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1. 发明申请

US20100081013A1 MAGNETIC DISK SUBSTRATE AND MAGNETIC DISK 审中-公开
标题翻译：磁盘基片和磁盘
公开(公告)号：US20100081013A1
公开(公告)日：2010-04-01
申请号：US12566288
申请日：2009-09-24
申请人： Kenichi NISHIMORI , Tadashi TOMONAGA
发明人： Kenichi NISHIMORI , Tadashi TOMONAGA
IPC分类号： G11B5/706
CPC分类号： G11B5/7315 , G11B5/82
摘要： In a magnetic disk substrate being annular and having a first and a second main surface, (1) surface roughness measured by an atomic force microscope having a resolution of 256×256 pixels per 2 μm square and/or (2) the number of foreign substances detected to have sizes of 0.1 μm or more and 1.0 μm or less upon detection of scattered light from the magnetic disk substrate when laser light with a wavelength of 405 nm is irradiated with a spot size of 5 μm at a laser power of 25 mW differ/differs between the first and the second main surfaces. Only the first main surface has a surface quality usable as a magnetic recording surface. The number of the foreign substances detected to have the sizes of 0.1 μm or more and 1.0 μm or less upon detection of the scattered light from the magnetic disk substrate when the laser light with the wavelength of 405 nm is irradiated with the spot size of 5 μm at the laser power of 25 mW is 400 or less per 30 cm2 on the second main surface.
摘要翻译：在环形且具有第一和第二主表面的磁盘基片中，（1）由原子力显微镜测得的表面粗糙度分辨率为每平方米256×256像素和/或（2）外来数量在激光功率为25mW的情况下用波长为405nm的激光照射5μm的激光时，检测出具有0.1μm以上且1.0μm以下的尺寸的物质，当检测到来自磁盘基板的散射光时，在第一和第二主表面之间不同/不同。只有第一主表面具有可用作磁记录表面的表面质量。当检测到波长为405nm的激光的光斑尺寸为5时，检测到来自磁盘基板的散射光的检测到的尺寸为0.1μm以上且1.0μm以下的异物的数量在25mW的激光功率下的μm在第二主表面上的每30cm 2是400或更小。

2. 发明授权

US08895165B2 Method of manufacturing a glass substrate for a magnetic disk, glass substrate for a magnetic disk, method of manufacturing a magnetic disk, and magnetic disk 有权
标题翻译：制造磁盘用玻璃基板的方法，磁盘用玻璃基板，磁盘的制造方法以及磁盘
公开(公告)号：US08895165B2
公开(公告)日：2014-11-25
申请号：US13063106
申请日：2009-09-02
申请人： Kenichi Nishimori , Tadashi Tomonaga
发明人： Kenichi Nishimori , Tadashi Tomonaga
IPC分类号： G11B5/73 , G11B5/82 , B05B5/12 , G11B5/84
CPC分类号： G11B5/8404 , G11B5/7315 , G11B2220/23
摘要： Provided is a method of manufacturing a magnetic disk glass substrate, wherein, in a main surface polishing process, main surface polishing is applied to one of main surfaces of a glass substrate so that the one main surface has a predetermined arithmetic mean roughness, and main surface polishing is applied to the other main surface of the glass substrate so that the other main surface has a roughness which is higher than the arithmetic mean roughness (Ra) of the one main surface and which is low enough to prevent a component forming the magnetic disk glass substrate from being eluted from the other main surface.
摘要翻译：提供一种制造磁盘玻璃基板的方法，其中在主表面抛光工艺中，将主表面抛光施加到玻璃基板的一个主表面，使得一个主表面具有预定的算术平均粗糙度，并且主表面抛光被施加到玻璃基板的另一个主表面，使得另一个主表面具有比一个主表面的算术平均粗糙度（Ra）高的粗糙度，并且其低到足以防止形成磁体的部件磁盘玻璃基板从另一个主表面洗脱。

