公开(公告)号：US07727412B2

公开(公告)日：2010-06-01

申请号：US10542055

申请日：2004-06-11

申请人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mitsuru Takai

发明人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mitsuru Takai

IPC分类号： C23F1/00

CPC分类号： G11B5/855 ,  H01F41/34

摘要： A dry etching method and the like that can process a layer to be processed in a fine pattern to have a peripheral portion of an angular shape, are described. This dry etching method forms a step portion 21 along a peripheral portion of a first mask layer 20 that corresponds to an outline of an etching pattern in such a manner that the step portion 21 projects toward an opposite side to a magnetic thin layer 18 (layer to be processed).

摘要翻译： 对能够以精细图案进行处理的具有角形的周边部分的干法蚀刻方法等进行说明。 这种干蚀刻方法沿着第一掩模层20的周边部分形成台阶部分21，该边缘部分对应于蚀刻图案的轮廓，使得阶梯部分21朝向磁性薄层18的相反侧突出（层 待处理）。

公开(公告)号：US07423841B2

公开(公告)日：2008-09-09

申请号：US10891055

申请日：2004-07-15

申请人： Mitsuru Takai ,  Kazuhiro Hattori

发明人： Mitsuru Takai ,  Kazuhiro Hattori

IPC分类号： G11B5/82 ,  G11B21/21

CPC分类号： B82Y10/00 ,  G11B5/012 ,  G11B5/6082 ,  G11B5/743 ,  G11B5/82 ,  G11B2005/001

摘要： A magnetic recording medium capable of preventing contact with a magnetic head for use in recording or reproduction, during recording or reproducing of record data. The magnetic recording medium has a disk-shaped substrate having a surface formed with an annular data-recording area, an outer area outward of the data-recording area, and an inner area inward of the same. The annular data-recording area has a plurality of tracks separated from each other by concentric separating grooves. At least one of the outer area and the inner is subjected to lift-adjusting treatment for enabling adjustment of lifts applied to the magnetic head. This makes it possible to effectively prevent the magnetic head from being inclined to be brought into contact with the magnetic recording medium.

摘要翻译： 一种磁记录介质，能够在记录或再现记录数据期间防止与用于记录或再现的磁头的接触。 磁记录介质具有一个具有形成有环形数据记录区域，数据记录区域外部的外部区域和其内部的内部区域的盘形基板。 环形数据记录区域具有通过同心分隔槽彼此分离的多个轨迹。 对外部区域和内部中的至少一个进行升降调节处理，以便能够调节施加到磁头的电梯。 这使得可以有效地防止磁头倾斜于与磁记录介质接触。

公开(公告)号：US20070115586A1

公开(公告)日：2007-05-24

申请号：US10565125

申请日：2004-07-20

申请人： Mitsuru Takai ,  Kazuhiro Hattori

发明人： Mitsuru Takai ,  Kazuhiro Hattori

IPC分类号： G11B5/82

CPC分类号： B82Y10/00 ,  B82Y40/00 ,  G03F7/0002 ,  G11B5/855

摘要： There is provided a method of manufacturing a magnetic recording medium with improved manufacturing efficiency. A discrete track magnetic recording medium is manufactured as follows. A resist layer 58a is formed on a preform M in the form of a flat plate where a recording layer 55 is formed on a glass substrate 51 and a preform center of the preform M is specified. The stamper S is placed on the preform M with the specified preform center and the stamper center specified based on a stamper center specifying mark Sm formed on the stamper S aligned when viewed from the thickness direction of the preform M to transfer a concave/convex pattern of the stamper S to the resist layer 58a. The resist layer 58a to which the concave/convex pattern has been transferred is used to form concave parts in the recording layer 55 of the preform M.

摘要翻译： 提供了一种制造具有改进的制造效率的磁记录介质的方法。 如下制造离散轨道磁记录介质。 抗蚀剂层58a形成在平板形式的预成型体M上，其中在玻璃基板51上形成记录层55，并且指定了预制棒M的预制件中心。 将压模S放置在具有指定的预制棒中心的预成型体M上，并且当从预成型体M的厚度方向观察时，基于形成在压模S上的压模中心指定标记Sm指定的压模中心以将凹/凸图案 的压模S. 使用凹凸图案转印到其上的抗蚀剂层58a在预成型体M的记录层55中形成凹部。

公开(公告)号：US20070031705A1

公开(公告)日：2007-02-08

申请号：US10571481

申请日：2004-09-24

申请人： Kazuhiro Hattori ,  Mitsuru Takai

发明人： Kazuhiro Hattori ,  Mitsuru Takai

IPC分类号： G11B5/66 ,  B05D5/12

CPC分类号： G11B5/667 ,  G11B5/7325 ,  G11B5/84 ,  G11B5/851 ,  G11B5/855

摘要： A low cost magnetic recording medium having low surface roughness and a method for manufacturing the magnetic recording medium are provided. A soft magnetic layer 16 has a laminate structure including a first soft magnetic layer 26 on the substrate 12 side and a second soft magnetic layer 28 on the recording layer 20 side. The second soft magnetic layer 28 is formed such that the surface roughness of the surface 28A on the recording layer 20 side of the second soft magnetic layer 28 is less than the surface roughness of the base surface 12A of the substrate 12 and is less than the surface roughness of the surface 26A on the recording layer 20 side of the first soft magnetic layer 26.

