公开(公告)号：US08250736B2

公开(公告)日：2012-08-28

申请号：US12606723

申请日：2009-10-27

申请人： Masato Fukushima ,  Shinichi Ishibashi ,  Akira Yamane

发明人： Masato Fukushima ,  Shinichi Ishibashi ,  Akira Yamane

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/722 ,  B82Y10/00 ,  C23C14/165 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  Y10T29/49025 ,  Y10T29/4903 ,  Y10T29/49032

摘要： A magnetic recording medium which does not easily cause a material containing Fe or Co to corrode is disclosed. The method for manufacturing a magnetic recording medium 122 includes a process of forming a magnetic layer 30 on a non-magnetic substrate 10, a process of forming a recessed area 65 in the magnetic layer 30, a process of forming a corrosion-resistant film 60 to cover an exposure surface 65c of the recessed area 65, and a process of forming a magnetic recording pattern made of the magnetically separated magnetic layer 30 by forming a non-magnetic layer 40 to fill in the recessed area 65.

摘要翻译： 公开了不容易引起含有Fe或Co的材料腐蚀的磁记录介质。 磁记录介质122的制造方法包括在非磁性基板10上形成磁性层30的工序，在磁性层30中形成凹部65的工序，形成耐腐蚀膜60的工序 以覆盖凹陷区域65的曝光表面65c，以及通过形成非磁性层40以填充凹陷区域65来形成由磁分离的磁性层30制成的磁记录图案的过程。

公开(公告)号：US08139303B2

公开(公告)日：2012-03-20

申请号：US12441862

申请日：2007-09-11

申请人： Akira Sakawaki ,  Masato Fukushima

发明人： Akira Sakawaki ,  Masato Fukushima

IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/64 ,  B44C1/22 ,  B05D5/12

CPC分类号： G11B5/855

摘要： A method for the production of a magnetic recording medium includes the steps of forming a magnetic layer on a nonmagnetic substrate, injecting atoms into portions of the magnetic layer to cause the portions to be demagnetized or allowed to acquire amorphousness, thereby forming a magnetically separated magnetic recording pattern, the step of injecting atoms including the steps of applying to a surface of the formed magnetic layer an SOG film as a resist, partly removing or thinning the resist, and irradiating the surface with atoms, thereby partly injecting atoms into the magnetic layer through the portions of the magnetic layer from which the resist is removed or in which the resist is thinned.

摘要翻译： 一种制造磁记录介质的方法包括以下步骤：在非磁性基板上形成磁性层，将原子注入到磁性层的一部分中以使该部分退磁或获得非晶形状，从而形成磁分离的磁 记录图案，注入原子的步骤，包括以下步骤：将形成的磁性层的表面施加作为抗蚀剂的SOG膜，部分地除去或变薄抗蚀剂，并用原子照射表面，从而将原子部分地注入到磁性层 通过除去抗蚀剂的磁性层的部分或抗蚀剂变薄的部分。

公开(公告)号：US08120869B2

公开(公告)日：2012-02-21

申请号：US12863399

申请日：2009-01-16

申请人： Masato Fukushima

发明人： Masato Fukushima

IPC分类号： G11B5/09 ,  G11B21/02

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/59688 ,  G11B5/743 ,  G11B5/82

摘要： A magnetic recording medium having a magnetic pattern magnetically partitioning a magnetic layer, formed on a non-magnetic substrate, wherein the magnetic pattern is comprised of magnetic regions and non-magnetic regions surrounding each of the magnetic regions, the non-magnetic regions form depressions, the magnetic pattern comprises data areas and servo information areas, and the difference between the areal ratio of the depressions in the data areas and the areal ratio thereof in the servo information areas is within ±10%. The magnetic areas preferably comprise a magnetic layer having a granular structure comprised of magnetic grains each surrounded by an oxide, or a two-layer structure comprising the granular structure and a non-granular structure formed on the granular structure. The magnetic recording medium exhibits stable head-floating characteristics, and thus, the largest floating height can be reduced, and a high recording density can be obtained.