3. 发明授权

US08605388B2 Magnetic recording medium with guard layer between auxiliary and magnetic recording layers and manufacturing method of the magnetic recording medium 有权
标题翻译：辅助磁记录层之间具有保护层的磁记录介质和磁记录介质的制造方法
公开(公告)号：US08605388B2
公开(公告)日：2013-12-10
申请号：US12745206
申请日：2009-03-09
申请人： Junichi Yasumori , Yoshiaki Sonobe , Tadashi Tomonaga
发明人： Junichi Yasumori , Yoshiaki Sonobe , Tadashi Tomonaga
IPC分类号： G11B5/82
CPC分类号： G11B5/855 , G11B5/66
摘要： It is an object to manufacture magnetic recording media with the high recording density. Since nonmagnetic portions (8) with a predetermined pattern are formed in a recording auxiliary layer (4) formed on a magnetic recording layer (3), it is possible to actualize a magnetic recording medium where magnetic portions (7) and the magnetic recording layer (3) immediately below the portions (7) are recording units. The nonmagnetic portions (8) are formed by non-magnetization using ion implantation, and it is thereby possible to manufacture magnetic recording media with the high recording density.
摘要翻译：本发明的目的是制造具有高记录密度的磁记录介质。由于在形成在磁记录层（3）上的记录辅助层（4）中形成具有预定图案的非磁性部分（8），因此可以实现磁记录介质，其中磁性部分（7）和磁记录层（3）的正下方是记录单元。非磁性部分（8）通过使用离子注入的非磁化形成，从而可以制造具有高记录密度的磁记录介质。

4. 发明申请

US20110165439A1 METHOD OF MANUFACTURING A GLASS SUBSTRATE FOR A MAGNETIC DISK, GLASS SUBSTRATE FOR A MAGNETIC DISK, METHOD OF MANUFACTURING A MAGNETIC DISK, AND MAGNETIC DISK 有权
标题翻译：制造用于磁盘的玻璃基板，用于磁盘的玻璃基板，制造磁性磁盘的方法和磁性磁盘
公开(公告)号：US20110165439A1
公开(公告)日：2011-07-07
申请号：US13063106
申请日：2009-09-02
申请人： Kenichi Nishimori , Tadashi Tomonaga
发明人： Kenichi Nishimori , Tadashi Tomonaga
IPC分类号： G11B5/73 , B05D5/12 , G11B5/82 , B24B1/00
CPC分类号： G11B5/8404 , G11B5/7315 , G11B2220/23
摘要： Provided is a method of manufacturing a magnetic disk glass substrate, wherein, in a main surface polishing process, main surface polishing is applied to one of main surfaces of a glass substrate so that the one main surface has a predetermined arithmetic mean roughness, and main surface polishing is applied to the other main surface of the glass substrate so that the other main surface has a roughness which is higher than the arithmetic mean roughness (Ra) of the one main surface and which is low enough to prevent a component forming the magnetic disk glass substrate from being eluted from the other main surface.
摘要翻译：提供一种制造磁盘玻璃基板的方法，其中在主表面抛光工艺中，将主表面抛光施加到玻璃基板的一个主表面，使得一个主表面具有预定的算术平均粗糙度，并且主表面抛光被施加到玻璃基板的另一个主表面，使得另一个主表面具有比一个主表面的算术平均粗糙度（Ra）高的粗糙度，并且其低到足以防止形成磁体的部件磁盘玻璃基板从另一个主表面洗脱。

