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1. 发明授权

US08298691B2 Magnetic recording medium and magnetic recording and reproducing apparatus 失效
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：US08298691B2
公开(公告)日：2012-10-30
申请号：US12659407
申请日：2010-03-08
申请人： Yoshinori Uchiyama , Takahiro Suwa , Narutoshi Fukuzawa , Kazuya Shimakawa
发明人： Yoshinori Uchiyama , Takahiro Suwa , Narutoshi Fukuzawa , Kazuya Shimakawa
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/82 , G11B5/865 , Y10T428/1171
摘要： A magnetic recording medium is provided in which recording elements and concave portions have a clear difference in terms of magnetism at the boundaries therebetween, and which has favorable production efficiency. The magnetic recording medium includes a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. A center part of a bottom surface of the concave portion protrudes from edge parts of the bottom surface of the concave portion in a direction away from the substrate.
摘要翻译：提供一种磁记录介质，其中记录元件和凹部在它们之间的边界处的磁性方面具有明显的差异，并且具有良好的生产效率。磁记录介质包括基板; 在基板上形成为预定的凹凸图案的记录层，作为记录元件的凹凸图案的凸部; 以及填充部分填充记录元件之间的凹部。凹部的底面的中心部从远离基板的方向从凹部的底面的边缘部突出。

2. 发明申请

US20100239888A1 Magnetic recording medium and magnetic recording and reproducing apparatus 失效
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：US20100239888A1
公开(公告)日：2010-09-23
申请号：US12659407
申请日：2010-03-08
申请人： Yoshinori Uchiyama , Takahiro Suwa , Narutoshi Fukuzawa , Kazuya Shimakawa
发明人： Yoshinori Uchiyama , Takahiro Suwa , Narutoshi Fukuzawa , Kazuya Shimakawa
IPC分类号： G11B5/33
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/82 , G11B5/865 , Y10T428/1171
摘要： A magnetic recording medium is provided in which recording elements and concave portions have a clear difference in terms of magnetism at the boundaries therebetween, and which has favorable production efficiency. The magnetic recording medium includes a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. A center part of a bottom surface of the concave portion protrudes from edge parts of the bottom surface of the concave portion in a direction away from the substrate.
摘要翻译：提供一种磁记录介质，其中记录元件和凹部在它们之间的边界处的磁性方面具有明显的差异，并且具有良好的生产效率。磁记录介质包括基板; 在基板上形成为预定的凹凸图案的记录层，作为记录元件的凹凸图案的凸部; 以及填充部分填充记录元件之间的凹部。凹部的底面的中心部从远离基板的方向从凹部的底面的边缘部突出。

3. 发明申请

US20110024388A1 METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM 审中-公开
标题翻译：制造磁记录介质的方法
公开(公告)号：US20110024388A1
公开(公告)日：2011-02-03
申请号：US12842502
申请日：2010-07-23
申请人： Takahiro SUWA , Narutoshi Fukuzawa , Shuichi Okawa , Yoshinori Uchiyama
发明人： Takahiro SUWA , Narutoshi Fukuzawa , Shuichi Okawa , Yoshinori Uchiyama
IPC分类号： G11B5/84
CPC分类号： G11B5/855
摘要： A method for manufacturing a magnetic recording medium is provided which can sufficiently reduce variations in surface roughness even in the simultaneous presence of a region of a relatively wide concave and convex portion and a region of a relatively narrow concave and convex portion in the recording layer. The method includes the steps of etching a recording layer based on a (first) mask layer to process it in a concavo-convex pattern, and depositing a filler over the recording layer and the mask layer to fill a concave portion with the filler. In between those steps, provided is the step of removing part of the first mask layer over a recording element (a convex portion of the recording layer) by dry etching in which an etching rate for the mask layer is higher than that for the recording layer so that the mask layer remains over the recording element.
摘要翻译：提供了一种用于制造磁记录介质的方法，即使在相对较宽的凹凸部分的区域和记录层中相对窄的凹凸部分的区域同时存在的情况下，也可以充分减小表面粗糙度的变化。该方法包括以下步骤：基于（第一）掩模层蚀刻记录层，以凹凸图案处理该记录层;以及在记录层和掩模层上沉积填料以填充填料的凹部。在这些步骤之间，提供了通过干蚀刻在记录元件（记录层的凸部）上去除部分第一掩模层的步骤，其中掩模层的蚀刻速率高于记录层的蚀刻速率使得掩模层保留在记录元件上。

4. 发明申请

US20080237938A1 Method for manufacturing information recording medium, method of transferring concavo-convex pattern, and transfer apparatus 审中-公开
标题翻译：信息记录介质的制造方法，凹凸图案的传送方法以及传送装置
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。