摘要翻译： 提供具有低表面粗糙度的低成本磁记录介质和制造磁记录介质的方法。 软磁性层16具有在基板12侧具有第一软磁性体层26和记录层20侧的第二软磁性体层28的叠层结构。 第二软磁性层28形成为使得第二软磁性层28的记录层20侧的表面28A的表面粗糙度小于基板12的基面12A的表面粗糙度，并且更小 比第一软磁性层26的记录层20侧的表面26A的表面粗糙度高。

公开(公告)号：US20050161427A1

公开(公告)日：2005-07-28

申请号：US11038256

申请日：2005-01-21

申请人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mitsuru Takai

发明人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mitsuru Takai

IPC分类号： B08B1/04 ,  B08B3/08 ,  B08B3/12 ,  G11B5/012 ,  G11B5/84 ,  G11B5/855 ,  H01B13/00

CPC分类号： G11B5/855 ,  G11B5/012

摘要： A method of working a workpiece containing magnetic material and a method of manufacturing a magnetic recording medium capable of effectively manufacturing a magnetic recording medium and a magnetic recording and reproducing device, in that a workpiece containing magnetic material is worked by means of dry etching and washed in an alkaline solution, for example, the workpiece is subjected to scrubbing or ultrasonic washing.

摘要翻译： 一种加工含有磁性材料的工件的方法以及一种制造能够有效制造磁记录介质的磁记录介质和磁记录和再现装置的方法，其中含有磁性材料的工件通过干法蚀刻和洗涤 在碱性溶液中，例如，对工件进行擦洗或超声波清洗。

公开(公告)号：US07811077B2

公开(公告)日：2010-10-12

申请号：US11536846

申请日：2006-09-29

申请人： Kazuhiro Hattori ,  Kazuya Shimakawa

发明人： Kazuhiro Hattori ,  Kazuya Shimakawa

IPC分类号： B29C59/00 ,  B29D17/00

CPC分类号： B29C59/022 ,  B29C2059/023 ,  B29L2017/005 ,  G11B5/855 ,  G11B7/263 ,  Y10S425/81

摘要： There is provided a stamper on which stamper-side concave/convex patterns are formed and which is capable of manufacturing an information recording medium on which at least servo patterns are formed by concave/convex patterns. First convex parts that are continuously formed along a direction corresponding to a radial direction of the information recording medium are formed in the stamper-side concave/convex patterns. Each of the first convex parts is formed so that a height of a part of the first convex part from a reference plane, which is set between a front surface and a rear surface of the stamper, to protruding end of the first convex part increases as a length of the part of the first convex part in a direction corresponding to a circumferential direction of the information recording medium increases.

摘要翻译： 提供了一种压模，其上形成有压模侧凹凸图案，并且能够制造至少通过凹凸图案形成伺服图案的信息记录介质。 沿着与信息记录介质的径向对应的方向连续形成的第一凸部形成在压模侧凹凸图案中。 每个第一凸部形成为使得第一凸部的从设置在压模的前表面和后表面之间的参考平面的一部分的高度到第一凸部的突出端的高度随着 第一凸部的与信息记录介质的圆周方向对应的方向的一部分的长度增加。

公开(公告)号：US07526925B2

公开(公告)日：2009-05-05

申请号：US11499147

申请日：2006-08-04

申请人： Akito Machida ,  Kazuhiro Hattori ,  Kouichi Matsuo

发明人： Akito Machida ,  Kazuhiro Hattori ,  Kouichi Matsuo

IPC分类号： F25J1/00 ,  F17C5/00

CPC分类号： B01B1/005 ,  B01D3/06 ,  C01B21/00 ,  C01P2006/22

摘要： A method for producing slush nitrogen comprises the steps of: spraying liquid nitrogen from a nozzle into a vessel kept under a reduced pressure with a nozzle diameter and a spraying pressure being so adjusted as for the liquid nitrogen to maintain the form of droplets, to thereby form liquid nitrogen fine particles having a uniform particle diameter and disperse said particles in the vessel; vaporizing nitrogen from the droplet particles during the stay thereof in the space of the vessel, to solidify liquid nitrogen particles by vaporization latent heat and form fine solid nitrogen particles having a uniform particle diameter; and mixing the solid nitrogen particles with liquid nitrogen.

