公开(公告)号：US06620483B2

公开(公告)日：2003-09-16

申请号：US10103885

申请日：2002-03-25

申请人： Akira Kasuga ,  Minoru Sueki

发明人： Akira Kasuga ,  Minoru Sueki

IPC分类号： G11B5716

CPC分类号： G11B5/716 ,  Y10T428/24 ,  Y10T428/24355 ,  Y10T428/24975

摘要： Provided is a magnetic recording medium suited to magnetic recording and reproduction systems employing linear methods and incorporating magnetoresistive reproduction heads. The magnetic recording medium comprising a magnetic layer for servo signal recording, a nonmagnetic layer, and a magnetic layer for information recording in this order on a nonmagnetic support, wherein said magnetic layer for information recording exhibits a coercivity of at least 7.96 kA/m (100 Oe) higher than a coercivity of said magnetic layer for servo signal recording and an interface roughness at the interface of said magnetic layer for servo signal recording and said nonmagnetic layer ranges from 7 to 12 nm.

公开(公告)号：US20050117246A1

公开(公告)日：2005-06-02

申请号：US10962442

申请日：2004-10-13

申请人： Minoru Sueki ,  Tetsuji Nishida

发明人： Minoru Sueki ,  Tetsuji Nishida

IPC分类号： G11B23/30 ,  G11B5/008 ,  G11B5/09 ,  G11B5/584 ,  G11B20/12 ,  G11B23/36

CPC分类号： G11B5/00813 ,  G11B5/00878 ,  G11B5/584

摘要： Disclosed is a magnetic tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The magnetic tape includes servo tracks being recorded thereon. These servo tracks contain respective servo signals, and are arranged lengthwise and adjacent to one another over a whole of a width or a part of the magnetic tape. Further, each of the servo tracks includes address signals being recorded thereon at predetermined intervals in isolation from the corresponding servo signals. These address signals indicate their respective locations of corresponding one of the servo tracks and their respective lengthwise locations on the magnetic tape. In addition, the servo signals are read from the respective servo bands, and are used to adjust tracking of a magnetic head on the magnetic tape.

摘要翻译： 公开了一种有助于高记录密度并且实现数据轨道的宽度和数据格式的增强的灵活性的磁带。 磁带包括记录在其上的伺服磁道。 这些伺服轨道包含相应的伺服信号，并且在磁带的整个宽度或一部分上彼此纵向地并且彼此相邻布置。 此外，每个伺服轨道包括以相对于伺服信号隔离的预定间隔记录在其上的地址信号。 这些地址信号表示它们在磁带上的对应的一个伺服磁道及其各自的纵向位置的相应位置。 此外，从各伺服带读取伺服信号，并用于调整磁带上磁头的跟踪。

公开(公告)号：US06881474B2

公开(公告)日：2005-04-19

申请号：US10206201

申请日：2002-07-29

申请人： Yutaka Kakuishi ,  Masatoshi Takahashi ,  Minoru Sueki

发明人： Yutaka Kakuishi ,  Masatoshi Takahashi ,  Minoru Sueki

IPC分类号： B32B5/16 ,  G11B5/70 ,  G11B5/73 ,  G11B5/735 ,  G11B5/78

CPC分类号： G11B5/78 ,  B32B5/16 ,  G11B5/70 ,  G11B5/7305 ,  G11B5/735 ,  Y10T428/24975 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/266 ,  Y10T428/31935

摘要： A magnetic tape favorably employable for recording computer data, comprising a support web, a magnetic layer and a back-coat layer and having a thickness of 3 to 10 μm, should have a curl having a radius of curvature of greater than 10 mm in its longitudinal direction and a curl having a radius of curvature of greater than 40 mm in its width direction, wherein the curl in the width direction gives a convex surface on the side of the magnetic layer.

摘要翻译： 适于用于记录计算机数据的磁带，其包括支撑腹板，磁性层和背涂层并且具有3至10μm的厚度，应具有其曲率半径大于10mm的卷曲 纵向方向和在其宽度方向上具有大于40mm的曲率半径的卷曲，其中宽度方向上的卷曲在磁性层的侧面形成凸面。

公开(公告)号：US06667119B2

公开(公告)日：2003-12-23

申请号：US09950694

申请日：2001-09-13

申请人： Kiyomi Ejiri ,  Minoru Sueki

发明人： Kiyomi Ejiri ,  Minoru Sueki

IPC分类号： G11B566

CPC分类号： G11B5/716

摘要： A magnetic recording medium having on a support at least two magnetic layers that include an uppermost magnetic layer for recording information and a lower magnetic layer for recording servo signals, wherein the uppermost magnetic layer has a coercive force Hc(U) [KA/m] at most 265 times as much as a saturated magnetic flux density Bs[T] of a recording head used for information recording and the lower magnetic layer has a coercive force Hc(L) [KA/m] at least 159 times as much as the saturated magnetic flux density Bs[T] of the recording head used for information recording, thereby ensuring highly accurate servo write and elevation of recording density.