摘要翻译： 一种具有磁性分隔磁性层的磁性图案的磁记录介质，形成在非磁性基板上，其中磁性图案由围绕每个磁性区域的磁性区域和非磁性区域构成，非磁性区域形成凹陷 磁图包含数据区域和伺服信息区域，伺服信息区域中数据区域的凹陷的面积比和面积比之差在±10％以内。 磁性区域优选地包括具有由氧化物包围的磁性颗粒构成的颗粒结构的磁性层，或包含颗粒结构的二层结构和形成在颗粒结构上的非颗粒结构。 磁记录介质具有稳定的浮头特性，因此可以减小最大浮动高度，并且可以获得高记录密度。

公开(公告)号：US20110199700A1

公开(公告)日：2011-08-18

申请号：US12375497

申请日：2007-07-30

申请人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

发明人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

IPC分类号： G11B5/02 ,  B05D5/12

CPC分类号： G11B5/855

摘要： A process for producing a magnetic recording medium which can increase significantly yield and productivity is provided. Such a process for producing a magnetic recording medium includes a resist layer forming step which includes an immersing step of immersing a part of a non-magnetic substrate 31 in a resist solution 11 so that an inner circular domain 3 of an opening part is arranged above a liquid surface 11a of the resist solution 11 and a part of a data recording domain 4 is arranged under the liquid surface 11a of the resist solution 11, and a taking out step of taking the non-magnetic substrate 31 out from the resist solution 11, while rotating the non-magnetic substrate 31 immersed in the resist solution 11 around a rotation axis 37a extending in the direction of the thickness of the non-magnetic substrate 31 through the center of an opening part 37.

摘要翻译： 提供一种能够显着提高产量和生产率的磁记录介质的制造方法。 这种制造磁记录介质的方法包括抗蚀剂层形成步骤，其包括将非磁性基材31的一部分浸渍在抗蚀剂溶液11中的浸渍步骤，使得开口部分的内圆形区域3布置在 抗蚀剂溶液11的液面11a和数据记录区域4的一部分配置在抗蚀剂溶液11的液面11a的下方，从非抗蚀剂溶液11中取出非磁性基板31的取出工序 同时旋转浸没在抗蚀剂溶液11中的非磁性基板31绕着通过开口部分37的中心在非磁性基板31的厚度方向上延伸的旋转轴线37a。

公开(公告)号：US20110109992A1

公开(公告)日：2011-05-12

申请号：US12992831

申请日：2009-05-15

申请人： Masato Fukushima

发明人： Masato Fukushima

IPC分类号： C23C14/04 ,  G11B5/82 ,  G11B5/127

CPC分类号： C23C14/00 ,  G11B5/855

摘要： The present invention relates to a method for manufacturing a magnetic recording medium having magnetically separated magnetic recording patterns, such a magnetic recording medium, and a magnetic recording and reproducing apparatus.The manufacturing method of the present invention includes: forming a continuous recording layer on a nonmagnetic substrate; then forming, on the recording layer, a mask layer including at least one element selected from the element group of Pt, Ru, and Pd in such a manner that part of the recording layer is not masked; and then performing a magnetic characteristic modifying process including exposing the unmasked part of the surface of the recording layer to reactive plasma or reactive ions produced in the reactive plasma to amorphize the part of the recording layer and to modify the magnetic characteristics of the part, so that magnetically separated magnetic recording patterns are formed.

摘要翻译： 本发明涉及一种具有磁分离磁记录图案的磁记录介质的制造方法，例如磁记录介质和磁记录和重放装置。 本发明的制造方法包括：在非磁性基板上形成连续记录层; 然后在记录层上形成掩模层，该掩模层包括选自Pt，Ru和Pd的元素组中的至少一种元素，使得记录层的一部分不被掩蔽; 然后执行磁特性修改处理，包括将记录层表面的未掩模部分暴露于在反应等离子体中产生的反应性等离子体或反应离子以使记录层的一部分非晶化并改变该部件的磁特性，因此 形成磁分离的磁记录图案。

