公开(公告)号：US20080237938A1

公开(公告)日：2008-10-02

申请号：US12078166

申请日：2008-03-27

申请人： Narutoshi Fukuzawa ,  Minoru Fujita ,  Daisuke Yoshitoku ,  Mitsuru Takai ,  Kazuya Shimakawa

发明人： Narutoshi Fukuzawa ,  Minoru Fujita ,  Daisuke Yoshitoku ,  Mitsuru Takai ,  Kazuya Shimakawa

IPC分类号： B29C35/08

CPC分类号： B29C37/0053 ,  B29C35/0894 ,  B29C2035/0827 ,  B29L2017/005 ,  G11B5/855 ,  G11B7/263

摘要： A method for manufacturing an information recording medium, a method of transferring a concavo-convex pattern, and a transfer apparatus are provided which are capable of curing a resin material with reliability even when using a light-transmitting stamper repeatedly. A stamper made of a light-transmitting resin, having a predetermined concavo-convex pattern formed on its transfer area, is inspected for an optical characteristic. The stamper is brought into contact with an energy-ray curable resin material applied to an object to be processed, thereby transferring the concavo-convex pattern to the resin material, and the resin material is irradiated with an energy ray through the stamper so that the resin material cures. The stamper is used a plurality of times to repeat these steps a plurality of times, thereby manufacturing a plurality of information recording media.

摘要翻译： 提供一种用于制造信息记录介质的方法，传递凹凸图案的方法和传送装置，其即使在重复使用透光压模时也能够可靠地固化树脂材料。 检查由传输区域形成的具有预定凹凸图案的透光树脂制成的压模的光学特性。 使压模与施加到被处理物体的能量射线固化性树脂材料接触，由此将凹凸图案转印到树脂材料上，并通过压模对能量射线照射树脂材料，使得 树脂材料固化。 多次使用压模多次重复这些步骤，从而制造多个信息记录介质。

公开(公告)号：US20080144230A1

公开(公告)日：2008-06-19

申请号：US12000283

申请日：2007-12-11

申请人： Akimasa Kaizu ,  Yoshikazu Soeno ,  Kazuya Shimakawa

发明人： Akimasa Kaizu ,  Yoshikazu Soeno ,  Kazuya Shimakawa

IPC分类号： G11B5/33

CPC分类号： G11B5/1278 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/232 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855

摘要： A magnetic recording-reproducing apparatus includes: a magnetic recording medium in which portions corresponding to track portions serve as recording areas and in which portions between the recording areas serve as non-recording areas; and a magnetic head having a main pole and a side shield disposed on both sides of the main pole in a cross-track direction. In the magnetic recording-reproducing apparatus, following inequality (I) is satisfied: S>Tw/2+Gw   (I) where Tw is a track width, Gw is a gap width, and S is a distance between the center of the main pole of the magnetic head and an edge on the main pole side of each of the side shields.

摘要翻译： 磁记录再现装置包括：磁记录介质，其中对应于轨道部分的部分用作记录区域，并且记录区域之间的部分用作非记录区域; 以及磁头，其具有设置在所述主极的横向方向的两侧上的主极和侧面屏蔽。 在磁记录重放装置中，满足以下不等式（I）：<？in-line-formula description =“In-line formula”end =“lead”？> S> Tw / 2 + Gw（I） 在线公式描述=“在线公式”end =“tail”？>其中Tw是轨道宽度，Gw是间隙宽度，S是磁头的主极的中心与 每个侧护板的主极侧上的边缘。

