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1. 发明授权

US09336810B2 Method for manufacturing glass blank for magnetic disk, method for manufacturing glass substrate for magnetic disk 有权
标题翻译：磁盘用玻璃坯料的制造方法，磁盘用玻璃基板的制造方法
公开(公告)号：US09336810B2
公开(公告)日：2016-05-10
申请号：US13982877
申请日：2012-04-27
申请人： Hideki Isono , Hidekazu Tanino , Akira Murakami , Takashi Sato , Masamune Sato , Masaru Onishi
发明人： Hideki Isono , Hidekazu Tanino , Akira Murakami , Takashi Sato , Masamune Sato , Masaru Onishi
IPC分类号： C03B11/12 , G11B5/84 , C03B11/08
CPC分类号： G11B5/8404 , C03B11/088 , C03B11/122 , C03B11/125 , C03B2215/07 , C03B2215/70 , Y02P40/57
摘要： A method for manufacturing a glass substrate for magnetic disk is provided in which a glass is kept from being fused to a mold during press forming and shape processing to achieve a good circularity is efficiently performed. The method includes: a forming process of forming a disk-shaped glass blank by direct-pressing a molten glass by a pair of dies; and a shape processing process of performing at least one of inner hole formation and outer shape formation for forming a disk-shaped glass substrate by forming a cutting line on the principal face of the glass blank, followed by growing the cutting line to perform cutting. In the forming process, press forming is performed while the temperature of the pair of dies, over a period of time until a molten glass is separated from the die after coming into contact with the die, is set at a temperature lower than a glass transition point (Tg) and a mold release material is not attached to the surfaces of the pair of dies.
摘要翻译：提供一种用于制造用于磁盘的玻璃基板的方法，其中在压制成形期间保持玻璃不熔化到模具，并且有效地执行形状处理以实现良好的圆形度。该方法包括：通过一对模具直接压制熔融玻璃来形成盘状玻璃坯料的成形过程; 以及通过在玻璃坯料的主面上形成切割线，进行用于形成圆盘状的玻璃基板的内孔形成和外形形成中的至少一种的形状加工工序，然后使切割线成长进行切削。在成形过程中，一边进行压制成形，一边在与模具接触的熔融玻璃与模具分离一段时间的一段时间内，将其设定为低于玻璃化转变温度点（Tg）和脱模材料未附接到该对模具的表面。

2. 发明申请

US20140033768A1 METHOD FOR MANUFACTURING GLASS BLANK FOR MAGNETIC DISK, METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK 有权
标题翻译：用于制造用于磁盘的玻璃棉的方法，用于制造用于磁盘的玻璃基底的方法
公开(公告)号：US20140033768A1
公开(公告)日：2014-02-06
申请号：US13982877
申请日：2012-04-27
申请人： Hideki Isono , Hidekazu Tanino , Akira Murakami , Takashi Sato , Masamune Sato , Masaru Onishi
发明人： Hideki Isono , Hidekazu Tanino , Akira Murakami , Takashi Sato , Masamune Sato , Masaru Onishi
IPC分类号： G11B5/84 , C03B11/12
CPC分类号： G11B5/8404 , C03B11/088 , C03B11/122 , C03B11/125 , C03B2215/07 , C03B2215/70 , Y02P40/57
摘要： A method for manufacturing a glass substrate for magnetic disk is provided in which a glass is kept from being fused to a mold during press forming and shape processing to achieve a good circularity is efficiently performed. The method includes: a forming process of forming a disk-shaped glass blank by direct-pressing a molten glass by a pair of dies; and a shape processing process of performing at least one of inner hole formation and outer shape formation for forming a disk-shaped glass substrate by forming a cutting line on the principal face of the glass blank, followed by growing the cutting line to perform cutting. In the forming process, press forming is performed while the temperature of the pair of dies, over a period of time until a molten glass is separated from the die after coming into contact with the die, is set at a temperature lower than a glass transition point (Tg) and a mold release material is not attached to the surfaces of the pair of dies.
摘要翻译：提供一种用于制造用于磁盘的玻璃基板的方法，其中在压制成形期间保持玻璃不熔化到模具，并且有效地执行形状处理以实现良好的圆形度。该方法包括：通过一对模具直接压制熔融玻璃来形成盘状玻璃坯料的成形过程; 以及通过在玻璃坯料的主面上形成切割线，进行用于形成圆盘状的玻璃基板的内孔形成和外形形成中的至少一种的形状加工工序，然后使切割线成长进行切削。在成形过程中，一边进行压制成形，一边在与模具接触的熔融玻璃与模具分离一段时间的一段时间内，将其设定为低于玻璃化转变温度点（Tg）和脱模材料未附接到该对模具的表面。