5. 发明申请

US20090310255A1 Magnetic recording medium and magnetic recording and reproducing apparatus 失效
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：US20090310255A1
公开(公告)日：2009-12-17
申请号：US12457194
申请日：2009-06-03
申请人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
发明人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
IPC分类号： G11B5/127
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A highly reliable magnetic recording medium is provided which has a recording layer formed in a concavo-convex pattern and wherein the recording layer is unlikely to cause a change in magnetic properties. The magnetic recording medium includes a substrate, a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. The filler portion comprises a metal-based main filler material and oxygen. Oxygen is unevenly distributed in the filler portion so that the ratio of the number of oxygen atoms to the total of the number of atoms of the main filler material and the number of oxygen atoms is greater in an upper surface portion of the filler portion than in a lower portion of the filler portion.
摘要翻译：提供了一种高度可靠的磁记录介质，其具有形成为凹凸图案的记录层，并且其中记录层不太可能导致磁性变化。磁记录介质包括基板，在基板上形成为预定的凹凸图案的记录层，作为记录元件的凹凸图案的凸部; 以及填充部分填充记录元件之间的凹部。填料部分包括金属基填料和氧气。氧气在填料部分中不均匀分布，使得填料部分的上表面部分中的氧原子数与主填料材料的原子数和氧原子数的总和的比例大于在填充部分的下部。

6. 发明申请

US20090242508A1 Method for manufacturing magnetic recording medium 审中-公开
标题翻译：磁记录介质的制造方法
公开(公告)号：US20090242508A1
公开(公告)日：2009-10-01
申请号：US12382653
申请日：2009-03-20
申请人： Kazuhiro Hattori , Shuichi Okawa , Narutoshi Fukuzawa , Takahiro Suwa
发明人： Kazuhiro Hattori , Shuichi Okawa , Narutoshi Fukuzawa , Takahiro Suwa
IPC分类号： B44C1/22
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743
摘要： A filling material different from a first mask layer (temporary coating material) is deposited over a workpiece to fill concave portions. At least part of excess portions of the filling material is removed by a dry etching method such that at least part of the side surfaces of the first mask layer over recording elements are exposed. Then, the first mask layer is removed by a dry etching method which uses a reactive gas having the property of chemically reacting with and removing both the filling material and the first mask layer as a processing gas and in which an etching rate for the first mask layer is higher than that for the filling material, and the etching rate for the filling material is higher than that for a recording layer (a lower layer that is in contact with a lower surface of the first mask layer over recording elements).
摘要翻译：不同于第一掩模层（临时涂层材料）的填充材料沉积在工件上以填充凹部。通过干蚀刻方法去除填充材料的多余部分的至少一部分，使得第一掩模层的超过记录元件的侧表面的至少一部分被暴露。然后，通过干式蚀刻法除去第一掩模层，该干蚀刻方法使用具有与填充材料和第一掩模层化学反应的特性的反应气体作为处理气体，并且其中第一掩模的蚀刻速率层高于填充材料的蚀刻速率，并且对于记录层（与记录元件上的第一掩模层的下表面接触的下层）的填充材料的蚀刻速率高。

7. 发明授权

US08124255B2 Magnetic recording medium and magnetic recording and reproducing apparatus 失效
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：US08124255B2
公开(公告)日：2012-02-28
申请号：US12457194
申请日：2009-06-03
申请人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
发明人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
IPC分类号： G11B5/65
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A highly reliable magnetic recording medium is provided which has a recording layer formed in a concavo-convex pattern and wherein the recording layer is unlikely to cause a change in magnetic properties. The magnetic recording medium includes a substrate, a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. The filler portion comprises a metal-based main filler material and oxygen. Oxygen is unevenly distributed in the filler portion so that the ratio of the number of oxygen atoms to the total of the number of atoms of the main filler material and the number of oxygen atoms is greater in an upper surface portion of the filler portion than in a lower portion of the filler portion.
摘要翻译：提供了一种高度可靠的磁记录介质，其具有形成为凹凸图案的记录层，并且其中记录层不太可能导致磁性变化。磁记录介质包括基板，在基板上形成为预定的凹凸图案的记录层，作为记录元件的凹凸图案的凸部; 以及填充部分填充记录元件之间的凹部。填料部分包括金属基填料和氧气。氧气不均匀地分布在填料部分中，使得填料部分的上表面部分中的氧原子数与主填料材料的原子数和氧原子数的总和的比例大于在填充部分的下部。