公开(公告)号：US20070115580A1

公开(公告)日：2007-05-24

申请号：US11557571

申请日：2006-11-08

申请人： Makoto MORIYA ,  Kazuya SHIMAKAWA ,  Kuniyasu ITO

发明人： Makoto MORIYA ,  Kazuya SHIMAKAWA ,  Kuniyasu ITO

IPC分类号： G11B5/596 ,  G11B21/02

CPC分类号： G11B5/59627 ,  G11B5/5965

摘要： A recording/reproducing apparatus includes: a magnetic recording medium on which data track patterns are formed in data track pattern regions by a pattern with recording regions and non-recording regions and on which servo patterns are formed in servo pattern regions by the pattern; a recording head that writes signals on the medium; a reproducing head that reads signals written on the medium; and a control unit that controls the writing of signals by the recording head and the reading of signals by the reproducing head and measures a predetermined parameter for at least one of the recording head and the reproducing head by writing and reading measurement signals on the medium. The control unit writes the measurement signals using the recording head on first recording regions formed continuously in a radial direction of the medium out of the recording regions formed in the servo pattern regions, reads the measurement signals using the reproducing head, and measures the parameter based on the read measurement signals.

摘要翻译： 记录/再现装置包括：磁记录介质，通过具有记录区域和非记录区域的图案在数据轨道图案区域中形成数据轨道图案，并且通过该图案在伺服图案区域中形成伺服图案; 在介质上写入信号的记录头; 读取写在介质上的信号的再现头; 以及控制单元，其通过记录头来控制信号的写入和由再现头读取信号，并且通过在介质上写入和读取测量信号来测量记录头和再现头中的至少一个的预定参数。 控制单元使用记录头将测量信号写入在形成在伺服模式区域中的记录区域中的在介质的径向方向上连续形成的第一记录区域上，使用再现头读取测量信号，并且测量基于参数的参数 对读取的测量信号。

公开(公告)号：US20050286155A1

公开(公告)日：2005-12-29

申请号：US11111943

申请日：2005-04-22

申请人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

发明人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/82

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/59655 ,  G11B5/743 ,  G11B5/82

摘要： The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, Tp, and Wr where W1 represents an upper side corresponding to the surface of a convex magnetic recording layer and W2 a lower side corresponding to the lower surface of the convex magnetic recording layer in the trapezoidal shape in the track width direction, Tp represents a data track pitch of a data information recording portion, and Wr represents a read width of a magnetic head. Therefore, the burst pattern shape makes it possible to largely reduce a production load in processing and still to obtain an accurate position error signal.

摘要翻译： 将离散介质中的突发图案形状分别设定为在轨道宽度方向和轨道圆周方向上具有大致梯形形状的形状（截头四角锥形状），并且在W 1，W 2， Tp和Wr，其中W 1表示对应于凸形磁记录层的表面的上侧，W 2表示与轨道宽度方向上的梯形形状的凸形磁记录层的下表面对应的下侧，Tp表示 数据信息记录部分的数据磁道间距，Wr表示磁头的读宽度。 因此，突发图案形状使得可以大大降低处理中的生产负荷，并且仍然获得精确的位置误差信号。

公开(公告)号：US07940494B2

公开(公告)日：2011-05-10

申请号：US12003919

申请日：2008-01-03

申请人： Takahiro Suwa ,  Kazuya Shimakawa

发明人： Takahiro Suwa ,  Kazuya Shimakawa

IPC分类号： G11B5/33

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, the recording layer including recording elements each formed as a convex portion of the recording layer. Surface steps are formed in an outer area including a radially outermost portion of a recording area. Each surface step is formed in such a manner that a portion over a concave portion between the recording elements is recessed toward the substrate to a level below a portion over the recording element. The surface steps are formed such that the recording area can be sectioned into an annular area adjoining the outer area and the outer area where height of the surface steps is larger than that in the annular area.