公开(公告)号：US20110056908A1

公开(公告)日：2011-03-10

申请号：US12991882

申请日：2009-05-12

申请人： Masato Fukushima ,  Akira Sakawaki ,  Tomoo Shige

发明人： Masato Fukushima ,  Akira Sakawaki ,  Tomoo Shige

IPC分类号： H01L21/308

CPC分类号： G11B5/851 ,  G11B5/855

摘要： There is provided a method for manufacturing a magnetic recording medium which manufactures media by employing the same in-line apparatus and which is capable of reducing the contamination due to the handling and of enhancing the productivity, the method for manufacturing a magnetic recording medium characterized by including, in the following order: a mounting step where a nonmagnetic substrate onto which at least a magnetic recording layer and a mask layer for patterning the magnetic recording layer have been laminated is mounted on a carrier; a reforming step where a portion of the magnetic recording layer which is not covered with the mask layer is subjected to a reactive plasma treatment or an ion irradiation treatment to reform the magnetic properties, thereby forming a magnetic recording pattern constituted of a remaining magnetic material; a removal step in which the mask layer is removed; a protective film forming step in which a protective film is formed on top of the magnetic recording layer; and a detaching step in which the nonmagnetic substrates are detached from the carrier, wherein any one or more steps among the reforming step, the removal step and the protective film forming step are continuously processed in a plurality of chambers.

摘要翻译： 提供一种制造磁记录介质的方法，该磁记录介质通过采用相同的在线装置制造介质，并且能够减少由于处理引起的污染和提高生产率，制造磁记录介质的方法，其特征在于 包括以下顺序：安装步骤，其中将至少磁记录层和用于图案化磁记录层的掩模层已经层压的非磁性基板安装在载体上; 将未被掩模层覆盖的磁记录层的一部分进行反应等离子体处理或离子照射处理以改善磁特性，从而形成由剩余的磁性材料构成的磁记录图案的重整步骤; 其中除去掩模层的去除步骤; 保护膜形成步骤，其中保护膜形成在磁记录层的顶部上; 以及其中非磁性基板与载体分离的分离步骤，其中重整步骤，去除步骤和保护膜形成步骤中的任何一个或多个步骤在多个室中连续处理。

公开(公告)号：US20110032635A1

公开(公告)日：2011-02-10

申请号：US12936146

申请日：2009-04-02

申请人： Masato Fukushima

发明人： Masato Fukushima

IPC分类号： G11B5/82 ,  G11B21/02 ,  H05H1/24 ,  B05D5/12

CPC分类号： G11B5/855 ,  G11B5/72

摘要： A magnetic recording medium of the present invention includes, on a substrate (1), at least a magnetic layer (2) and a carbon protective layer (9) that covers the magnetic layer (2), wherein a convex part (7) serving as a magnetic recording area, and a concave part (6) serving as a boundary area that separates the magnetic recording area are provided on the surface of the magnetic layer (2), and a barrier layer (8) containing mainly Cr or Ti is formed between the concave part (6) serving as the boundary area and the carbon protective layer (9).

摘要翻译： 本发明的磁记录介质在基板（1）上至少包括覆盖磁性层（2）的磁性层（2）和碳保护层（9），其中，服务于凸起部 作为磁记录区域，并且在磁性层（2）的表面上设置有用作分离磁记录区域的边界区域的凹部（6），主要包含Cr或Ti的阻挡层（8） 形成在作为边界区域的凹部（6）和碳保护层（9）之间。

公开(公告)号：US20110013311A1

公开(公告)日：2011-01-20

申请号：US12921095

申请日：2009-03-03

申请人： Masato Fukushima

发明人： Masato Fukushima

IPC分类号： G11B21/02 ,  G11B5/82 ,  G11B5/842 ,  G11B5/84

CPC分类号： G11B5/855 ,  G11B5/8408

摘要： A magnetic recording medium comprising a magnetic layer having a magnetic recording pattern comprising elevations constituting magnetic recording regions and depressions constituting boundary regions for partitioning the magnetic recording regions, and a continuous protective carbon overcoat on the magnetic layer, characterized in that portions of the carbon overcoat located on the magnetic recording regions-constituting elevations of the magnetic layer are thicker than portions of the carbon overcoat located on the boundary regions-constituting depressions of the magnetic layer. The protective carbon overcoat is formed by a CVD method. The boundary regions-constituting depressions are preferably subjected to exposure to plasma, and have modified magnetic characteristics. The magnetic recording regions exhibit high corrosion resistance and the magnetic recording medium has enhanced environmental resistance.

