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11. 发明授权

US5458914A Method for producing magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US5458914A
公开(公告)日：1995-10-17
申请号：US367996
申请日：1995-01-03
申请人： Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
发明人： Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
IPC分类号： G11B5/85 , H01F10/00
CPC分类号： G11B5/85
摘要： A magnetic recording medium having good high density recording characteristics is produced by forming a magnetic layer on a substrate which is traveling around a peripheral surface of a cylindrical can by an oblique vapor deposition method to form a magnetic layer comprising cobalt, an axis of easy magnetization of which inclined from a line normal to the layer plane. A residual gas pressure in an initial region of the formation of the magnetic layer is kept as low as possible, in particular, the residual gas pressure in the initial region of the formation of the magnetic layer is lower than in the other part of the production apparatus.
摘要翻译：具有良好高密度记录特性的磁记录介质通过在通过倾斜气相沉积法绕圆筒形罐的周面行进的基板上形成磁性层来形成包含钴的磁性层，易磁化轴其从垂直于层平面的线倾斜。形成磁性层的初始区域中的残留气体压力尽可能地保持低，特别是形成磁性层的初始区域中的残余气体压力低于制造的其它部分仪器。

12. 发明授权

US5418059A Magnetic recording medium and method for producing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US5418059A
公开(公告)日：1995-05-23
申请号：US70981
申请日：1993-06-04
申请人： Ryuji Sugita , Kiyokazu Tohma , Tatsuaki Ishida , Yasuaki Ban
发明人： Ryuji Sugita , Kiyokazu Tohma , Tatsuaki Ishida , Yasuaki Ban
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/85 , G11B5/00
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium having a nonmagnetic substrate, a first magnetic layer which is formed on a surface of the substrate, has an axis of easy magnetization slanting from a normal line of a layer plane, contains cobalt and oxygen in an amount of not more than 40 atomic % and has a thickness of not larger than 0.15 .mu.m, and a second magnetic layer which is formed on a surface of the first magnetic layer, contains cobalt, has an axis of easy magnetization slanting from a normal line of a layer plane, contains oxygen in an amount of not larger than 37 atomic % and from 61 % to 99 % of the oxygen concentration in the first layer, and has a thickness of not larger than 0.15 .mu.m, which medium has a large S/N ratio.
摘要翻译：具有非磁性基板的磁记录介质，形成在基板的表面上的第一磁性层具有从层平面的法线倾斜的易磁化轴，其含有不大于 40原子％，并且具有不大于0.15μm的厚度，并且形成在第一磁性层的表面上的含有钴的第二磁性层具有从层平面的法线倾斜的易磁化轴含有第一层中氧浓度不大于37原子％和61％至99％的氧，并且具有不大于0.15μm的厚度，该介质具有大的S / N比。

13. 发明授权

US5472506A Method and apparatus for producing magnetic recording medium 失效
标题翻译：制造磁记录介质的方法和装置
公开(公告)号：US5472506A
公开(公告)日：1995-12-05
申请号：US367998
申请日：1995-01-03
申请人： Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
发明人： Kiyokazu Tohma , Ryuji Sugita , Tatsuaki Ishida , Yasuaki Ban
IPC分类号： G11B5/85 , C23C14/00
CPC分类号： G11B5/85
摘要： A magnetic recording medium having good high density recording characteristics is produced by forming a magnetic layer on a substrate which is traveling around a peripheral surface of a cylindrical can by an oblique vapor deposition method to form a magnetic layer comprising cobalt, an axis of easy magnetization of which inclined from a line normal to the layer plane. A residual gas pressure in an initial region of the formation of the magnetic layer is kept as low as possible, in particular, the residual gas pressure in the initial region of the formation of the magnetic layer is lower than in the other part of the production apparatus.
摘要翻译：具有良好高密度记录特性的磁记录介质通过在通过倾斜气相沉积法绕圆筒形罐的周面行进的基板上形成磁性层来形成包含钴的磁性层，易磁化轴其从垂直于层平面的线倾斜。形成磁性层的初始区域中的残留气体压力尽可能地保持低，特别是形成磁性层的初始区域中的残余气体压力低于制造的其它部分仪器。