摘要翻译： 磁记录介质包括基板和在基板上以预定的凹凸图案形成的记录层，记录层包括各自形成为记录层的凸部的记录元件。 表面台阶形成在包括记录区域的径向最外侧部分的外部区域中。 每个表面台阶形成为使得记录元件之间的凹部上方的部分朝向基板凹陷到记录元件上方的一个以下的水平。 表面台阶形成为使得记录区域可以被分割成与外部区域相邻的环形区域和表面台阶的高度大于环形区域中的高度的外部区域。

公开(公告)号：US07864469B2

公开(公告)日：2011-01-04

申请号：US12342860

申请日：2008-12-23

申请人： Yoshikazu Soeno ,  Kazuya Shimakawa

发明人： Yoshikazu Soeno ,  Kazuya Shimakawa

IPC分类号： G11B5/09

CPC分类号： G11B5/82 ,  B29C43/36 ,  B29C2043/3634 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： Data track patterns and servo patterns are formed on an information recording medium by concave/convex patterns divided into ring-shaped regions that are concentric with the data track patterns. In the servo patterns, a unit convex length and a unit concave length along the direction of rotation increase in each ring-shaped region from an inside to an outside of the ring-shaped region in proportion to the distance from the center of the data track patterns and a value produced by dividing an average unit convex (or concave) length inside each ring-shaped region by a distance from the center to the ring-shaped region decreases toward the outer periphery of the medium. The ring-shaped regions include plural first regions between an innermost region and an outermost region. Respective lengths along a radial direction of the first regions increase toward an outer periphery of the medium.

摘要翻译： 数据轨道图案和伺服图案通过分成与数据轨道图案同心的环形区域的凹/凸图案形成在信息记录介质上。 在伺服图案中，沿着旋转方向的单位凸长度和单位凹长度在每个环形区域中从环形区域的内部到外部成比例地与数据轨迹的中心的距离成比例地增加 通过将每个环形区域内的平均单位凸（或凹）长度除以从中心到环状区域的距离而产生的图案和值朝向介质的外周减小。 环状区域包括在最内区域和最外区域之间的多个第一区域。 沿着第一区域的径向的各长度朝向介质的外周边增加。

公开(公告)号：US07741229B2

公开(公告)日：2010-06-22

申请号：US11297353

申请日：2005-12-09

申请人： Takahiro Suwa ,  Shuichi Okawa ,  Kazuya Shimakawa

发明人： Takahiro Suwa ,  Shuichi Okawa ,  Kazuya Shimakawa

IPC分类号： H01L21/302

CPC分类号： C23F4/00 ,  B82Y10/00 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855

摘要： A method for manufacturing a magnetic recording medium is provided, which can manufacture a magnetic recording medium that includes a recording layer having a concavo-convex pattern and has a sufficiently flat surface. The method includes the steps of: forming an object to be processed including a recording layer having a predetermined concavo-convex pattern formed over a substrate and a first mask layer (temporary underlying material) formed at least on recording elements (convex portions) of the recording layer; depositing a filling material on the object to be processed to fill concave portions; removing a part of the filling material by dry etching to expose at least side faces of the first mask layer; and removing the first mask layer by an etching method in which an etching rate of the first mask layer is higher than that of the filling material to flatten a surface.

摘要翻译： 提供一种制造磁记录介质的方法，其可以制造包括具有凹凸图案的记录层并具有足够平坦表面的磁记录介质。 该方法包括以下步骤：形成待处理对象，其包括在基板上形成具有预定凹凸图案的记录层，以及至少形成在所述记录元件（凸起部分）上的第一掩模层 记录层 将填充材料沉积在待处理物体上以填充凹部; 通过干蚀刻去除一部分填充材料以暴露第一掩模层的至少侧面; 并且通过蚀刻方法去除第一掩模层，其中第一掩模层的蚀刻速率高于填充材料的蚀刻速率以使表面变平。

公开(公告)号：US07541106B2

公开(公告)日：2009-06-02

申请号：US11334343

申请日：2006-01-19

申请人： Shuichi Okawa ,  Mitsuru Takai ,  Kazuya Shimakawa

发明人： Shuichi Okawa ,  Mitsuru Takai ,  Kazuya Shimakawa

IPC分类号： G11B5/66

CPC分类号： G11B5/855

摘要： A magnetic recording medium is provided that includes a recording layer having recording elements formed as convex portions and a filling material filled within the concave portions between the recording elements. The medium is highly reliable and has a surface less liable to damages when a magnetic head contacts the surface, so that good recording/reproducing characteristics are ensured. The magnetic recording medium includes a recording layer formed in a predetermined concavo-convex pattern over a substrate and having recording elements formed as convex portions in the concavo-convex pattern and a filling material filled within the concave portions between the recording elements. The filling material is substantially composed of Si and O, and the ratio of the number of O atoms to the number of Si atoms is equal to or more than 1.5 and less than 2.

