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    Glass for substrate, and glass substrate
    1.
    发明授权
    Glass for substrate, and glass substrate 有权
    玻璃基板和玻璃基板

    公开(公告)号：US08580411B2

    公开(公告)日：2013-11-12

    申请号：US13271322

    申请日：2011-10-12

    申请人： Jun Endo ,  Tetsuya Nakashima ,  Atsuyoshi Takenaka

    发明人： Jun Endo ,  Tetsuya Nakashima ,  Atsuyoshi Takenaka

    IPC分类号： G11B5/73 ,  C03C3/083

    CPC分类号： G11B5/7315 ,  C03C3/083 ,  C03C3/087

    摘要： To provide glass to be used for a substrate which is, as a substrate, less susceptible to surface roughening even if subjected to cleaning by means of a strongly acidic solution.Glass for a substrate, which comprises, as represented by mol % based on the following oxides, from 62.5 to 69% of SiO2, from 9 to 15.5% of Al2O3, from 8 to 16 of Li2O, from 0 to 8% of Na2O, from 0 to 7% of K2O and from 0 to 3.5% of ZrO2, provided that SiO2—Al2O3 is at least 53.3%, Li2O+Na2O+K2O is from 17 to 24%, and the total of contents of the above six components is at least 97%.

    摘要翻译： 为了提供用作基板的玻璃，作为基板，即使经受强酸溶液的清洗也不太容易受到表面粗糙化的影响。 用于底物的玻璃，其以由以下氧化物的摩尔％表示，为62.5至69％的SiO 2，9至15.5％的Al 2 O 3，8至16的Li 2 O，0至8％的Na 2 O， 0〜7％的K 2 O和0〜3.5％的ZrO 2，只要SiO 2 -Al 2 O 3为至少53.3％，Li 2 O + Na 2 O + K 2 O为17〜24％，上述6种成分的总和为 至少97％。

    Glass substrate for information recording medium and magnetic disk
    2.
    发明授权
    Glass substrate for information recording medium and magnetic disk 有权
    用于信息记录介质和磁盘的玻璃基板

    公开(公告)号：US08349476B2

    公开(公告)日：2013-01-08

    申请号：US12909221

    申请日：2010-10-21

    申请人： Jun Endo ,  Tetsuya Nakashima

    发明人： Jun Endo ,  Tetsuya Nakashima

    IPC分类号： G11B5/706 ,  C03B37/014 ,  C03B37/00

    CPC分类号： G11B5/7315 ,  C03C3/083

    摘要： To provide a process to improve acid resistance of a glass substrate for an information recording medium. A process for producing the glass substrate for an information recording medium, includes processing a glass formed into a plate by a float process, a down-draw method or a press method, wherein, in cooling the glass at the last step the glass has a temperature of at least its strain point, the time during which the glass temperature is at least its strain point and at most a temperature where the glass viscosity is 1010dPa·s is at least 13 minutes.

    摘要翻译： 提供一种提高信息记录介质的玻璃基板耐酸性的方法。 一种用于信息记录介质的玻璃基板的制造方法，其特征在于，包括通过浮法加工形成板的玻璃，下拉法或压制法，其中，在最后一步冷却玻璃时，玻璃具有 至少其应变点的温度，玻璃温度至少为其应变点的时间，以及至多玻璃粘度为1010dPa·s的温度为至少13分钟。

    Glass for information recording medium substrate, glass substrate for information recording medium and magnetic disk
    4.
    发明授权
    Glass for information recording medium substrate, glass substrate for information recording medium and magnetic disk 有权
    用于信息记录介质基板的玻璃，用于信息记录介质的玻璃基板和磁盘

    公开(公告)号：US08168313B2

    公开(公告)日：2012-05-01

    申请号：US12724570

    申请日：2010-03-16

    申请人： Jun Endo ,  Tatsuo Nagashima ,  Tetsuya Nakashima ,  Manuel Diaz Reyes

    发明人： Jun Endo ,  Tatsuo Nagashima ,  Tetsuya Nakashima ,  Manuel Diaz Reyes

    IPC分类号： G11B5/73 ,  C03C3/085 ,  C03C3/087

    CPC分类号： G11B5/7315 ,  C03C3/085 ,  C03C3/087

    摘要： A glass for an information recording medium substrate, which comprises, as represented by mol % based on the following oxides, from 61 to 72% of SiO2, from 3 to 11% of Al2O3, from 0 to 14.3% of Li2O, from 0 to 22% of Na2O, from 0 to 22% of K2O, from 4 to 13% of MgO, from 0 to 6% of TiO2 and from 0 to 5% of ZrO2, provided that the total content of Li2O, Na2O and K2O (R2O) is from 10 to 22%, and (a) the ratio of the content of Li2O to R2O (Li2O/R2O) is at most 0.52, (b) the ratio of the content of Na2O to R2O (Na2O/R2O) is at least 0.35, or (c) the ratio of the content of K2O to R2O (K2O/R2O) is at least 0.45.

