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1. 发明申请

US20120135153A1 GLASS SUBSTRATE FOR MAGNETIC DISK AND MANUFACTURING METHOD OF THE SAME 有权
标题翻译：用于磁盘的玻璃基板及其制造方法
公开(公告)号：US20120135153A1
公开(公告)日：2012-05-31
申请号：US13349495
申请日：2012-01-12
申请人： Kinobu OSAKABE , Hideki ISONO , Katsuyuki IWATA , Shinji EDA , Kenichiro TERADA
发明人： Kinobu OSAKABE , Hideki ISONO , Katsuyuki IWATA , Shinji EDA , Kenichiro TERADA
IPC分类号： B05D1/18
CPC分类号： G11B5/7315 , C03C21/002 , G11B5/8404
摘要： A glass substrate for a magnetic disk of the invention is a disk-shaped glass substrate for a magnetic disk where the substrate has a main surface and end face and is subjected to chemical reinforcement treatment, and is characterized in that the penetration length in the uppermost-portion stress layer on the main surface is 49.1 μm or less, and that assuming that an angle between the main surface and compressive stress in the stress profile by a Babinet compensator method is θ, a value y of {12·t·ln(tan θ)+(49.1/t)} is the penetration length in the uppermost-portion stress layer or less.
摘要翻译：本发明的磁盘用玻璃基板是用于磁盘的盘状玻璃基板，其中基板具有主表面和端面并进行化学强化处理，其特征在于，最上面的穿透长度主表面的应力层为49.1μm以下，假设通过Babinet补偿方法在应力分布中的主表面与压缩应力之间的角度为θ，则{12·t·ln （tan＆amp; t s）+（49.1 / t）}是最上部应力层的贯通长度以下。

2. 发明授权

US08783063B2 Glass substrate for magnetic disk and manufacturing method of the same 有权
标题翻译：磁盘用玻璃基板及其制造方法
公开(公告)号：US08783063B2
公开(公告)日：2014-07-22
申请号：US13349495
申请日：2012-01-12
申请人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
发明人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
IPC分类号： C03B9/14 , B05C3/00 , G11B5/73 , C03C21/00 , G11B17/08
CPC分类号： G11B5/7315 , C03C21/002 , G11B5/8404
摘要： A glass substrate for a magnetic disk of the invention is a disk-shaped glass substrate for a magnetic disk where the substrate has a main surface and end face and is subjected to chemical reinforcement treatment, and is characterized in that the penetration length in the uppermost-portion stress layer on the main surface is 49.1 μm or less, and that assuming that an angle between the main surface and compressive stress in the stress profile by a Babinet compensator method is θ, a value y of {12·t·ln(tan θ)+(49.1/t)} is the penetration length in the uppermost-portion stress layer or less.
摘要翻译：本发明的磁盘用玻璃基板是用于磁盘的盘状玻璃基板，其中基板具有主表面和端面并进行化学强化处理，其特征在于，最上面的穿透长度主表面的应力层为49.1μm以下，假设通过Babinet补偿方法在应力分布中的主表面与压缩应力之间的角度为θ，则{12·t·ln （tan＆amp; t s）+（49.1 / t）}是最上部应力层的贯通长度以下。