摘要翻译： 一种磁记录介质，在至少两个磁性层上具有至少两个磁性层，所述磁性层包括用于记录信息的最上层的磁性层和用于记录伺服信号的下部磁性层，其中最上面的磁性层具有矫顽力Hc（U）[KA / m] 是用于信息记录的记录头的饱和磁通密度Bs [T]的265倍以下，下磁性层的矫顽力Hc（L）[KA / m]至少为 用于信息记录的记录头的饱和磁通密度Bs [T]，从而确保高度精确的伺服写入和记录密度的提高。

公开(公告)号：US07379258B2

公开(公告)日：2008-05-27

申请号：US10727046

申请日：2003-12-04

申请人： Toru Nakao ,  Minoru Sueki ,  Takahisa Izumida

发明人： Toru Nakao ,  Minoru Sueki ,  Takahisa Izumida

IPC分类号： G11B21/02

CPC分类号： G11B5/584

摘要： A method for inspecting a head unit moving device is characterized by having the steps of running a inspection use tape in which a servo signal is written displaced in a width direction of a magnetic tape at a predetermined frequency and amplitude; measuring a position of a head unit practically moved in a width direction of the inspection use tape in response to the servo signal; and calculating a difference between the position and a position to be instructed so as to move the head unit in response to the servo signal, wherein the head unit moving device moves the head unit with a servo signal reading head, a data signal recording head, and a data signal reproducing head in the width direction of the magnetic tape in response to the servo signal read from the magnetic tape by the servo signal reading head.

摘要翻译： 一种用于检查头单元移动装置的方法的特征在于具有以预定的频率和幅度运行在磁带的宽度方向写入伺服信号的检查用带的步骤; 响应于所述伺服信号，测量实际上在检查用带的宽度方向上移动的头单元的位置; 并且根据所述伺服信号计算要指示的位置和位置之间的差异，以便移动所述头单元，其中所述头单元移动装置用伺服信号读取头，数据信号记录头移动所述头单元， 以及响应于通过伺服信号读取头从磁带读取的伺服信号，在磁带的宽度方向上的数据信号再现头。

公开(公告)号：US07154694B2

公开(公告)日：2006-12-26

申请号：US11043116

申请日：2005-01-27

申请人： Minoru Sueki ,  Toru Nakao ,  Takahisa Izumida

发明人： Minoru Sueki ,  Toru Nakao ,  Takahisa Izumida

IPC分类号： G11B15/18

CPC分类号： G11B5/584 ,  G11B15/60 ,  G11B23/00 ,  G11B23/36

摘要： Disclosed is a servo writer which forms servo bands on information recording media so as to enable a drive to track the servo bands with great accuracy by using a recording/reproducing head. The servo writer includes a driving mechanism for running a tape-shaped information recording medium, a servo pattern writing means for writing servo patterns on the running tape-shaped information recording medium, thereby forming servo bands thereon, and a tape edge forming mechanism for cutting evenly an edge of the running tape-shaped information recording medium, so that the edge becomes parallel to the servo bands.

摘要翻译： 公开了一种在信息记录介质上形成伺服带的伺服写入器，以便驱动器可以通过使用记录/再现头以高精度跟踪伺服带。 伺服写入器包括用于运行带状信息记录介质的驱动机构，用于在运行中的带状信息记录介质上写入伺服图案的伺服模式写入装置，从而在其上形成伺服带，以及用于切割的带边缘形成机构 均匀地运行的带状信息记录介质的边缘，使得边缘变得平行于伺服带。

公开(公告)号：US06721123B2

公开(公告)日：2004-04-13

申请号：US09946470

申请日：2001-09-06

申请人： Minoru Sueki ,  Kiyomi Ejiri ,  Kiyoo Morita

发明人： Minoru Sueki ,  Kiyomi Ejiri ,  Kiyoo Morita

IPC分类号： G11B5584

CPC分类号： G11B5/78 ,  G11B5/00813 ,  G11B5/584 ,  G11B23/107 ,  G11B23/30

摘要： A magnetic tape includes two servo tracks respectively extending in the longitudinal direction of the magnetic tape from the tape-width-direction two end portions of the magnetic tape, and a data area interposed between the two servo tracks. The azimuth angle &thgr;° of the data track of the data area satisfies an equation of 0 ≤ θ ≤ tan - 1 ⁡ ( 10 ⁢ p a × L ) , where a data track pitch is expressed as p (m), a magnetic tape width is expressed as L (m) and the greatest dimension change rate is expressed as (a) (%). Since the azimuth angle &thgr;° is determined in this manner, even in the case where the magnetic tape is deformed in shape and/or changed in dimension, an offtrack error can be prevented and thus, the data track can be traced in the data area accurately.