    摘要翻译： 一种用于信息记录介质基材的玻璃，其以以下氧化物的摩尔％表示，SiO 2为61至72％，Al 2 O 3为3至11％，Li 2 O 0至14.3％，为0至 22％的Na2O，0〜22％的K2O，4〜13％的MgO，0〜6％的TiO2和0〜5％的ZrO2，条件是Li2O，Na2O和K2O（R2O）的总含量 ）为10〜22％，（a）Li 2 O与R 2 O（Li 2 O / R 2 O）的含量比例为0.52以下，（b）Na2O与R2O的含量比（Na2O / R2O）为 至少0.35，或（c）K2O与R2O（K2O / R2O）的含量之比至少为0.45。

    GLASS FOR INFORMATION RECORDING MEDIUM SUBSTRATE, GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND MAGNETIC DISK
    6.
    发明申请
    GLASS FOR INFORMATION RECORDING MEDIUM SUBSTRATE, GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND MAGNETIC DISK 有权
    用于信息记录介质基板的玻璃，用于记录介质和磁盘的玻璃基板

    公开(公告)号：US20100255350A1

    公开(公告)日：2010-10-07

    申请号：US12724570

    申请日：2010-03-16

    申请人： Jun ENDO ,  Tatsuo Nagashima ,  Tetsuya Nakashima ,  Manuel Diaz Reyes

    发明人： Jun ENDO ,  Tatsuo Nagashima ,  Tetsuya Nakashima ,  Manuel Diaz Reyes

    IPC分类号： G11B5/73 ,  C03C3/085 ,  C03C3/087

    CPC分类号： G11B5/7315 ,  C03C3/085 ,  C03C3/087

    摘要： To provide glass for an information recording medium substrate, which is excellent in the acid resistance and weather resistance.Glass for an information recording medium substrate, which comprises, as represented by mol % based on the following oxides, from 61 to 72% of SiO2, from 3 to 12% of Al2O3, from 0 to 14.3 of Li2O, from 0 to 22% of Na2O, from 0 to 22% of K2O, from 4 to 13% of MgO, from 0 to 6% of TiO2 and from 0 to 5% of ZrO2, provided that the total content of Li2O, Na2O and K2O (R2O) is from 8 to 22%, the ratio of the content of Li2O to R2O (Li2O/R2O) is at most 0.52, the ratio of the content of Na2O to R2O (Na2O/R2O) is at least 0.35, or the ratio of the content of K2O to R2O (K2O/R2O) is at least 0.45.

    摘要翻译： 提供耐酸性和耐候性优异的信息记录介质基板用玻璃。 用于信息记录介质基板的玻璃，其以以下氧化物的摩尔％表示，SiO 2为61〜72％，Al 2 O 3为12〜12，Li 2 O 0〜14.3，0〜22重量％ 的Na2O，0〜22％的K2O，4〜13％的MgO，0〜6％的TiO2和0〜5％的ZrO2，条件是Li2O，Na2O和K2O（R2O）的总含量为 8〜22％，Li 2 O与R 2 O（Li 2 O / R 2 O）的含量比例为0.52以下，Na2O与R2O的含量比（Na2O / R2O）为0.35以上， 的K2O至R2O（K2O / R2O）为至少0.45。

    Process for producing glass substrate for information recording medium
    8.
    发明授权
    Process for producing glass substrate for information recording medium 有权
    信息记录媒体用玻璃基板的制造方法

    公开(公告)号：US08402790B2

    公开(公告)日：2013-03-26

    申请号：US12909423

    申请日：2010-10-21

    申请人： Jun Endo ,  Tetsuya Nakashima

    发明人： Jun Endo ,  Tetsuya Nakashima

    IPC分类号： G11B5/84 ,  C03B25/00 ,  G11B5/62

    CPC分类号： G11B5/8404 ,  C03B25/025 ,  G11B5/7315

    摘要： To provide a process to improve acid resistance of a glass substrate for an information recording medium.A process for producing a glass substrate for an information recording medium, comprising processing a glass formed into a plate by a float process, a down-draw method or a press method, wherein, in cooling of the glass in the last step where the glass has a temperature of at least its strain point, the time during which the glass temperature is at least its strain point and at most a temperature where the glass viscosity is 1010 dPa·s is at least 13 minutes.