3. 发明申请

US20130316194A1 MANUFACTURING METHOD OF GLASS BLANK FOR MAGNETIC DISK, MANUFACTURING METHOD OF GLASS SUBSTRATE FOR MAGNETIC DISK, GLASS BLANK FOR MAGNETIC DISK, GLASS SUBSTRATE FOR MAGNETIC DISK, AND MAGNETIC DISK 有权
标题翻译：用于磁盘的玻璃丝的制造方法，用于磁盘的玻璃基板的制造方法，用于磁盘的玻璃膜，用于磁盘的玻璃基板和磁性盘
公开(公告)号：US20130316194A1
公开(公告)日：2013-11-28
申请号：US13864386
申请日：2013-04-17
申请人： Hideki ISONO , Hidekazu TANINO , Akira MURAKAMI , Takashi SATO , Masamune SATO
发明人： Hideki ISONO , Hidekazu TANINO , Akira MURAKAMI , Takashi SATO , Masamune SATO
IPC分类号： C03B11/05 , G11B5/735
CPC分类号： C03B11/05 , C03B11/088 , C03B11/122 , C03B11/125 , C03B2215/07 , C03B2215/70 , C03C19/00 , C03C2204/08 , G11B5/735 , G11B5/8404
摘要： To provide a method for manufacturing a glass blank for magnetic disk and a method for manufacturing a glass substrate for magnetic disk, which are capable of producing a glass blank for magnetic disk having a good surface waviness by press forming, and a method for manufacturing a glass substrate for magnetic disk. A method for manufacturing a glass blank for magnetic disk, which includes a forming process of press-forming a lump of molten glass using a pair of dies, wherein in the forming process, press forming is performed using thermally equalizing means for reducing a difference in temperature in the press forming surface of the die during pressing of the molten glass.
摘要翻译：提供一种制造用于磁盘的玻璃坯料的方法和用于制造用于磁盘的玻璃基板的方法，其能够通过压制成型制造具有良好的表面波纹的磁盘用玻璃坯料，以及制造方法磁盘用玻璃基板。一种用于制造磁盘用玻璃坯料的方法，其包括使用一对模具对熔融玻璃块进行压制成形的方法，其中在成形过程中，使用热平衡装置进行压制成形，以减少在熔融玻璃的压制期间模具的压制成形表面的温度。

4. 发明授权

US08567216B2 Manufacturing method of a sheet glass material for magnetic disk, manufacturing method of a glass substrate for magnetic disk 失效
标题翻译：磁盘用玻璃板的制造方法，磁盘用玻璃基板的制造方法
公开(公告)号：US08567216B2
公开(公告)日：2013-10-29
申请号：US13362256
申请日：2012-01-31
申请人： Hideki Isono
发明人： Hideki Isono
IPC分类号： C03B11/00
CPC分类号： C03B11/00 , C03B11/088 , C03B2215/70 , C03C3/076
摘要： A manufacturing method of a glass substrate for magnetic disk including a pair of principal surfaces is disclosed The method includes the steps of: dropping process for dropping a lump of molten glass; pressing process for forming a sheet glass material by sandwiching simultaneously the lump from both sides of the dropping path of the lump with surfaces of the pair of dies facing together, and performing press forming to the lump; and machining process for machining the sheet glass material, wherein the press forming sandwiches the lump while moving the pair of dies in the direction of drop of the lump so that relative speed of the lump to that of the pair of dies approaches zero.
摘要翻译：公开了包括一对主表面的用于磁盘的玻璃基板的制造方法。该方法包括以下步骤：落下熔融玻璃块的滴落工序; 压制工艺用于通过将一对模具的表面面向一体的同时从块体的下落路径的两侧夹持块体，并进行冲压成形而形成片状玻璃材料; 以及用于加工平板玻璃材料的加工工艺，其中压制成形在使一对模具沿着该块的下落方向移动的同时夹持块状，使得该块与该对模具的相对速度接近零。

