公开(公告)号：US09311946B2

公开(公告)日：2016-04-12

申请号：US13211051

申请日：2011-08-16

申请人： Kenji Tanaka ,  Masao Fujita ,  Sadamu Kuse

发明人： Kenji Tanaka ,  Masao Fujita ,  Sadamu Kuse

IPC分类号： G11B5/71 ,  G11B5/714 ,  G11B5/738

CPC分类号： G11B5/71 ,  G11B5/70615 ,  G11B5/70626 ,  G11B5/714 ,  G11B5/738 ,  G11B5/78

摘要： A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 nm and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.

摘要翻译： 本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层，其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末，粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。 磁性粉末的平均粒径为10nm〜35nm。 当向磁性层施加压力时，润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。 当使用TSA（胶带间隔分析仪）测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时，洗涤后的间隔值为3至10nm，并且之前的间隔值 洗涤比洗涤后的间隔值小1〜5nm。

公开(公告)号：US08124256B2

公开(公告)日：2012-02-28

申请号：US11201157

申请日：2005-08-11

申请人： Sadamu Kuse ,  Kazuhiko Nakiri

发明人： Sadamu Kuse ,  Kazuhiko Nakiri

IPC分类号： G11B5/706

CPC分类号： G11B5/714 ,  G11B5/708

摘要： A magnetic recording medium with excellent high density recording performances and good durability comprising a non-magnetic substrate, a non-magnetic layer containing a non-magnetic powder and a binder formed on the non-magnetic substrate, and a magnetic layer having a thickness of less than 100 nm and containing a substantially particulate non-magnetic powder, a substantially particulate magnetic powder having an average particle size of less than 25 nm, and a binder, wherein an average particle size R of the non-magnetic powder contained in the magnetic layer and a thickness D of the magnetic powder satisfy the following relationship: 0.88≦R/D≦2.5.

摘要翻译： 一种具有优异的高密度记录性能和良好耐久性的磁记录介质，包括非磁性基板，含有非磁性粉末的非磁性层和形成在非磁性基板上的粘合剂，以及具有厚度为 小于100nm，并且含有基本上颗粒的非磁性粉末，平均粒度小于25nm的基本上颗粒的磁性粉末和粘合剂，其中包含在磁性材料中的非磁性粉末的平均粒径R 层和磁粉的厚度D满足以下关系：0.88＆nlE; R / D＆nlE; 2.5。

公开(公告)号：US20120045664A1

公开(公告)日：2012-02-23

申请号：US13211051

申请日：2011-08-16

申请人： Kenji TANAKA ,  Masao Fujita ,  Sadamu Kuse

发明人： Kenji TANAKA ,  Masao Fujita ,  Sadamu Kuse

IPC分类号： G11B5/70 ,  G11B5/714 ,  G11B5/71

CPC分类号： G11B5/71 ,  G11B5/70615 ,  G11B5/70626 ,  G11B5/714 ,  G11B5/738 ,  G11B5/78

摘要： A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 inn and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.

摘要翻译： 本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层，其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末，粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。 该磁性粉末的平均粒径为10至35纳米（含）。 当向磁性层施加压力时，润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。 当使用TSA（胶带间隔分析仪）测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时，洗涤后的间隔值为3至10nm，并且之前的间隔值 洗涤比洗涤后的间隔值小1〜5nm。

公开(公告)号：US07983007B2

公开(公告)日：2011-07-19

申请号：US12045820

申请日：2008-03-11

申请人： Kenji Tanaka ,  Sadamu Kuse

发明人： Kenji Tanaka ,  Sadamu Kuse

IPC分类号： G11B5/584

CPC分类号： G11B5/00826 ,  G11B5/4893 ,  G11B5/584 ,  G11B15/60

摘要： In a magnetic tape apparatus of the present invention, a magnetic head unit having magnetic elements capable of recording or reproducing information with respect to a magnetic tape includes a movable member that includes a magnetic element and has such a size that the movable member comes into contact with the magnetic tape over an entire region in a width direction, and is placed so as to move in the width direction of the magnetic tape, and a stationary member that is placed at a position adjacent to the movable member in a magnetic tape transport direction, wherein the movable member is moved in the width direction of the magnetic tape by a tracking servo mechanism during a tracking servo control. According to this configuration, a magnetic tape apparatus excellent in a tracking precision can be provided, in which even a magnetic tape with a high friction coefficient does not move following the movement of a magnetic head unit in the width direction.