8. 发明申请

US20100195237A1 MAGNETIC RECORDING MEDIUM, RECORDING/REPRODUCING APPARATUS, AND STAMPER 审中-公开
标题翻译：磁记录介质，记录/再现设备和印章
公开(公告)号：US20100195237A1
公开(公告)日：2010-08-05
申请号：US12698228
申请日：2010-02-02
申请人： Takahiro Suwa , Narutoshi Fukuzawa
发明人： Takahiro Suwa , Narutoshi Fukuzawa
IPC分类号： G11B5/09 , G11B17/00
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59655 , G11B5/743 , G11B5/746 , G11B5/855 , G11B5/865
摘要： A magnetic recording medium has data track patterns formed by concave/convex patterns in data recording regions on at least one surface of a substrate and servo patterns formed by concave/convex patterns in servo pattern regions between the data recording regions. The concave/convex patterns include convexes, at least protruding end portions of which are formed of magnetic material, and concaves. A burst pattern region of each servo pattern region includes N (where N is at least two) burst regions, in which burst patterns, where plural burst signal unitary parts are aligned along a direction of rotation, are formed as the servo patterns. The burst signal unitary parts formed in M (where M is no greater than (N−1)) out of the N burst regions are concaves, and the burst signal unitary parts formed in L (where L is equal to (N−M)) out of the N burst regions are convexes.
摘要翻译：磁记录介质具有在基板的至少一个表面上的数据记录区域中由凹/凸图案形成的数据轨道图案，以及在数据记录区域之间的伺服图案区域中由凹/凸图案形成的伺服图案。凹凸图案包括至少凸出的端部由磁性材料形成的凸起和凹部。每个伺服模式区域的脉冲串模式区域包括N（其中N是至少两个）脉冲串区域，其中多个脉冲信号单位部分沿着旋转方向排列的脉冲串模式被形成为伺服模式。在N个突发区域中，在M（其中M不大于（N-1））形成的突发信号单位部分是凹陷，并且形成在L中的突发信号单位部分（其中L等于（N-M））在N个突发区域中是凸的。

9. 发明申请

US20090101624A1 Method for manufacturing magnetic recording medium 审中-公开
标题翻译：磁记录介质的制造方法
公开(公告)号：US20090101624A1
公开(公告)日：2009-04-23
申请号：US12285935
申请日：2008-10-16
申请人： Takahiro Suwa , Narutoshi Fukuzawa , Kazuhiro Hattori , Shuichi Okawa
发明人： Takahiro Suwa , Narutoshi Fukuzawa , Kazuhiro Hattori , Shuichi Okawa
IPC分类号： B44C1/22
CPC分类号： G11B5/855
摘要： A method for efficiently manufacturing a magnetic recording medium by filling concave portions of a concavo-convex patterned recording layer with a filler to provide sufficient surface flatness is provided. A cladding is etched by a dry etching method in which an etch rate of the cladding is equal to or higher than an etch rate of the filler. Then, by dry etching method in which an etch rate of the filler is higher than that of the cladding, the filler is etched so that a top surface of a diaphragm over a recording element (or a top surface of the recording element in absence of the diaphragm) is exposed, and the cladding remains over the concave portion of the concavo-convex pattern of the recording layer.
摘要翻译：提供一种通过用填充物填充凹凸图案记录层的凹部来有效地制造磁记录介质以提供足够的表面平坦度的方法。通过干蚀刻方法蚀刻包层，其中包层的蚀刻速率等于或高于填料的蚀刻速率。然后，通过干式蚀刻方法，其中填料的蚀刻速率高于包层的蚀刻速率，对填料进行蚀刻，使得隔膜的上表面在记录元件上（或记录元件的顶表面上，隔膜）暴露，并且包层保留在记录层的凹凸图案的凹部上。

10. 发明申请

US20090168244A1 Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium 审中-公开
标题翻译：磁记录介质，磁记录和再现装置以及磁记录介质的制造方法
公开(公告)号：US20090168244A1
公开(公告)日：2009-07-02
申请号：US12314996
申请日：2008-12-19
申请人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
发明人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
IPC分类号： G11B5/82 , B05D5/12 , B44C1/22
CPC分类号： G11B5/82 , G11B5/855
摘要： The magnetic recording medium includes: a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, the concavo-convex pattern including a convex portion that serves as a recording element; and a filling portion that fills a concave portion between the recording elements. The filling portion comprises a metal-based main filling material and nitrogen. Nitrogen is unevenly distributed in the filling portion such that the ratio of the number of nitrogen atoms to the total number of atoms of the main filling material and nitrogen atoms is greater in the upper surface portion of the filling portion than in the lower portion thereof.
摘要翻译：磁记录介质包括：基板; 在基板上形成为预定的凹凸图案的记录层，所述凹凸图案包括用作记录元件的凸部; 以及填充部分，其填充记录元件之间的凹部。填充部分包括基于金属的主填充材料和氮气。氮在填充部分中不均匀地分布，使得填充部分的上表面部分中的氮原子数与主填充材料和氮原子的总原子数之比大于其下部。

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