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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。
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2.发明申请公开(公告)号：US20050286155A1
公开(公告)日：2005-12-29
申请号：US11111943
申请日：2005-04-22
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。
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3.发明授权公开(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
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。
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4.发明授权公开(公告)号：US07158340B2
公开(公告)日：2007-01-02
申请号：US11111943
申请日：2005-04-22
IPC分类号： G11B5/596
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。
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公开(公告)号：US20050243467A1
公开(公告)日：2005-11-03
申请号：US11115116
申请日：2005-04-27
CPC分类号： G11B11/10584 , B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/855
摘要： A magnetic recording medium having high reliability is provided, in which concave portions between recording elements formed as convex portions of a concavo-convex pattern are approximately completely filled with a non-magnetic material. The magnetic recording medium is a plate-like body including: a substrate; a recording layer that is formed in a predetermined concavo-convex pattern over the substrate and includes recording elements for recording information formed as convex portions of the concavo-convex pattern; and the non-magnetic material filling concave portions between the recording elements. Side faces of the recording elements are inclined to face a surface of the plate-like body on a side toward which the recording elements 16 project in the concavo-convex pattern. An inclination angle of the side faces of the recording elements with respect to a direction perpendicular to that surface is smaller than 90° and 5° or more.
摘要翻译： 提供了具有高可靠性的磁记录介质，其中形成为凹凸图案的凸部的记录元件之间的凹部大致完全填充有非磁性材料。 磁记录介质是板状体，包括：基板; 记录层，其形成在所述基板上的预定的凹凸图案中，并且包括用于记录形成为所述凹凸图案的凸部的信息的记录元件; 和非磁性材料填充记录元件之间的凹部。 记录元件的侧面在记录元件16突出于凹凸图案的一侧面对板状体的表面倾斜。 记录元件的侧面相对于与该表面垂直的方向的倾斜角度小于90°和5°以上。
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公开(公告)号：US08040633B2
公开(公告)日：2011-10-18
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
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）：其中Tw是磁道宽度的S> Tw / 2 + Gw（I），Gw是间隙宽度，S是主体的中心之间的距离 磁头的极点和每个侧护板的主极侧上的边缘。
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公开(公告)号：US07672075B2
公开(公告)日：2010-03-02
申请号：US11265152
申请日：2005-11-03
申请人： Yoshikazu Soeno , Kazuya Shimakawa
发明人： Yoshikazu Soeno , Kazuya Shimakawa
CPC分类号： G11B5/82 , B82Y10/00 , B82Y40/00 , G03F7/0002 , G11B5/59688 , G11B5/743 , G11B5/855 , G11B5/865
摘要： In a magnetic recording medium including a servo pattern region having a servo pattern formed of a concave/convex pattern having convex portions and concave portions and a data recording region, the region having a data track pattern, the convex portions are formed in an address pattern region of the servo pattern region such that the maximum opening lengths, which are located in the respective same radius regions of the respective opening lengths along the rotating direction of a substrate of the concave portions constituting the concave/convex pattern are set to first lengths that are double the minimum opening lengths along the rotating direction of the concave portions in the respective same radius regions. With this arrangement, the magnetic recording medium can securely read a magnetic signal and has a servo pattern having excellent surface smoothness.
摘要翻译： 在包括具有由具有凸部和凹部的凹凸图案形成的伺服图案的伺服图案区域和数据记录区域的磁记录介质中，所述区域具有数据轨道图案，所述凸部以地址图形形成 区域，使得位于构成凹凸图案的凹部的基板的旋转方向的各开口长度的各自的相同半径区域中的最大开口长度被设定为第一长度， 是在相同的半径区域中沿着凹部的旋转方向的最小开口长度的两倍。 通过这种布置，磁记录介质可以安全地读取磁信号并具有具有优异表面平滑度的伺服图案。
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公开(公告)号：US07604880B2
公开(公告)日：2009-10-20
申请号：US11085522
申请日：2005-03-22
CPC分类号： G11B5/855
摘要： In an information recording medium where respective concave parts of a magnetic layer, which is formed on at least one side e of a substrate and in which a predetermined convex/concave pattern has been formed, are filled with non-magnetic material and non-magnetic layers are formed by the non-magnetic material in at least partial regions of respective upper surfaces of respective convex parts of the magnetic layer, the non-magnetic layers are formed so that parts thereof protrude further in a direction in which the convex parts protrude than other parts of the non-magnetic layers.
摘要翻译： 在其中形成在基板的至少一个面e上并且其中形成有预定的凸/凹图案的磁性层的各个凹部填充有非磁性材料和非磁性的信息记录介质中 在磁性层的各个凸部的各个上表面的至少部分区域中，由非磁性材料形成层，非磁性层形成为使得其部分在凸部突出的方向上进一步突出， 其他部分的非磁性层。
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公开(公告)号：US07482070B2
公开(公告)日：2009-01-27
申请号：US11115116
申请日：2005-04-27
IPC分类号： G11B5/66
CPC分类号： G11B11/10584 , B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/855
摘要： A magnetic recording medium having high reliability is provided, in which concave portions between recording elements formed as convex portions of a concavo-convex pattern are approximately completely filled with a non-magnetic material. The magnetic recording medium is a plate-like body including: a substrate; a recording layer that is formed in a predetermined concavo-convex pattern over the substrate and includes recording elements for recording information formed as convex portions of the concavo-convex pattern; and the non-magnetic material filling concave portions between the recording elements. Side faces of the recording elements are inclined to face a surface of the plate-like body on a side toward which the recording elements 16 project in the concavo-convex pattern. An inclination angle of the side faces of the recording elements with respect to a direction perpendicular to that surface is smaller than 90° and 5° or more.
摘要翻译： 提供了具有高可靠性的磁记录介质，其中形成为凹凸图案的凸部的记录元件之间的凹部大致完全填充有非磁性材料。 磁记录介质是板状体，包括：基板; 记录层，其形成在所述基板上的预定的凹凸图案中，并且包括用于记录形成为所述凹凸图案的凸部的信息的记录元件; 和非磁性材料填充记录元件之间的凹部。 记录元件的侧面在记录元件16突出于凹凸图案的一侧面对板状体的表面倾斜。 记录元件的侧面相对于与该表面垂直的方向的倾斜角度小于90°和5°以上。
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公开(公告)号：US20060198052A1
公开(公告)日：2006-09-07
申请号：US11358293
申请日：2006-02-22
申请人： Yoshikazu Soeno , Kazuya Shimakawa
发明人： Yoshikazu Soeno , Kazuya Shimakawa
IPC分类号： G11B23/02
摘要： On a magnetic recording medium, a servo pattern is formed in a servo pattern region on at least one surface of a substrate by a concave/convex pattern including a convex part, at least protruding end part of which is formed of magnetic material, and a concave part. The servo pattern region includes an address pattern region and a burst pattern region, wherein the convex part is formed in the servo pattern region so that a larger of an inscribed circle with a largest diameter out of inscribed circles on an open surface of the concave part formed in the address pattern region and an inscribed circle with a largest diameter out of inscribed circles on an open surface of the concave part formed in the burst pattern region is an inscribed circle with a largest diameter out of inscribed circles on an open surface of the concave part formed in the servo pattern region.
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