摘要翻译： 在本发明的磁带装置中，具有能够记录或再现关于磁带的信息的磁性元件的磁头单元包括可移动部件，其包括磁性元件，并且具有可移动部件接触的尺寸 使磁带在宽度方向上的整个区域上，并且被放置成沿着磁带的宽度方向移动;以及静止部件，其被配置在磁带传送方向上与可动部件相邻的位置 其特征在于，在跟踪伺服控制期间，所述可动部件通过跟踪伺服机构在所述磁带的宽度方向上移动。 根据该结构，可以提供一种跟踪精度优异的磁带装置，其中即使在磁头单元沿宽度方向的移动之后，具有高摩擦系数的磁带也不会移动。

公开(公告)号：US07969680B2

公开(公告)日：2011-06-28

申请号：US12193981

申请日：2008-08-19

申请人： Kenji Tanaka ,  Sadamu Kuse ,  Kenichiro Yoshida

发明人： Kenji Tanaka ,  Sadamu Kuse ,  Kenichiro Yoshida

IPC分类号： G11B5/09

CPC分类号： G11B5/584

摘要： A magnetic tape of the present invention includes a plurality of data bands in which a data signal can be recorded and servo pattern portions composed of a burst signal. The servo pattern portions are formed at a predetermined interval in a longitudinal direction of the magnetic tape in a plurality of data bands, and positions of the servo pattern portions formed in the respective data bands in the longitudinal direction of the magnetic tape vary. According to such a configuration, a magnetic tape can be provided, which is traced stably by the magnetic head even if the magnetic tape is deformed due to temperature and humidity.

摘要翻译： 本发明的磁带包括可以记录数据信号的多个数据带和由突发信号组成的伺服图案部分。 伺服图案部分以多个数据带在磁带的纵向方向上以预定的间隔形成，并且形成在磁带的纵向方向上的各个数据带中的伺服图案部分的位置变化。 根据这样的结构，即使磁带由于温度和湿度而变形，也可以设置磁头来稳定地追踪磁头。

公开(公告)号：US07722969B2

公开(公告)日：2010-05-25

申请号：US11107914

申请日：2005-04-18

申请人： Kazuhiko Nakiri ,  Sadamu Kuse

发明人： Kazuhiko Nakiri ,  Sadamu Kuse

IPC分类号： G11B5/716

CPC分类号： G11B5/71 ,  G11B5/738

摘要： A magnetic tape comprising a non-magnetic support, a primer layer formed on one surface of the support, a magnetic layer formed on the primer layer, and a back layer formed on the other surface of the support, in which the tape has a total thickness of 4.0 to 5.4 μm, at least one of the primer layer and the magnetic layer contains a fatty acid amide, and an amount of the fatty acid amide extracted from the side of the magnetic layer with n-hexane is from 0.5 to 1.5 mg/cm3.

摘要翻译： 一种磁带，包括非磁性载体，形成在载体的一个表面上的底漆层，形成在底漆层上的磁性层，以及形成在载体的另一个表面上的背层，其中胶带具有总共 厚度为4.0〜5.4μm，底层和磁性层中的至少一层含有脂肪酸酰胺，用正己烷从磁性层一侧提取的脂肪酸酰胺的量为0.5〜1.5mg / cm3。

公开(公告)号：US20090296269A1

公开(公告)日：2009-12-03

申请号：US12476773

申请日：2009-06-02

申请人： Masao Fujita ,  Shinji Kawakami ,  Toshio Kawakita ,  Sadamu Kuse

发明人： Masao Fujita ,  Shinji Kawakami ,  Toshio Kawakita ,  Sadamu Kuse

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： In the apparatus and method of the invention, a servo signal reproduction unit generates a PES from a servo signal reproduced from a magnetic tape, and a frequency conversion unit performs FFT processing of the PES to generate frequency component information. Then, a filter value generation unit generates filter values based on the frequency component information and writes these to a memory. When recording various data signals to the magnetic tape, the filter values are read from the memory and a control filter serving as a notch filter is incorporated into a feedback control for a tracking servo. This enables periodic and narrow-band noise to be removed from a PES, consequently reducing PESs. Accordingly, learning-type optimum notch filter control that allows a magnetic head to follow recording tracks at high speed and with high precision is possible even when the recording track width is reduced and the tape speed is increased.