    摘要翻译： 提供一种提高信息记录介质的玻璃基板耐酸性的方法。 一种用于信息记录介质的玻璃基板的制造方法，其特征在于，包括通过浮法加工形成为板的玻璃，下拉法或压制法，其中在玻璃的最后工序中，玻璃的冷却 具有至少应变点的温度，玻璃温度至少为其应变点的时间和玻璃粘度为1010dPa·s以下的温度为至少13分钟。

    GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND MAGNETIC DISK
    9.
    发明申请
    GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND MAGNETIC DISK 有权
    用于信息记录介质和磁盘的玻璃基板

    公开(公告)号：US20110123833A1

    公开(公告)日：2011-05-26

    申请号：US12909221

    申请日：2010-10-21

    申请人： Jun Endo ,  Tetsuya Nakashima

    发明人： Jun Endo ,  Tetsuya Nakashima

    IPC分类号： G11B5/706

    CPC分类号： G11B5/7315 ,  C03C3/083

    摘要： To provide a glass for an information recording medium substrate, which is excellent in weather resistance.A glass substrate for an information recording medium, which is made of an alkali aluminosilicate glass, wherein the difference obtained by subtracting the glass transition temperature Tg from the fictive temperature Tf, i.e. Tf−Tg, is at most 5° C. The glass substrate for an information recording medium, which comprises, as represented by mol % based on the following oxides, from 64 to 67% of SiO2, from 8 to 10% of Al2O3, from 10 to 13% of Li2O, from 9 to 12% of Na2O, from 0 to 2% of K2O and from 2 to 4% of ZrO2, provided that the total content of Li2O, Na2O and K2O, i.e. Li2O+Na2O+K2O, is from 21 to 25%.

    摘要翻译： 提供耐候性优异的信息记录介质基板用玻璃。 用于由铝硅酸铝玻璃制成的信息记录介质的玻璃基板，其中通过从假想温度Tf（即Tf-Tg）减去玻璃化转变温度Tg得到的差值为至多5℃。玻璃基板 对于信息记录介质，其包含以下列氧化物的摩尔％表示：SiO 2 64％〜67％，Al 2 O 3 8〜10％，Li 2 O 10〜13％，Li 2 O 9〜12％ Na 2 O，0〜2％的K 2 O和2〜4％的ZrO 2，条件是Li 2 O，Na 2 O和K 2 O（即Li 2 O + Na 2 O + K 2 O）的总含量为21〜25％。

    GLASS FOR SUBSTRATE, AND GLASS SUBSTRATE
    10.
    发明申请
    GLASS FOR SUBSTRATE, AND GLASS SUBSTRATE 有权
    基材玻璃和玻璃基材

    公开(公告)号：US20120100397A1

    公开(公告)日：2012-04-26

    申请号：US13271322

    申请日：2011-10-12

    申请人： Jun ENDO ,  Tetsuya Nakashima ,  Atsuyoshi Takenaka

    发明人： Jun ENDO ,  Tetsuya Nakashima ,  Atsuyoshi Takenaka

    IPC分类号： G11B5/73 ,  C03C3/085 ,  C03C3/087 ,  C03C3/083

    CPC分类号： G11B5/7315 ,  C03C3/083 ,  C03C3/087

    摘要： To provide glass to be used for a substrate which is, as a substrate, less susceptible to surface roughening even if subjected to cleaning by means of a strongly acidic solution.Glass for a substrate, which comprises, as represented by mol % based on the following oxides, from 62.5 to 69% of SiO2, from 9 to 15.5% of Al2O3, from 8 to 16 of Li2O, from 0 to 8% of Na2O, from 0 to 7% of K2O and from 0 to 3.5% of ZrO2, provided that SiO2—Al2O3 is at least 53.3%, Li2O+Na2O+K2O is from 17 to 24%, and the total of contents of the above six components is at least 97%.

    摘要翻译： 为了提供用作基板的玻璃，作为基板，即使经受强酸溶液的清洗也不太容易受到表面粗糙化的影响。 用于底物的玻璃，其以由以下氧化物的摩尔％表示，为62.5至69％的SiO 2，9至15.5％的Al 2 O 3，8至16的Li 2 O，0至8％的Na 2 O， 0〜7％的K 2 O和0〜3.5％的ZrO 2，只要SiO 2 -Al 2 O 3为至少53.3％，Li 2 O + Na 2 O + K 2 O为17〜24％，上述6种成分的总和为 至少97％。