5. 发明申请

US20130086945A1 MANUFACTURING METHOD OF A SHEET GLASS MATERIAL FOR MAGNETIC DISK AND MANUFACTURING METHOD OF A GLASS SUBSTRATE FOR MAGNETIC DISK 有权
标题翻译：用于磁盘的玻璃材料的制造方法和用于磁盘的玻璃基板的制造方法
公开(公告)号：US20130086945A1
公开(公告)日：2013-04-11
申请号：US13435838
申请日：2012-03-30
申请人： Hideki ISONO , Hidekazu Tanino
发明人： Hideki ISONO , Hidekazu Tanino
IPC分类号： C03B11/08
CPC分类号： C03B11/084 , C03B11/086 , C03B11/088 , C03B2215/03 , C03B2215/11 , C03B2215/16 , C03B2215/44 , C03B2215/50 , C03B2215/70
摘要： A manufacturing method of a sheet glass material for magnetic disk, the method includes, dropping process for dropping a lump of molten glass; pressing process for sandwiching simultaneously the lump from both sides of the dropping path of the lump with surfaces of a pair of dies facing together, and performing press forming to the lump to obtain a sheet glass material, wherein at least one of the pair of dies has a concave shape with respect to the dropping path of the lump.
摘要翻译：一种用于磁盘的片状玻璃材料的制造方法，该方法包括：滴下熔融玻璃片的滴落工序; 压制工序，同时从一块模具的表面两面同时夹入块体，并对其进行压制成形，得到一片玻璃材料，其中，一对模具中的至少一个相对于隆起部的下落路径具有凹状。

6. 发明申请

US20110283739A1 METHOD FOR MANUFACTURING GLASS BLANK, METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM SUBSTRATE AND METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM 审中-公开
标题翻译：制造玻璃棉的方法，制造磁记录介质基板的方法和制造磁记录介质的方法
公开(公告)号：US20110283739A1
公开(公告)日：2011-11-24
申请号：US13071212
申请日：2011-03-24
申请人： Makoto OSAWA , Akira MURAKAMI , Nobuhiro SUGIYAMA , Takashi SATOU , Hideki ISONO , Kinobu OSAKABE , Hidekazu TANINO , Takao MOTOHASHI
发明人： Makoto OSAWA , Akira MURAKAMI , Nobuhiro SUGIYAMA , Takashi SATOU , Hideki ISONO , Kinobu OSAKABE , Hidekazu TANINO , Takao MOTOHASHI
IPC分类号： C03B7/14 , C03B11/05 , C03B7/10 , C03C17/00
CPC分类号： G11B5/8404 , C03B7/10 , C03B11/088 , C03B2215/70 , Y02P40/57
摘要： Provided are a method of manufacturing a glass blank, the method including press-molding a molten glass gob under a state in which a separation mark formed on an upper surface of the molten glass gob faces at least one of the molding surface sides of a pair of press molds arranged facing each other in a horizontal direction, when the molten glass gob falls into a space between the pair of press molds, and a method of manufacturing a magnetic recording medium substrate and a method of manufacturing a magnetic recording medium, both using the glass blank.
摘要翻译：提供一种制造玻璃坯料的方法，该方法包括在形成在熔融玻璃料粒的上表面上的分离标记面对至少一个成型表面侧的状态下对熔融玻璃料滴进行加压成型当熔融玻璃料滴落入一对压模之间的空间时，在水平方向上彼此相对布置的压模，以及制造磁记录介质基板的方法和制造磁记录介质的方法，均使用玻璃空白。

7. 发明申请

US20110129693A1 MAGNETIC DISK GLASS SUBSTRATE 审中-公开
标题翻译：磁性盘玻璃基板
公开(公告)号：US20110129693A1
公开(公告)日：2011-06-02
申请号：US13004716
申请日：2011-01-11
申请人： Hideki ISONO
发明人： Hideki ISONO
IPC分类号： G11B5/82
CPC分类号： G11B5/8404 , G11B5/7315 , Y10T428/24612
摘要： A magnetic disk glass substrate including compressive stress layers at main surfaces and a tensile stress layer between the compressive stress layers formed by chemical strengthening. When the glass substrate has a thickness of less than 0.5 mm and the tensile stress layer has a thickness L and a tensile stress of Pt (kg/mm2), the following relation holds: 0.4 (kg/mm)≦L·Pt≦2.0 (kg/mm)
摘要翻译：一种磁盘玻璃基板，包括主表面处的压应力层和通过化学强化形成的压应力层之间的拉伸应力层。当玻璃基板的厚度小于0.5mm，拉伸应力层的厚度L和拉伸应力为Pt（kg / mm2）时，以下关系成立：0.4（kg / mm）＆nlE; L·Pt＆nlE; 2.0（kg / mm）