摘要翻译： 在本发明的装置和方法中，伺服信号再现单元从从磁带再现的伺服信号产生PES，并且频率转换单元执行PES的FFT处理以产生频率分量信息。 然后，滤波器值生成单元基于频率分量信息生成滤波器值，并将其写入存储器。 当将各种数据信号记录到磁带上时，从存储器中读取滤波器值，并且将用作陷波滤波器的控制滤波器并入用于跟踪伺服的反馈控制。 这使得能够从PES去除周期性和窄带噪声，从而减少PES。 因此，即使当记录磁道宽度减小并且磁带速度增加时，也可以使磁头以高速和高精度跟随记录磁道的学习型最佳陷波滤波器控制。

公开(公告)号：US20090109566A1

公开(公告)日：2009-04-30

申请号：US12193981

申请日：2008-08-19

申请人： Kenji Tanaka ,  Sadamu Kuse ,  Kenichiro Yoshida

发明人： Kenji Tanaka ,  Sadamu Kuse ,  Kenichiro Yoshida

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A magnetic tape of the present invention includes a plurality of data bands in which a data signal can be recorded and servo pattern portions composed of a burst signal. The servo pattern portions are formed at a predetermined interval in a longitudinal direction of the magnetic tape in a plurality of data bands, and positions of the servo pattern portions formed in the respective data bands in the longitudinal direction of the magnetic tape vary. According to such a configuration, a magnetic tape can be provided, which is traced stably by the magnetic head even if the magnetic tape is deformed due to temperature and humidity.

摘要翻译： 本发明的磁带包括可以记录数据信号的多个数据带和由突发信号组成的伺服图案部分。 伺服图案部分以多个数据带在磁带的纵向方向上以预定的间隔形成，并且形成在磁带的纵向方向上的各个数据带中的伺服图案部分的位置变化。 根据这样的结构，即使磁带由于温度和湿度而变形，也可以设置磁头来稳定地追踪磁头。

公开(公告)号：US20090052093A1

公开(公告)日：2009-02-26

申请号：US12191925

申请日：2008-08-14

申请人： Toshio Kawakita ,  Shinji Kawakami ,  Sadamu Kuse

发明人： Toshio Kawakita ,  Shinji Kawakami ,  Sadamu Kuse

IPC分类号： G11B5/33

CPC分类号： G11B5/40 ,  G11B5/29 ,  G11B5/3106 ,  G11B5/3967

摘要： A magnetic head assembly of the present invention includes a head rail having a plurality of head element portions each including a MR element and sliding portions that come into contact with a magnetic tape, and a protective film on a magnetic tape sliding surface of the head element portions and the sliding portions, wherein the protective film is formed in a portion other than the vicinity of both ends of the head rail in a traveling direction, and an outermost surface of the protective film, on which a magnetic tape is capable of sliding, is formed flat. Thus, a magnetic head assembly used in a magnetic tape apparatus can be provided, in which an output does not decrease due to the abrasion deformation of the head element portions and the increase in spacing by the adhesion of stain.

摘要翻译： 本发明的磁头组件包括具有多个磁头元件部分的磁头导轨，磁头元件部分各自包括MR元件和与磁带接触的滑动部分，以及在磁头元件的磁带滑动表面上的保护膜 部分和滑动部分，其中保护膜沿行进方向形成在头轨两端附近的部分中，以及保护膜的能够滑动的最外表面， 形成平坦。 因此，可以提供在磁带装置中使用的磁头组件，其中由于头元件部分的磨损变形而导致的输出不会减小，并且由于污渍的附着而增加间隔。

公开(公告)号：US20080285171A1

公开(公告)日：2008-11-20

申请号：US12019344

申请日：2008-01-24

申请人： Kenji TANAKA ,  Kenichiro Yoshida ,  Masao Fujita ,  Sadamu Kuse

发明人： Kenji TANAKA ,  Kenichiro Yoshida ,  Masao Fujita ,  Sadamu Kuse

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B5/024

摘要： A servo signal recording apparatus and servo-signal recording method for recording a servo signal on a magnetic tape that includes a magnetic layer having a data area capable of storing data and a servo area capable of storing a servo signal, the apparatus including a transportation unit for transporting the magnetic tape; a DC erasing unit on a downstream side in a magnetic tape transportation direction that performs DC erasure to a surface layer portion of the magnetic layer by magnetization in a longitudinal direction of the magnetic tape; and a servo signal recording unit on a downstream side of the DC erasing unit in the magnetic tape transportation direction, that rubs against the magnetic layer of the magnetic tape, and records a servo signal in the servo area by magnetization in a direction opposite to a direction of the magnetization of the DC erasing unit.

摘要翻译： 一种用于在包括具有能够存储数据的数据区的磁性层和能够存储伺服信号的伺服区的磁带上记录伺服信号的伺服信号记录装置和伺服信号记录方法，所述装置包括传送单元 用于运送磁带; 在磁带传送方向下游侧的直流擦除单元，通过磁带的长度方向的磁化对磁性层的表层部进行直流擦除; 以及伺服信号记录单元，其在磁带传送方向上的直流擦除单元的下游侧，摩擦磁带的磁性层，并且通过磁化沿与磁带的相反方向的磁化将伺服信号记录在伺服区域中 直流擦除单元的磁化方向。