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1. 发明授权

US08665541B2 Evaluation method of perpendicular magnetic recording medium and manufacturing method of perpendicular magnetic recording medium 失效
标题翻译：垂直磁记录介质的评估方法和垂直磁记录介质的制造方法
公开(公告)号：US08665541B2
公开(公告)日：2014-03-04
申请号：US13383160
申请日：2010-06-22
申请人： Chiyo Saito
发明人： Chiyo Saito
IPC分类号： G11B5/596
CPC分类号： G11B5/82 , G11B5/84 , G11B20/10398 , G11B20/182 , G11B2220/2516
摘要： A characteristic evaluation method of a perpendicular magnetic recording medium suitable for obtaining a perpendicular magnetic recording medium which can respond to much higher recording density is provided.This is an evaluation method of a perpendicular magnetic recording medium, including a process of recording a first signal of a specific frequency at an arbitrary first position in the perpendicular magnetic recording medium; a process of measuring a reproduction output of the first signal and of measuring a signal/noise ratio (initial value) of the first signal at a peak position where the reproduction output becomes the maximum; a process of recording a signal of a specific frequency at a second position away from the first position by a predetermined distance in the radial direction of the perpendicular magnetic recording medium; a process of measuring the signal/noise ratio of the first signal at the peak position again; a process of repeating the process of recording the signal of the specific frequency at a position brought close to the first position from the second position by a predetermined distance and of measuring the signal/noise ratio of the first signal at the peak position again while sequentially getting closer to the first position from the second position; and a process of determining whether the value of the signal/noise ratio has lowered from the initial value by a predetermined range or more.
摘要翻译：提供了适于获得可以响应高得多的记录密度的垂直磁记录介质的垂直磁记录介质的特征评估方法。这是垂直磁记录介质的评估方法，包括在垂直磁记录介质中的任意第一位置记录特定频率的第一信号的处理; 测量第一信号的再现输出并测量在再现输出变为最大的峰值位置处的第一信号的信号/噪声比（初始值）的处理; 在垂直磁记录介质的径向方向上离开第一位置的第二位置记录特定频率的信号预定距离的处理; 在峰值位置再次测量第一信号的信号/噪声比的处理; 重复将从特定频率的信号记录在距离第二位置靠近第一位置的位置预定距离的处理的过程，并且在顺序地再次测量峰值位置处的第一信号的信号/噪声比从第二个位置越来越接近第一个位置; 以及确定信号/噪声比的值是否已经从初始值降低预定范围或更大的过程。

2. 发明申请

US20120194936A1 EVALUATION METHOD OF PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF PERPENDICULAR MAGNETIC RECORDING MEDIUM 失效
标题翻译：全磁磁记录介质的评估方法和全磁记录介质的制造方法
公开(公告)号：US20120194936A1
公开(公告)日：2012-08-02
申请号：US13383160
申请日：2010-06-22
申请人： Chiyo Saito
发明人： Chiyo Saito
IPC分类号： G11B27/36
CPC分类号： G11B5/82 , G11B5/84 , G11B20/10398 , G11B20/182 , G11B2220/2516
摘要： A characteristic evaluation method of a perpendicular magnetic recording medium suitable for obtaining a perpendicular magnetic recording medium which can respond to much higher recording density is provided.This is an evaluation method of a perpendicular magnetic recording medium, including a process of recording a first signal of a specific frequency at an arbitrary first position in the perpendicular magnetic recording medium; a process of measuring a reproduction output of the first signal and of measuring a signal/noise ratio (initial value) of the first signal at a peak position where the reproduction output becomes the maximum; a process of recording a signal of a specific frequency at a second position away from the first position by a predetermined distance in the radial direction of the perpendicular magnetic recording medium; a process of measuring the signal/noise ratio of the first signal at the peak position again; a process of repeating the process of recording the signal of the specific frequency at a position brought close to the first position from the second position by a predetermined distance and of measuring the signal/noise ratio of the first signal at the peak position again while sequentially getting closer to the first position from the second position; and a process of determining whether the value of the signal/noise ratio has lowered from the initial value by a predetermined range or more.
摘要翻译：提供了适于获得可以响应高得多的记录密度的垂直磁记录介质的垂直磁记录介质的特征评估方法。这是垂直磁记录介质的评估方法，包括在垂直磁记录介质中的任意第一位置记录特定频率的第一信号的处理; 测量第一信号的再现输出并测量在再现输出变为最大的峰值位置处的第一信号的信号/噪声比（初始值）的处理; 在垂直磁记录介质的径向方向上离开第一位置的第二位置记录特定频率的信号预定距离的处理; 在峰值位置再次测量第一信号的信号/噪声比的处理; 重复将从特定频率的信号记录在距离第二位置靠近第一位置的位置预定距离的处理的过程，并且在顺序地再次测量峰值位置处的第一信号的信号/噪声比从第二个位置越来越接近第一个位置; 以及确定信号/噪声比的值是否已经从初始值降低预定范围或更大的过程。