摘要翻译： 提供了一种磁记录介质，其包括具有形成为凸部的记录元件和填充在记录元件之间的凹部内的填充材料的记录层。 介质是高度可靠的，并且当磁头接触表面时表面较不易损坏，从而确保良好的记录/再现特性。 磁记录介质包括在基板上形成为预定的凹凸图案的记录层，并且具有形成为凹凸图案中的凸部的记录元件和填充在记录元件之间的凹部内的填充材料。 填充材料基本上由Si和O组成，O原子数与Si原子数之比等于或大于1.5且小于2。

公开(公告)号：US20080304175A1

公开(公告)日：2008-12-11

申请号：US12036367

申请日：2008-02-25

申请人： Makoto MORIYA ,  Kazuya SHIMAKAWA

发明人： Makoto MORIYA ,  Kazuya SHIMAKAWA

IPC分类号： G11B5/584

CPC分类号： G11B5/59627

摘要： A recording/reproducing apparatus includes: a rotary-type magnetic recording medium including a track pattern with concentric or spiral data recording tracks; a composite magnetic head including a reproducing element that reads magnetic signals from the medium and a recording element that writes magnetic signals on the medium; a control unit that moves the magnetic head over the medium to carry out tracking servo control on the reproducing element or the recording element to keep the element on a desired track; and a storage unit that stores offset information that specifies offsets for calculating an adjustment used to adjust a head position of the magnetic head during tracking servo control. The stored offset information specifies at least two different offsets per revolution of the medium. During tracking servo control, the control unit changes the adjustment at least once per revolution of the medium in accordance with offsets specified based on the offset information.

摘要翻译： 记录/再现装置包括：旋转式磁记录介质，包括具有同心或螺旋数据记录轨道的轨道图案; 包括从介质读取磁信号的再现元件和在介质上写入磁信号的记录元件的复合磁头; 控制单元，其使所述磁头移动到所述介质上，以对所述再现元件或所述记录元件执行跟踪伺服控制，以将所述元件保持在期望的轨道上; 以及存储单元，其存储指定用于计算用于在跟踪伺服控制期间调节磁头的位置的调整的偏移的偏移信息。 存储的偏移信息指定介质每转至少两个不同的偏移量。 在跟踪伺服控制期间，控制单元根据基于偏移信息指定的偏移量，每次旋转介质至少改变一次调整。

公开(公告)号：US20080170318A1

公开(公告)日：2008-07-17

申请号：US12004074

申请日：2007-12-20

申请人： Takahiro Suwa ,  Kazuya Shimakawa

发明人： Takahiro Suwa ,  Kazuya Shimakawa

IPC分类号： G11B5/09

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, and the recording layer includes recording elements each formed as a convex portion of the recording layer. Surface steps are formed in an inner area including a radially innermost portion of a recording area. Each surface step is formed in such a manner that a portion over a concave portion between the recording elements is recessed toward a substrate to a level below a portion over the recording element. The surface steps are formed such that the recording area can be sectioned into an annular area adjoining the inner area and the inner area where height of the surface steps is larger than that in the annular area.

摘要翻译： 磁记录介质包括在基板上形成为预定的凹凸图案的基板和记录层，记录层包括各自形成为记录层的凸部的记录元件。 在包括记录区域的径向最内部的内部区域中形成表面台阶。 每个表面台阶形成为使得记录元件之间的凹部上方的部分朝向基板凹陷到记录元件上方的一级以下。 表面台阶形成为使得记录区域可以被分割成与内部区域相邻的环形区域和表面台阶的高度大于环形区域中的高度的内部区域。