14. 发明授权

US5554440A Magnetic recording medium and method for producing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US5554440A
公开(公告)日：1996-09-10
申请号：US118326
申请日：1993-09-09
申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Yasuaki Ban
发明人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Yasuaki Ban
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/85 , H01F1/11 , G11B5/70
CPC分类号： G11B5/656 , G11B5/66 , G11B5/85 , Y10S428/90 , Y10T428/265
摘要： A magnetic tape having a polymer substrate and a magnetic layer which is formed directly on a surface of the substrate or on a primer layer formed on the substrate and contains cobalt, oxygen and optionally nickel, in which a coercive force is at least 120 kA/m and a squareness ratio is at least 0.9 in a hysteresis loop which is obtained when a magnetic field is applied in a plane of the magnetic layer in a longitudinal direction of the magnetic tape, and on the hysteresis loop, an intensity of the applied magnetic field, at which a magnetization when the applied magnetic field is increased is 99% of the magnetization when the applied magnetic field is decreased, is not larger than 400 kA/m, and preferably, a ratio of a value of magnetization at an intersection between a tangential line drawn at a point which gives a residual magnetization at the applied magnetic field of 0 (zero) and a tangential line drawn at a point which gives a coercive force with a magnetization of 0 in a second quadrant to said residual magnetization is at least 0.9, which magnetic tape has improved high density recording/reproducing properties.
摘要翻译：一种具有聚合物基材和磁性层的磁带，其直接形成在基材的表面上或形成在基材上的底漆层上，并且含有钴，氧和任选的镍，矫顽力为至少120kA / m，当在磁带的纵向方向上的磁性层的平面中施加磁场时，在磁滞回线中，矩形比至少为0.9，在磁滞回线上，所施加的磁体的强度当所施加的磁场增加时的磁化强度是施加的磁场减小时的磁化强度的99％，不大于400kA / m，优选地，在相交处的磁化强度的比值在施加的磁场为0（零）的点处绘制的切线，以及在第二次给出磁化强度为0的矫顽力的点处画出的切线所述残余磁化强度的象限至少为0.9，该磁带具有改善的高密度记录/再现特性。

15. 发明授权

US06859339B2 Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this 失效
标题翻译：主信息磁记录装置及其记录信息的磁记录介质的制造方法
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

16. 发明授权

US06833972B2 Method for reproducing phase information signals in an information recording device 失效
标题翻译：用于在信息记录装置中再现相位信息信号的方法
公开(公告)号：US06833972B2
公开(公告)日：2004-12-21
申请号：US10277983
申请日：2002-10-23
申请人： Taizou Hamada , Yasuaki Ban
发明人： Taizou Hamada , Yasuaki Ban
IPC分类号： G11B5596
CPC分类号： B82Y10/00 , G11B5/584 , G11B5/5965 , G11B5/743
摘要： The data row Pw(i) of phase information obtained by reading preformatted phase patterns on an information recording medium by the head consists of the remainders obtained by dividing the data row of the phase information indicating the original track location by 2&pgr;. The data row Pw(i) in a convoluted state is entered; a data row dPw(i) consisting of the differential values between adjacent data in the data row Pw(i) is generated; a two-step differential data row &dgr;Pw(i) consisting of the differential values between adjacent data in the data row dPw(i) is generated; the cumulative coefficient k(i) is adjusted according to the section region where the value of the two-step differential data row &dgr;Pw(i) belongs; a differential data row dPu(i) (=&dgr;Pw(i)+2&pgr;×k(i)) is generated by applying a reconstructing process for solving the convolution process with the use of the found cumulative coefficient k(i); and a reconstructed phase information data row Pu(i) is obtained by further applying integration.
摘要翻译：通过由头部在信息记录介质上读取预先格式化的相位图案而获得的相位信息的数据行Pw（i）由将表示原始音轨位置的相位信息的数据行除以2pi而得到的剩余部分组成。进入卷积状态的数据行Pw（i）; 生成由数据行Pw（i）中的相邻数据之间的差分值组成的数据行dPw（i）产生由数据行dPw（i）中的相邻数据之间的差分值组成的两步差分数据行deltaPw（i）累积系数k（i）根据二阶差分数据行deltaPw（i）的值所属的区域区域进行调整; 通过使用找到的累积系数k（i）应用用于求解卷积处理的重构处理来生成差分数据行dPu（i）（= deltaPw（i）+ 2pixk（i）））。并且通过进一步应用积分获得重建的相位信息数据行Pu（i）。

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