3. 发明申请

US20110311841A1 MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME 有权
标题翻译：磁盘及其制造方法
公开(公告)号：US20110311841A1
公开(公告)日：2011-12-22
申请号：US13133124
申请日：2009-12-07
申请人： Chiyo Saito , Tokichiro Sato , Takenori Kajiwara
发明人： Chiyo Saito , Tokichiro Sato , Takenori Kajiwara
IPC分类号： G11B5/66 , B05D5/12 , C23C14/14 , G11B5/65
CPC分类号： G11B5/851 , G11B5/65 , G11B5/66 , G11B5/855
摘要： Provided are a magnetic disk comprising a granular magnetic recording layer which causes less noise even with a recording capacity thereof of 250 G or more bits per square inch; and a method for manufacturing the same. The magnetic disk according to the present invention comprises: a granular magnetic recording layer (20) which is formed on a disk substrate 10 directly or via an intermediate layer and which has non-magnetic regions between granular columnar particles; and an auxiliary recording layer (22) which is formed on the granular magnetic recording layer 20 and which causes exchange interaction among the granular columnar particles, wherein the auxiliary recording layer (22) contains 0.1 to 3 moles of oxygen.
摘要翻译：提供一种磁盘，其包括粒状磁记录层，即使其记录容量为每平方英寸250G或更多位，也会产生较小的噪声; 及其制造方法。根据本发明的磁盘包括：粒状磁记录层（20），其直接或经由中间层形成在盘基板10上，并且在颗粒状柱状颗粒之间具有非磁性区域; 和形成在颗粒状磁记录层20上并且引起颗粒状柱状颗粒之间的交换相互作用的辅助记录层（22），其中辅助记录层（22）含有0.1至3摩尔的氧。

4. 发明授权

US08877359B2 Magnetic disk and method for manufacturing same 有权
标题翻译：磁盘及其制造方法
公开(公告)号：US08877359B2
公开(公告)日：2014-11-04
申请号：US13133124
申请日：2009-12-07
申请人： Chiyo Saito , Tokichiro Sato , Takenori Kajiwara
发明人： Chiyo Saito , Tokichiro Sato , Takenori Kajiwara
IPC分类号： G11B5/65 , G11B5/66 , G11B5/855 , G11B5/851
CPC分类号： G11B5/851 , G11B5/65 , G11B5/66 , G11B5/855
摘要： Provided are a magnetic disk comprising a granular magnetic recording layer which causes less noise even with a recording capacity thereof of 250 G or more bits per square inch; and a method for manufacturing the same. The magnetic disk according to the present invention comprises: a granular magnetic recording layer (20) which is formed on a disk substrate 10 directly or via an intermediate layer and which has non-magnetic regions between granular columnar particles; and an auxiliary recording layer (22) which is formed on the granular magnetic recording layer 20 and which causes exchange interaction among the granular columnar particles, wherein the auxiliary recording layer (22) contains 0.1 to 3 moles of oxygen.
摘要翻译：提供一种磁盘，其包括粒状磁记录层，即使其记录容量为每平方英寸250G或更多位，也会产生较小的噪声; 及其制造方法。根据本发明的磁盘包括：粒状磁记录层（20），其直接或经由中间层形成在盘基板10上，并且在颗粒状柱状颗粒之间具有非磁性区域; 和形成在颗粒状磁记录层20上并且引起颗粒状柱状颗粒之间的交换相互作用的辅助记录层（22），其中辅助记录层（22）含有0.1至3摩尔的氧。