摘要翻译： 一种磁记录介质，包括磁记录图形，磁记录图形包括构成磁记录区的凸起和构成用于分隔磁记录区的边界区的凹陷，以及在磁性层上的连续的保护性碳外涂层，其特征在于， 位于构成磁性层的磁记录区域的磁性层的厚度比形成磁性层的凹部的边界区域上的碳外涂层的厚度大。 保护性碳外涂层通过CVD法形成。 构成边界区域的凹部优选经受等离子体曝光，并且具有改变的磁特性。 磁记录区表现出高耐腐蚀性，并且磁记录介质具有增强的耐环境性。

公开(公告)号：US20100271730A1

公开(公告)日：2010-10-28

申请号：US12745879

申请日：2008-11-28

申请人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

发明人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

IPC分类号： G11B21/02 ,  B05D5/12

CPC分类号： G11B5/855 ,  H01F41/34

摘要： A method for producing a magnetic recording medium having a magnetically partitioned magnetic recording pattern on a surface of a nonmagnetic substrate, which comprises the following steps. Step (A) of forming a magnetic layer on a non-magnetic substrate, step (B) of forming a carbon layer on the magnetic layer, step (C) of forming a resist layer on the carbon layer, step (D) of forming a negative pattern of magnetic recording pattern on the resist layer, step (E) of removing the portions of resist layer and carbon layer in regions corresponding to the negative pattern, step (F) of removing at least a surface layer portion of the magnetic layer in the regions corresponding to the negative pattern, and optional step (G) of removing the residual resist layer and carbon layer. The produced magnetic recording medium has a recording/reproducing property equal to or better than conventional ones and exhibits a high recording density.

摘要翻译： 一种在非磁性基板的表面上制造具有磁分割磁记录图案的磁记录介质的方法，包括以下步骤。 在非磁性基板上形成磁性层的步骤（A），在磁性层上形成碳层的步骤（B），在碳层上形成抗蚀剂层的步骤（C），形成步骤（D） 抗蚀剂层上的磁记录图案的负图案，在除去负图案的区域中去除抗蚀剂层和碳层的部分的步骤（E），步骤（F）至少去除磁性层的表层部分 在对应于负图案的区域中，以及去除残留抗蚀剂层和碳层的任选步骤（G）。 所制造的磁记录介质具有等于或优于常规磁记录介质的记录/再现性能并且具有高的记录密度。

公开(公告)号：US20100232056A1

公开(公告)日：2010-09-16

申请号：US12679463

申请日：2008-09-22

申请人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

发明人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

IPC分类号： G11B5/596 ,  G11B5/84

CPC分类号： G11B5/855

摘要： Provided is a process for manufacturing a magnetic recording medium having a magnetically partitioned magnetic recording patterns, which comprises the following steps, conducted in the order: (1) step of forming a magnetic layer on a non-magnetic substrate, (2) step of exposing the surface of regions of the magnetic layer to a reactive plasma or a reactive ion, which regions are to magnetically partition the magnetic layer for forming a magnetically partitioned magnetic recording pattern, and (3) step of exposing the magnetically partitioned magnetic layer to an inert gas irradiation. Preferably, a step of removing surface layer portions of said regions of the magnetic layer is carried out after the step (1) but before the step (2). The surface of the magnetic layer of produced magnetic recording medium exhibits good resistance to corrosion caused by oxidation or halogenation.

摘要翻译： 本发明提供一种制造磁记录介质的方法，该磁记录介质具有以下顺序进行的以下步骤：（1）在非磁性基板上形成磁性层的步骤，（2）步骤 将磁性层的区域的表面暴露于反应性等离子体或反应离子，这些区域磁性分配磁性层以形成磁性分隔的磁记录图案，以及（3）将磁分离的磁性层暴露于 惰性气体照射。 优选地，在步骤（1）之后但在步骤（2）之前执行去除磁性层的所述区域的表面层部分的步骤。 所制造的磁记录介质的磁性层的表面表现出良好的耐氧化或卤化腐蚀性。