5. 发明申请

US20100024484A1 METHOD OF MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK AND SYSTEM FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK 有权
标题翻译：制造用于磁盘的玻璃基板的制造方法和用于制造用于磁盘的玻璃基板的系统
公开(公告)号：US20100024484A1
公开(公告)日：2010-02-04
申请号：US12525251
申请日：2008-01-24
申请人： Ryuuichi Kashima , Hideki Isono , Shinji Eda , Tomotaka Yokoyama , Tadashi Tomonaga , Kraisorn Phandon , Weeraphan Yayod
发明人： Ryuuichi Kashima , Hideki Isono , Shinji Eda , Tomotaka Yokoyama , Tadashi Tomonaga , Kraisorn Phandon , Weeraphan Yayod
IPC分类号： C03C21/00
CPC分类号： B24B9/08 , C03C21/002 , G11B5/8404
摘要： To provide a magnetic-disk glass substrate manufacturing method that can reduce the inner diameter dimensional error.A magnetic-disk glass substrate manufacturing method of this invention including a chemical strengthening step of bringing a plurality of glass substrates 102 into contact with chemical strengthening treatment solutions of a plurality of chemical strengthening treatment baths 130, respectively, to chemically strengthen the glass substrates further includes an inner diameter measuring step of measuring the inner diameter of each of the glass substrates 102 before the chemical strengthening step, a grasping step of grasping a variation of the inner diameter of the glass substrate 102 to be generated by the chemical strengthening step for each of the chemical strengthening treatment baths 130, and a combination determining step of determining the chemical strengthening treatment baths 130, that perform chemical strengthening, based on the variations so that the inner diameters of the glass substrates, whose inner diameters are measured, after the chemical strengthening step become a desired value. In the chemical strengthening step, the glass substrates 102 are chemically strengthened in the determined chemical strengthening treatment baths 130, respectively.
摘要翻译：提供可以减小内径尺寸误差的磁盘玻璃基板的制造方法。本发明的磁盘玻璃基板的制造方法包括使多个玻璃基板102分别与多个化学强化处理槽130的化学强化处理液接触的化学强化工序，以进一步化学强化玻璃基板包括在化学强化步骤之前测量每个玻璃基板102的内径的内径测量步骤，抓取步骤，通过每个步骤获取通过化学强化步骤产生的玻璃基板102的内径的变化化学强化处理槽130的化学强化处理槽130的化学强化处理槽130的化学强化处理槽130的组合判定步骤，基于这些变化，进行化学强化的化学强化处理槽130，使得测定内径的玻璃基板的内径在化学品加强步骤成为一个希望 ed值。在化学强化步骤中，分别在确定的化学强化处理槽130中对玻璃基板102进行化学强化。

6. 发明申请

US20080180844A1 MAGNETIC DISK MANUFACTURING SUPPORT METHOD AND MAGNETIC DISK MANUFACTURING METHOD 有权
标题翻译：磁盘制造支持方法和磁盘制造方法
公开(公告)号：US20080180844A1
公开(公告)日：2008-07-31
申请号：US12014398
申请日：2008-01-15
申请人： Hiroshi TAKEDA , Ken-ichi NISHIMORI , Tomotaka YOKOYAMA , Tadashi TOMONAGA
发明人： Hiroshi TAKEDA , Ken-ichi NISHIMORI , Tomotaka YOKOYAMA , Tadashi TOMONAGA
IPC分类号： G11B5/84 , G11B5/82 , G11B5/73
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/8404 , G11B5/855
摘要： A defect inspection is performed for each of glass substrates by a surface defect detector. The distance from the center of the glass substrate to a detected defect, as a radius of a nonmagnetic region to be formed circular, is recorded along with an ID assigned to the glass substrate. Such defect information is recorded in a defect list using a printer or recorded in an RFID tag using an RFID writer. The defect list or the RFID tag is attached to a glass-substrate case. Each glass substrate and its defect information are in one-to-one correspondence and are provided to a customer as a magnetic disk manufacturer. Based on the obtained defect information, the customer manufactures magnetic disks each being a discrete track recording medium having the nonmagnetic region formed at the position where the defect is present.
摘要翻译：通过表面缺陷检测器对玻璃基板进行缺陷检查。将从玻璃基板的中心到检测到的缺陷的距离作为形成圆形的非磁性区域的半径与分配给玻璃基板的ID一起被记录。使用打印机将这样的缺陷信息记录在缺陷列表中，或者使用RFID写入器记录在RFID标签中。缺陷列表或RFID标签附着在玻璃基板外壳上。每个玻璃基板及其缺陷信息是一一对应的，并作为磁盘制造商提供给客户。基于获得的缺陷信息，客户制造磁盘，每个磁盘都是具有在存在缺陷的位置处形成的非磁性区域的离散轨道记录介质。