5. 发明授权

US08922936B2 Apparatus of single write magnetic disc 有权
标题翻译：单写磁盘装置
公开(公告)号：US08922936B2
公开(公告)日：2014-12-30
申请号：US13071132
申请日：2011-03-24
申请人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
发明人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
IPC分类号： G11B15/18 , G11B5/02 , G11B21/02 , G11B5/012 , G11B5/127 , G11B5/09
CPC分类号： G11B5/012 , G11B5/09 , G11B5/1278
摘要： An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system.In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a region including a target track and a portion of track adjacent thereto in an overlapping manner while position-shifting in a radial direction of the magnetic disk and a first writing frequency to a track on which information is last written is higher than a second writing frequency to another track.
摘要翻译：本发明的目的是进一步提高使用瓦片写入系统的磁盘装置中的记录密度。在包括磁盘的磁盘装置，在磁盘上写入信息的记录头以及控制记录头对磁盘的写入操作的控制器中，控制器控制写入操作使得记录头写入关于包括目标轨道和与其相邻的轨道的一部分的区域的信息，当在磁盘的径向方向上的位置移位和对最后写入信息的轨道的第一写入频率高于第二将频率写入另一个轨道。

6. 发明授权

US08559131B2 Perpendicular magnetic recording media and magnetic disc apparatus 有权
标题翻译：垂直磁记录介质和磁盘设备
公开(公告)号：US08559131B2
公开(公告)日：2013-10-15
申请号：US13161394
申请日：2011-06-15
申请人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
发明人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
IPC分类号： G11B5/127
CPC分类号： G11B5/667 , G11B5/012 , G11B2005/0021
摘要： [Problem] A perpendicular magnetic recording medium and a magnetic disk device that are suitable for a shingle recording type are provided.[Solution] The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium for a shingle recording type having a laminated film including a soft magnetic layer 13 and a main recording layer 16 formed on base 11, the soft magnetic layer 13 having a thickness found from a core width of a magnetic head for recording and reproduction with respect to the perpendicular magnetic recording medium and a track pitch narrower than the core width.
摘要翻译： [问题]提供了适用于瓦楞记录型的垂直磁记录介质和磁盘装置。 [解决方案]本发明的垂直磁记录介质是用于瓦片记录型的垂直磁记录介质，其具有包括形成在基底11上的软磁层13和主记录层16的层叠膜，软磁层13具有从用于记录和再现相对于垂直磁记录介质的磁头的磁芯宽度发现的厚度和比磁芯宽度窄的轨道间距。

7. 发明申请

US20120162808A1 Perpendicular magnetic recording media and magnetic disc apparatus 有权
标题翻译：垂直磁记录介质和磁盘设备
公开(公告)号：US20120162808A1
公开(公告)日：2012-06-28
申请号：US13161394
申请日：2011-06-15
申请人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
发明人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
IPC分类号： G11B5/09 , G11B5/82 , G11B21/02
CPC分类号： G11B5/667 , G11B5/012 , G11B2005/0021
摘要： [Problem] A perpendicular magnetic recording medium and a magnetic disk device that are suitable for a shingle recording type are provided.[Solution] The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium for a shingle recording type having a laminated film including a soft magnetic layer 13 and a main recording layer 16 formed on base 11, the soft magnetic layer 13 having a thickness found from a core width of a magnetic head for recording and reproduction with respect to the perpendicular magnetic recording medium and a track pitch narrower than the core width.
摘要翻译： [问题]提供了适用于瓦楞记录型的垂直磁记录介质和磁盘装置。 [解决方案]本发明的垂直磁记录介质是用于瓦片记录型的垂直磁记录介质，其具有包括形成在基底11上的软磁层13和主记录层16的层叠膜，软磁层13具有从用于记录和再现相对于垂直磁记录介质的磁头的磁芯宽度发现的厚度和比磁芯宽度窄的轨道间距。

8. 发明申请

US20120069466A1 APPARATUS OF MAGNETIC DISC 有权
标题翻译：磁盘设备
公开(公告)号：US20120069466A1
公开(公告)日：2012-03-22
申请号：US13071132
申请日：2011-03-24
申请人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
发明人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
IPC分类号： G11B5/55
CPC分类号： G11B5/012 , G11B5/09 , G11B5/1278
摘要： An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system.In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a region including a target track and a portion of track adjacent thereto in an overlapping manner while position-shifting in a radial direction of the magnetic disk and a first writing frequency to a track on which information is last written is higher than a second writing frequency to another track.
摘要翻译：本发明的目的是进一步提高使用瓦片写入系统的磁盘装置中的记录密度。在包括磁盘的磁盘装置，在磁盘上写入信息的记录头以及控制记录头对磁盘的写入操作的控制器中，控制器控制写入操作使得记录头写入关于包括目标轨道和与其相邻的轨道的一部分的区域的信息，当在磁盘的径向方向上的位置移位和对最后写入信息的轨道的第一写入频率高于第二将频率写入另一个轨道。

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