摘要翻译： 一种生产搪氮的方法包括以下步骤：将喷嘴中的液氮喷射到保持在减压下的容器中，喷嘴直径和喷射压力被调节以保持液氮的形式，由此 形成具有均匀粒径的液氮微粒并将所述颗粒分散在容器中; 在容器的空间中从液滴粒子蒸发氮气，通过蒸发潜热固化液氮颗粒，形成具有均匀粒径的微细固体氮颗粒; 并将固体氮颗粒与液氮混合。

公开(公告)号：US07247251B2

公开(公告)日：2007-07-24

申请号：US11050769

申请日：2005-02-07

申请人： Kazuhiro Hattori ,  Shuichi Okawa ,  Takahiro Suwa ,  Mikiharu Hibi

发明人： Kazuhiro Hattori ,  Shuichi Okawa ,  Takahiro Suwa ,  Mikiharu Hibi

IPC分类号： H01F1/00

CPC分类号： G11B5/855 ,  H01F41/32

摘要： A method for manufacturing a magnetic recording medium is provided, which can efficiently manufacture a magnetic recording medium that includes a recording layer formed in a concavo-convex pattern, has a sufficiently flat surface, and provides good recording and reproduction precision. The method includes: a non-magnetic material filling step of depositing a non-magnetic material over a recording layer formed in a predetermined concavo-convex pattern over a substrate, thereby filling a concave portion of the concavo-convex pattern with the non-magnetic material; and a flattening step of removing the excess part of the non-magnetic material above the recording layer by ion beam etching to flatten the surfaces of the non-magnetic layer and the recording layer.

摘要翻译： 提供了一种用于制造磁记录介质的方法，其可以有效地制造包括以凹凸图案形成的记录层的磁记录介质，具有足够平坦的表面，并且提供良好的记录和再现精度。 该方法包括：非磁性材料填充步骤，将非磁性材料沉积在基板上以预定的凹凸图案形成的记录层上，从而用非磁性填充凹凸图案的凹部 材料; 以及通过离子束蚀刻去除记录层上方的非磁性材料的剩余部分的平坦化步骤，以使非磁性层和记录层的表面变平。

公开(公告)号：US20060292400A1

公开(公告)日：2006-12-28

申请号：US11472419

申请日：2006-06-22

申请人： Takahiro Suwa ,  Kazuhiro Hattori ,  Shuichi Okawa

发明人： Takahiro Suwa ,  Kazuhiro Hattori ,  Shuichi Okawa

IPC分类号： G11B5/64 ,  G11B5/65

CPC分类号： G11B5/855

摘要： A magnetic recording medium that includes a recording layer formed in a predetermined concavo-convex pattern in which recording elements are formed as convex portions, has high areal density, cannot cause crash of a magnetic head easily, and has high reliability, and a magnetic recording and reproducing apparatus including that magnetic recording medium are provided. The magnetic recording medium includes: the recording elements formed as the convex portions of the recording layer formed in a predetermined concavo-convex pattern over a substrate; and a filling material with which a concave portion between the recording elements is filled. The surface roughness of a portion of a surface of the medium above the filling material is larger than that of portions of the surface above the recording elements.

摘要翻译： 包括以预定的凹凸图案形成的记录层的磁记录介质，其中记录元件形成为凸部，具有高的面密度，不容易使磁头发生碰撞，并且具有高可靠性，并且磁记录 并且提供包括该磁记录介质的再现装置。 磁记录介质包括：记录元件，形成为在衬底上以预定的凹凸图案形成的记录层的凸部; 以及填充有记录元件之间的凹部的填充材料。 在填充材料之上的介质的表面的一部分的表面粗糙度大于记录元件上方表面的部分的表面粗糙度。

公开(公告)号：US20060098343A1

公开(公告)日：2006-05-11

申请号：US11220542

申请日：2005-09-08

申请人： Kazuhiro Hattori ,  Kazuya Shimakawa

发明人： Kazuhiro Hattori ,  Kazuya Shimakawa

IPC分类号： G11B5/82

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/667 ,  G11B5/732 ,  G11B5/7325 ,  G11B5/743 ,  G11B5/855

摘要： A magnetic recording medium is provided, which includes a recording layer formed in a concavo-convex pattern to achieve high areal density and can ensure good recording and reproduction characteristics so as to provide high reliability. The magnetic recording medium has a substrate and a recording layer formed in the predetermined concavo-convex pattern over the substrate. The recording layer has a non-recording element and recording elements. The non-recording element is formed as convex portion of the concavo-convex pattern at an outer circumferential end and/or an inner circumferential end. The recording elements are formed as convex portions of the concavo-convex pattern in a region other than a region where the non-recording element is arranged. The magnetic recording medium further has a non-magnetic material with which concave portions of the concavo-convex pattern are filled and which covers the non-recording element, and a protective layer formed over the recording layer and the non-magnetic material.

摘要翻译： 提供了一种磁记录介质，其包括形成为凹凸图案的记录层以实现高面密度并且可以确保良好的记录和再现特性，从而提供高可靠性。 磁记录介质具有在衬底上形成为预定凹凸图案的衬底和记录层。 记录层具有非记录元件和记录元件。 非记录元件在外周端和/或内周端形成凹凸图案的凸部。 记录元件在非记录元件布置的区域以外的区域中形成为凹凸图案的凸部。 磁记录介质还具有非磁性材料，凹凸图案的凹部被填充并覆盖非记录元件，以及形成在记录层和非磁性材料上的保护层。