3. 发明授权

US08413464B2 Method for producing glass substrate for magnetic disk and method for producing magnetic disk 有权
标题翻译：制造磁盘用玻璃基板的方法及其制造方法
公开(公告)号：US08413464B2
公开(公告)日：2013-04-09
申请号：US12088815
申请日：2007-09-12
申请人： Katsuyuki Iwata , Hideki Isono , Kenichiro Terada
发明人： Katsuyuki Iwata , Hideki Isono , Kenichiro Terada
IPC分类号： C03C21/00
CPC分类号： G11B5/7315 , C03C17/008 , C03C21/001 , C03C21/002 , C03C21/005 , G11B5/8404
摘要： The present invention provides a method for producing a glass substrate for a magnetic disk in which the occurrence of micro-waviness on the glass substrate is prevented in a cooling step after a chemically strengthening step so that the glass substrate has a significantly smooth principal surface, and provides a method for producing a magnetic disk in which head crash, thermal asperity failures, and the like are prevented, the flying height of a magnetic head can be decreased, and high-density recording is enabled.In a method for producing a glass substrate for a magnetic disk including a chemically strengthening step in which a glass substrate is immersed in a heated chemically strengthening salt solution prepared by dissolving a chemically strengthening salt under heating, and metal ions in the glass substrate are ion-exchanged with metal ions in the chemically strengthening salt, wherein the chemically strengthening step is carried out using a chemically strengthening salt solution in which the dissolved chemically strengthening salt does not solidify until the temperature decreases to a temperature that provides hardness at which the surface shape of the glass substrate is not deformed by a force applied to the glass substrate when the chemically strengthening salt having adhered onto the glass substrate solidifies.
摘要翻译：本发明提供了一种制造用于磁盘的玻璃基板的方法，其中在化学强化步骤之后在冷却步骤中防止在玻璃基板上发生微波纹，使得玻璃基板具有显着平滑的主表面，并且提供了一种制造磁头的方法，其中防止头部碰撞，热凹凸不平等，可以降低磁头的飞行高度，并且能够进行高密度记录。在一种用于制造用于磁盘的玻璃基板的方法中，包括化学强化步骤，其中将玻璃基板浸入通过在加热下溶解化学强化盐而制备的加热的化学强化盐溶液中，并且玻璃基板中的金属离子是离子与化学强化盐中的金属离子交换，其中化学强化步骤使用化学强化盐溶液进行，其中溶解的化学强化盐不固化，直到温度降低到提供硬度的温度，其中表面形状当玻璃基板附着的化学强化盐固化时，玻璃基板的作用力不会施加到玻璃基板上。

4. 发明申请

US20110117822A1 DRESSING JIG FOR GLASS SUBSTRATE POLISHING PAD 审中-公开
标题翻译：玻璃衬垫抛光垫
公开(公告)号：US20110117822A1
公开(公告)日：2011-05-19
申请号：US12946290
申请日：2010-11-15
申请人： Kenichiro TERADA , Kazuo Mannami , Minoru Tamada
发明人： Kenichiro TERADA , Kazuo Mannami , Minoru Tamada
IPC分类号： B24B1/00 , B24B47/26
CPC分类号： B24B53/017 , B24B7/228
摘要： Dressing treatment of a polishing pad, adjusting a polishing surface of the polishing pad to given flatness and surface roughness without deteriorating productivity, a method for polishing a glass substrate, including polishing a main surface of a glass substrate using the polishing pad adjusted by the dressing treatment, and a method for manufacturing a glass substrate using the polishing method are provided. A dressing jig having arithmetic surface roughness on a surface performing dressing treatment of from 0.10 μm to 2.5 μm is used as the dressing jig for adjusting a polishing surface of the polishing pad to given flatness and surface roughness. A main surface of the glass substrate is polished with the polishing surface of the polishing pad having been subjected to a dressing treatment using the dressing jig.
摘要翻译：抛光垫的修整处理，将抛光垫的抛光表面调整到给定的平坦度和表面粗糙度而不降低生产率;玻璃基板的抛光方法，包括使用由敷料调节的抛光垫来研磨玻璃基板的主表面提供了使用该研磨方法制造玻璃基板的方法。使用在0.10μm〜2.5μm的修整处理的表面上具有算术表面粗糙度的修整夹具作为调整抛光垫的研磨面的修整夹具，使其具有平坦度和表面粗糙度。使用修整夹具对抛光垫的研磨面进行了修整处理，研磨玻璃基板的主表面。

5. 发明申请

US20100190038A1 GLASS SUBSTRATE FOR MAGNETIC DISK AND MANUFACTURING METHOD OF THE SAME 有权
标题翻译：用于磁盘的玻璃基板及其制造方法
公开(公告)号：US20100190038A1
公开(公告)日：2010-07-29
申请号：US12665623
申请日：2008-09-26
申请人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
发明人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
IPC分类号： G11B5/73 , B05D1/18 , G11B5/82 , G11B5/84
CPC分类号： G11B5/7315 , C03C21/002 , G11B5/8404
摘要： A glass substrate for a magnetic disk of the invention is a disk-shaped glass substrate for a magnetic disk where the substrate has a main surface and end face and is subjected to chemical reinforcement treatment, and is characterized in that the penetration length in the uppermost-portion stress layer on the main surface is 49.1 μm or less, and that assuming that an angle between the main surface and compressive stress in the stress profile by a Babinet compensator method is θ, a value y of {12·t·ln(tan θ)+(49.1/t)} is the penetration length in the uppermost-portion stress layer or less.
摘要翻译：本发明的磁盘用玻璃基板是用于磁盘的盘状玻璃基板，其中基板具有主表面和端面并进行化学强化处理，其特征在于，最上面的穿透长度主表面的应力层为49.1μm以下，假设通过Babinet补偿方法在应力分布中的主表面与压缩应力之间的角度为θ，则{12·t·ln （tan＆amp; t s）+（49.1 / t）}是最上部应力层的贯通长度以下。

