida , Kiyokazu Tohma , Keizou Miyata , Taizou Hamada
发明人： Hiroshi Ryonai , Tatsuaki Ishida , Kiyokazu Tohma , Keizou Miyata , Taizou Hamada
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/851 , G11B5/855 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： An underlying layer is formed of Cr or the like on a glass substrate, and a magnetic layer is formed on the underlying layer by simultaneously sputtering a magnetic substance and a non-magnetic substance that does not form a solid solution with the magnetic substance in an atmosphere having a pressure of 30 mTorr to 75 mTorr. The magnetic recording medium comprises clusters, each of which is formed of aggregated magnetic grains, and a non-magnetic substance between the clusters. Each magnetic grain has a grain diameter of 5 nm to 20 nm. An average gap between the clusters is 1.5 nm to 5 nm. Thus, the present invention can provide a magnetic recording medium having a high S/N ratio that is suitable for high density recording.
摘要翻译：在玻璃基板上由Cr等形成下层，通过同时将磁性物质和不与磁性物质形成固溶体的非磁性物质同时溅射在基底层上而形成磁性层压力为30mTorr至75mTorr的气氛。磁记录介质包括由聚集的磁性颗粒形成的簇和簇之间的非磁性物质。每个磁性颗粒具有5nm至20nm的粒径。簇之间的平均间隙为1.5nm至5nm。因此，本发明可以提供适用于高密度记录的具有高S / N比的磁记录介质。

6. 发明授权

US06567227B2 Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier 失效
公开(公告)号：US06567227B2
公开(公告)日：2003-05-20
申请号：US10108029
申请日：2002-03-26
申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
发明人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
IPC分类号： G11B586
CPC分类号： G11B5/64 , G11B5/59638 , G11B5/59655 , G11B5/855 , G11B5/865
摘要： A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern is made of a ferromagnetic material. A method for writing an information signal into a sheet or disk magnetic record medium with a ferromagnetic thin film or coating is performed by putting the surface of the magnetic record medium into contact with the master information carrier so as to write a magnetized pattern corresponding to the embossed pattern of the master information carrier into the magnetic record medium.

7. 发明授权

US06606209B2 Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier 失效
公开(公告)号：US06606209B2
公开(公告)日：2003-08-12
申请号：US10108032
申请日：2002-03-26
申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Keizou Miyata , Hiroshi Ryonai
发明人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Keizou Miyata , Hiroshi Ryonai
IPC分类号： G11B586
CPC分类号： G11B5/64 , G11B5/59638 , G11B5/59655 , G11B5/855 , G11B5/865
摘要： A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern is made of a ferromagnetic material. A method for writing an information signal into a sheet or disk magnetic record medium with a ferromagnetic thin film or coating is performed by putting the surface of the magnetic record medium into contact with the master information carrier so as to write a magnetized pattern corresponding to the embossed pattern of the master information carrier into the magnetic record medium.

8. 发明授权

US06529341B1 Magnetic recording/reproduction device using preformat information 有权
标题翻译：磁记录/再现设备使用预格式化信息
公开(公告)号：US06529341B1
公开(公告)日：2003-03-04
申请号：US09530314
申请日：2000-07-25
申请人： Tatsuaki Ishida , Taizou Hamada , Kiyokazu Tohma , Hiroshi Ryonai , Keizou Miyata
发明人： Tatsuaki Ishida , Taizou Hamada , Kiyokazu Tohma , Hiroshi Ryonai , Keizou Miyata
IPC分类号： G11B509
CPC分类号： B82Y10/00 , G11B5/012 , G11B5/5526 , G11B5/59633 , G11B5/59688 , G11B5/743 , G11B5/746 , G11B5/82 , G11B5/865 , G11B27/3027 , G11B2220/20
摘要： A magnetic disk for a magnetic recording/reproduction device includes a magnetic head, wherein a magnetization bit-pattern corresponding to a preformat information signal is recorded beforehand on the magnetic disk, wherein the magnetization bit-pattern is recorded by contacting a surface of the magnetic disk with a surface of a master information carrier having a pattern corresponding to the preformat information signal, and a portion of the magnetization bit-pattern corresponding to at least one signal selected from a clock signal and a synchronous signal has a recording width that is larger than a recording track width of the magnetic head in a radial direction of the magnetic disk.
摘要翻译：用于磁记录/再现装置的磁盘包括磁头，其中预先对应于预格式化信息信号的磁化位模式被预先记录在磁盘上，其中磁化位模式通过使磁性记录/再现装置的表面接触来记录具有与预格式信息信号对应的图案的主信息载体的表面的磁盘，并且与从时钟信号和同步信号中选择的至少一种信号相对应的磁化位模式的一部分具有较大的记录宽度比磁头在磁盘的径向方向上的记录磁道宽度大。

9. 发明授权

US06961196B2 Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier 失效
标题翻译：主信息载体，用于生成载体的方法，使用载体将信息写入磁记录介质的方法和装置
公开(公告)号：US06961196B2
公开(公告)日：2005-11-01
申请号：US10396674
申请日：2003-03-25
申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
发明人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
IPC分类号： G11B5/596 , G11B5/64 , G11B5/855 , G11B5/86
CPC分类号： G11B5/64 , G11B5/59638 , G11B5/59655 , G11B5/855 , G11B5/865
摘要： A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern is made of a ferromagnetic material. A method for writing an information signal into a sheet or disk magnetic record medium with a ferromagnetic thin film or coating is performed by putting the surface of the magnetic record medium into contact with the master information carrier so as to write a magnetized pattern corresponding to the embossed pattern of the master information carrier into the magnetic record medium.
摘要翻译：主信息载体包括其表面具有对应于信息信号的压纹图案的基板。浮雕图案的突出部分的至少一个表面由铁磁材料制成。通过使磁记录介质的表面与主信息载体接触，将信息信号写入具有铁磁薄膜或涂层的片或磁盘记录介质的方法，以写入对应于主信息载体的压花图案进入磁记录介质。

10. 发明授权

US06347016B1 Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier 失效
公开(公告)号：US06347016B1
公开(公告)日：2002-02-12
申请号：US09101590
申请日：1998-07-13
申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Keizou Miyata , Hiroshi Ryonai
发明人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Keizou Miyata , Hiroshi Ryonai
IPC分类号： G11B586
CPC分类号： G11B5/64 , G11B5/59638 , G11B5/59655 , G11B5/855 , G11B5/865
摘要： A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern is made of a ferromagnetic material. A method for writing an information signal into a sheet or disk magnetic record medium with a ferromagnetic thin film or coating is performed by putting the surface of the magnetic record medium into contact with the master information carrier so as to write a magnetized pattern corresponding to the embossed pattern of the master information carrier into the magnetic record medium.

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