8. 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。

9. 发明申请

US20090142484A1 METHOD OF MANUFACTURING MAGNETIC-DISK GLASS SUBSTRATE AND METHOD OF MANUFACTURING MAGNETIC DISK 有权
标题翻译：制造磁盘玻璃基板的方法和制造磁盘的方法
公开(公告)号：US20090142484A1
公开(公告)日：2009-06-04
申请号：US11910410
申请日：2006-03-27
申请人： Hideki Isono
发明人： Hideki Isono
IPC分类号： B05D5/12
CPC分类号： G11B5/8404 , C03C21/001 , C03C21/002
摘要： A process for producing a glass substrate for magnetic disk through chemical strengthening operation, in which the distribution of compressive stress is uniformed at a surface layer portion of the glass substrate to thereby, while preventing failures such as head crash and thermal asperity, realize a low flying height of magnetic head, attaining high-density information recording. In particular, the provided glass substrate for magnetic disk is suitable for application to compact magnetic disks for portable information equipment. The chemical strengthening operation includes the first step of bringing the glass substrate into contact with a first treatment solution (chemical strengthening treatment solution) containing first ions with an ionic radius larger than those of ions within the glass substrate and either the second and subsequent steps of bringing the platy glass into contact with treatment solutions containing second and subsequent bivalent ions, or the second and subsequent steps of bringing the glass substrate into contact with second and subsequent chemical strengthening treatment solutions containing second and subsequent ions exhibiting an ion exchange rate with ions within the glass substrate greater than that of the first ions to thereby decelerate the ion exchange.
摘要翻译：通过化学强化操作制造用于磁盘的玻璃基板的方法，其中压缩应力的分布在玻璃基板的表面层部分均匀化，从而在防止诸如磁头碰撞和热凹凸的故障的同时实现低磁头飞行高度，达到高密度信息记录。特别地，所提供的用于磁盘的玻璃基板适用于便携式信息设备的小型磁盘。化学强化操作包括使玻璃基板与含有离子半径大于玻璃基板内的离子半径的第一离子的第一处理溶液（化学强化处理溶液）接触的第一步骤，使板状玻璃与含有第二和随后的二价离子的处理溶液接触，或者使玻璃基板与第二次和随后的化学强化处理溶液接触的第二和随后步骤，所述第二和随后的化学强化处理溶液含有与离子的离子交换速率玻璃基板比第一离子的玻璃基板大，从而使离子交换减速。

10. 发明申请

US20070003796A1 Method for manufacturing magnetic disk glass substrate and method for manufacturing magnetic disk 审中-公开
标题翻译：制造磁盘玻璃基板的方法和制造磁盘的方法
公开(公告)号：US20070003796A1
公开(公告)日：2007-01-04
申请号：US11445270
申请日：2006-06-02
申请人： Hideki Isono , Katsuyuki Iwata
发明人： Hideki Isono , Katsuyuki Iwata
IPC分类号： C03C15/00 , B05D5/12 , G11B5/66
CPC分类号： C03C21/002 , C03C19/00 , G11B5/7315 , G11B5/8404
摘要： A method for manufacturing a magnetic disk glass substrate including a chemical strengthening step is provided. In the method, chemical strengthening treatment is sufficiently performed over the entire main surfaces of a glass substrate. Consequently, the resulting magnetic disk glass substrate can provide a magnetic disk allowing the magnetic head to have a low flying height and achieving high-density information recording, and particularly a magnetic desk suitably used in small hard disk drives for portable information apparatuses. In the chemical strengthening step, a chemical strengthening agent is brought into contact with a glass substrate to perform ion exchange by allowing the chemical strengthening agent to flow with respect to the glass substrate, or by moving the glass substrate with respect to the chemical strengthening agent.
摘要翻译：提供一种制造包括化学强化步骤的磁盘玻璃基板的方法。在该方法中，在玻璃基板的整个主表面上充分进行化学强化处理。因此，所得到的磁盘玻璃基板可以提供一种允许磁头具有低飞行高度并实现高密度信息记录的磁盘，特别是适合用于便携式信息设备的小型硬盘驱动器中的磁性台。在化学强化工序中，使化学强化剂与玻璃基板接触，通过使化学强化剂相对于玻璃基板流动，或者相对于化学强化剂移动玻璃基板，进行离子交换。

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