7. 发明授权

US08567044B2 Method of manufacturing a magnetic disk 失效
标题翻译：制造磁盘的方法
公开(公告)号：US08567044B2
公开(公告)日：2013-10-29
申请号：US13223060
申请日：2011-08-31
申请人： Hiroshi Takeda , Ken-ichi Nishimori , Tomotaka Yokoyama , Tadashi Tomonaga
发明人： Hiroshi Takeda , Ken-ichi Nishimori , Tomotaka Yokoyama , Tadashi Tomonaga
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/8404 , G11B5/855
摘要： A defect inspection is performed for each of glass substrates by a surface defect detector. The distance from the center of the glass substrate to a detected defect, as a radius of a nonmagnetic region to be formed circular, is recorded along with an ID assigned to the glass substrate. Such defect information is recorded in a defect list using a printer or recorded in an RFID tag using an RFID writer. The defect list or the RFID tag is attached to a glass-substrate case. Each glass substrate and its defect information are in one-to-one correspondence and are provided to a customer as a magnetic disk manufacturer. Based on the obtained defect information, the customer manufactures magnetic disks each being a discrete track recording medium having the nonmagnetic region formed at the position where the defect is present.
摘要翻译：通过表面缺陷检测器对玻璃基板进行缺陷检查。将从玻璃基板的中心到检测到的缺陷的距离作为形成圆形的非磁性区域的半径与分配给玻璃基板的ID一起被记录。使用打印机将这样的缺陷信息记录在缺陷列表中，或者使用RFID写入器记录在RFID标签中。缺陷列表或RFID标签附着在玻璃基板外壳上。每个玻璃基板及其缺陷信息是一一对应的，并作为磁盘制造商提供给客户。基于获得的缺陷信息，客户制造磁盘，每个磁盘都是具有在存在缺陷的位置处形成的非磁性区域的离散轨道记录介质。

8. 发明申请

US20100321826A1 MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF THE MAGNETIC RECORDING MEDIUM 有权
标题翻译：磁记录介质的磁记录介质和制造方法
公开(公告)号：US20100321826A1
公开(公告)日：2010-12-23
申请号：US12745206
申请日：2009-03-09
申请人： Junichi Yasumori , Yoshiaki Sonobe , Tadashi Tomonaga
发明人： Junichi Yasumori , Yoshiaki Sonobe , Tadashi Tomonaga
IPC分类号： G11B5/82 , B05D5/00
CPC分类号： G11B5/855 , G11B5/66
摘要： It is an object to manufacture magnetic recording media with the high recording density. Since nonmagnetic portions (8) with a predetermined pattern are formed in a recording auxiliary layer (4) formed on a magnetic recording layer (3), it is possible to actualize a magnetic recording medium where magnetic portions (7) and the magnetic recording layer (3) immediately below the portions (7) are recording units. The nonmagnetic portions (8) are formed by non-magnetization using ion implantation, and it is thereby possible to manufacture magnetic recording media with the high recording density.
摘要翻译：本发明的目的是制造具有高记录密度的磁记录介质。由于在形成在磁记录层（3）上的记录辅助层（4）中形成具有预定图案的非磁性部分（8），因此可以实现磁记录介质，其中磁性部分（7）和磁记录层（3）的正下方是记录单元。非磁性部分（8）通过使用离子注入的非磁化形成，从而可以制造具有高记录密度的磁记录介质。