摘要翻译： 磁带包括分别从磁带的带宽度方向的两个端部沿着磁带的纵向方向延伸的两个伺服磁道以及插入在两个伺服磁道之间的数据区域。 数据区的数据轨迹的方位角θ°满足数据轨迹间距表示为p（m）的方程式，磁带宽度表示为L（m），最大尺寸变化率表示为（ 一个） （％）。 由于以这种方式确定方位角θ°，所以即使在磁带的形状变形和/或尺寸变化的情况下，也可以防止纵横差错，从而可以在数据区域中追踪数据轨迹 准确。

公开(公告)号：US07014927B2

公开(公告)日：2006-03-21

申请号：US10738308

申请日：2003-12-18

申请人： Minoru Sueki ,  Ryota Suzuki

发明人： Minoru Sueki ,  Ryota Suzuki

IPC分类号： G11B5/70

CPC分类号： G11B5/70

摘要： A magnetic recording medium comprising: a support; and at least one magnetic layer containing a ferromagnetic powder and a binder, wherein a center line average roughness of the magnetic layer measured with a laser interferometer is from 1 to 3 nm, a skewness is 0 or more and less than 1.0, and a maximum difference of elevation of peak/valley is 50 nm or less.

摘要翻译： 一种磁记录介质，包括：支撑体; 以及含有铁磁粉末和粘合剂的至少一个磁性层，其中用激光干涉仪测量的磁性层的中心线平均粗糙度为1〜3nm，偏度为0以上且小于1.0，最大值为 峰/谷的高程差为50nm以下。

公开(公告)号：US06916521B2

公开(公告)日：2005-07-12

申请号：US10021747

申请日：2001-12-13

申请人： Tadashi Ishiguro ,  Yutaka Kakuishi ,  Satoru Hayakawa ,  Minoru Sueki

发明人： Tadashi Ishiguro ,  Yutaka Kakuishi ,  Satoru Hayakawa ,  Minoru Sueki

IPC分类号： B32B27/40 ,  C08G18/08 ,  C08G18/66 ,  G11B5/41 ,  G11B23/03 ,  G11B23/04 ,  G11B23/50 ,  G11B5/733

CPC分类号： B32B27/40 ,  C08G18/0828 ,  C08G18/6607 ,  G11B5/41 ,  G11B23/0327 ,  G11B23/049 ,  G11B23/50 ,  Y10T428/24355 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/254 ,  Y10T428/27 ,  Y10T428/273 ,  Y10T428/277

摘要： A cleaning medium for a magnetic recording apparatus is disclosed, comprising a nonmagnetic support having provided thereon a lower coating layer mainly containing a nonmagnetic inorganic powder and a binder, and a cleaning layer containing at least a ferromagnetic inorganic powder and a binder provided on the lower coating layer, wherein the thickness of the cleaning layer is from 0.05 to 1.0 μm, the thickness of the lower coating layer is from 0.2 to 5.0 μm, the thickness of the support is from 2.0 to 10 μm, and the thickness in total of the cleaning medium (cleaning tape) is from 4.0 to 15 μm.

摘要翻译： 公开了一种用于磁记录装置的清洁介质，包括：非磁性载体，其上设置有主要包含非磁性无机粉末和粘合剂的下涂层，以及至少含有铁磁性无机粉末和粘合剂的清洗层， 涂层，其中清洁层的厚度为0.05-1.0μm，下涂层的厚度为0.2-5.0μm，载体的厚度为2.0-10μm，总厚度为 清洁介质（清洁带）为4.0〜15μm。

公开(公告)号：US06652999B2

公开(公告)日：2003-11-25

申请号：US09951392

申请日：2001-09-14

申请人： Kiyomi Ejiri ,  Minoru Sueki ,  Tsutomu Sugisaki

发明人： Kiyomi Ejiri ,  Minoru Sueki ,  Tsutomu Sugisaki

IPC分类号： G11B568

CPC分类号： G11B5/716 ,  Y10T428/265

摘要： A magnetic recording medium comprising two or more magnetic layers provided on a support, wherein an easily magnetizable axis of an uppermost magnetic layer and an easily magnetizable axis of a lower magnetic layer are oriented in directions crossing each other at right angles, which can attain both a highly precise servo write and a higher recording density.

摘要翻译： 一种磁记录介质，包括设置在支撑体上的两个或多个磁性层，其中最上层的磁性层的容易磁化的轴线和下部磁性层的容易磁化的轴线沿垂直方向交叉的方向取向， 高精度的伺服写入和更高的记录密度。