6. 发明申请

US20090277222A1 METHOD FOR PRODUCING GLASS SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR PRODUCING MAGNETIC DISK 有权
标题翻译：用于生产用于磁盘的玻璃基板的方法和用于制造磁盘的方法
公开(公告)号：US20090277222A1
公开(公告)日：2009-11-12
申请号：US12088815
申请日：2007-09-12
申请人： Katsuyuki Iwata , Hideki Isono , Kenichiro Terada
发明人： Katsuyuki Iwata , Hideki Isono , Kenichiro Terada
IPC分类号： C03C21/00
CPC分类号： G11B5/7315 , C03C17/008 , C03C21/001 , C03C21/002 , C03C21/005 , G11B5/8404
摘要： The present invention provides a method for producing a glass substrate for a magnetic disk in which the occurrence of micro-waviness on the glass substrate is prevented in a cooling step after a chemically strengthening step so that the glass substrate has a significantly smooth principal surface, and provides a method for producing a magnetic disk in which head crash, thermal asperity failures, and the like are prevented, the flying height of a magnetic head can be decreased, and high-density recording is enabled.In a method for producing a glass substrate for a magnetic disk including a chemically strengthening step in which a glass substrate is immersed in a heated chemically strengthening salt solution prepared by dissolving a chemically strengthening salt under heating, and metal ions in the glass substrate are ion-exchanged with metal ions in the chemically strengthening salt, wherein the chemically strengthening step is carried out using a chemically strengthening salt solution in which the dissolved chemically strengthening salt does not solidify until the temperature decreases to a temperature that provides hardness at which the surface shape of the glass substrate is not deformed by a force applied to the glass substrate when the chemically strengthening salt having adhered onto the glass substrate solidifies.
摘要翻译：本发明提供了一种制造用于磁盘的玻璃基板的方法，其中在化学强化步骤之后在冷却步骤中防止在玻璃基板上发生微波纹，使得玻璃基板具有显着平滑的主表面，并且提供了一种制造磁头的方法，其中防止头部碰撞，热凹凸不平等，可以降低磁头的飞行高度，并且能够进行高密度记录。在一种用于制造用于磁盘的玻璃基板的方法中，包括化学强化步骤，其中将玻璃基板浸入通过在加热下溶解化学强化盐而制备的加热的化学强化盐溶液中，并且玻璃基板中的金属离子是离子与化学强化盐中的金属离子交换，其中化学强化步骤使用化学强化盐溶液进行，其中溶解的化学强化盐不固化，直到温度降低到提供硬度的温度，其中表面形状当玻璃基板附着的化学强化盐固化时，玻璃基板的作用力不会施加到玻璃基板上。

7. 发明授权

US08119267B2 Glass substrate for magnetic disk and manufacturing method of the same 有权
标题翻译：磁盘用玻璃基板及其制造方法
公开(公告)号：US08119267B2
公开(公告)日：2012-02-21
申请号：US12665623
申请日：2008-09-26
申请人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
发明人： Kinobu Osakabe , Hideki Isono , Katsuyuki Iwata , Shinji Eda , Kenichiro Terada
IPC分类号： C03C3/078 , G11B5/706 , B23Q3/00
CPC分类号： G11B5/7315 , C03C21/002 , G11B5/8404
摘要： A glass substrate for a magnetic disk of the invention is a disk-shaped glass substrate for a magnetic disk where the substrate has a main surface and end face and is subjected to chemical reinforcement treatment, and is characterized in that the penetration length in the uppermost-portion stress layer on the main surface is 49.1 μm or less, and that assuming that an angle between the main surface and compressive stress in the stress profile by a Babinet compensator method is θ, a value y of {12·t·ln(tan θ)+(49.1/t)} is the penetration length in the uppermost-portion stress layer or less.
摘要翻译：本发明的磁盘用玻璃基板是用于磁盘的盘状玻璃基板，其中基板具有主表面和端面并进行化学强化处理，其特征在于，最上面的穿透长度主表面的应力层为49.1μm以下，假设通过Babinet补偿方法在应力分布中的主表面与压缩应力之间的角度为θ，则{12·t·ln （tan＆amp; t s）+（49.1 / t）}是最上部应力层的贯通长度以下。

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