9. 发明授权

US08640497B2 Method of manufacturing glass substrate for magnetic disk and system for manufacturing glass substrate for magnetic disk 有权
标题翻译：制造磁盘用玻璃基板的方法及制造用于磁盘的玻璃基板的系统
公开(公告)号：US08640497B2
公开(公告)日：2014-02-04
申请号：US12525251
申请日：2008-01-24
申请人： Ryuuichi Kashima , Hideki Isono , Shinji Eda , Tomotaka Yokoyama , Tadashi Tomonaga , Kraisorn Phandon , Weeraphan Yayod
发明人： Ryuuichi Kashima , Hideki Isono , Shinji Eda , Tomotaka Yokoyama , Tadashi Tomonaga , Kraisorn Phandon , Weeraphan Yayod
IPC分类号： C03B15/00
CPC分类号： B24B9/08 , C03C21/002 , G11B5/8404
摘要： To provide a magnetic-disk glass substrate manufacturing method that can reduce the inner diameter dimensional error.A magnetic-disk glass substrate manufacturing method of this invention including a chemical strengthening step of bringing a plurality of glass substrates 102 into contact with chemical strengthening treatment solutions of a plurality of chemical strengthening treatment baths 130, respectively, to chemically strengthen the glass substrates further includes an inner diameter measuring step of measuring the inner diameter of each of the glass substrates 102 before the chemical strengthening step, a grasping step of grasping a variation of the inner diameter of the glass substrate 102 to be generated by the chemical strengthening step for each of the chemical strengthening treatment baths 130, and a combination determining step of determining the chemical strengthening treatment baths 130, that perform chemical strengthening, based on the variations so that the inner diameters of the glass substrates, whose inner diameters are measured, after the chemical strengthening step become a desired value. In the chemical strengthening step, the glass substrates 102 are chemically strengthened in the determined chemical strengthening treatment baths 130, respectively.
摘要翻译：提供可以减小内径尺寸误差的磁盘玻璃基板的制造方法。本发明的磁盘玻璃基板的制造方法包括使多个玻璃基板102分别与多个化学强化处理槽130的化学强化处理液接触的化学强化工序，以进一步化学强化玻璃基板包括在化学强化步骤之前测量每个玻璃基板102的内径的内径测量步骤，抓取步骤，用于通过化学强化步骤获得要通过化学强化步骤产生的玻璃基板102的内径的变化化学强化处理槽130的化学强化处理槽130的化学强化处理槽130的化学强化处理槽130的组合判定步骤，基于这些变化，进行化学强化的化学强化处理槽130，使得测定内径的玻璃基板的内径在化学品加强步骤成为一个希望 ed值。在化学强化步骤中，分别在确定的化学强化处理槽130中对玻璃基板102进行化学强化。

10. 发明申请

US20110308073A1 MAGNETIC DISK MANUFACTURING SUPPORT METHOD AND MAGNETIC DISK MANUFACTURING METHOD 失效
标题翻译：磁盘制造支持方法和磁盘制造方法
公开(公告)号：US20110308073A1
公开(公告)日：2011-12-22
申请号：US13223060
申请日：2011-08-31
申请人： Hiroshi TAKEDA , Ken-ichi Nishimori , Tomotaka Yokoyama , Tadashi Tomonaga
发明人： Hiroshi TAKEDA , Ken-ichi Nishimori , Tomotaka Yokoyama , Tadashi Tomonaga
IPC分类号： G11B5/84
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/8404 , G11B5/855
摘要： A defect inspection is performed for each of glass substrates by a surface defect detector. The distance from the center of the glass substrate to a detected defect, as a radius of a nonmagnetic region to be formed circular, is recorded along with an ID assigned to the glass substrate. Such defect information is recorded in a defect list using a printer or recorded in an RFID tag using an RFID writer. The defect list or the RFID tag is attached to a glass-substrate case. Each glass substrate and its defect information are in one-to-one correspondence and are provided to a customer as a magnetic disk manufacturer. Based on the obtained defect information, the customer manufactures magnetic disks each being a discrete track recording medium having the nonmagnetic region formed at the position where the defect is present.
摘要翻译：通过表面缺陷检测器对玻璃基板进行缺陷检查。将从玻璃基板的中心到检测到的缺陷的距离作为形成圆形的非磁性区域的半径与分配给玻璃基板的ID一起被记录。使用打印机将这样的缺陷信息记录在缺陷列表中，或者使用RFID写入器记录在RFID标签中。缺陷列表或RFID标签附着在玻璃基板外壳上。每个玻璃基板及其缺陷信息是一一对应的，并作为磁盘制造商提供给客户。基于获得的缺陷信息，客户制造磁盘，每个磁盘都是具有在存在缺陷的位置处形成的非磁性区域的离散轨道记录介质。

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