公开(公告)号：US08697592B2

公开(公告)日：2014-04-15

申请号：US13490511

申请日：2012-06-07

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/085 ,  C03C3/091 ,  G11B7/241

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US20130040169A1

公开(公告)日：2013-02-14

申请号：US13490511

申请日：2012-06-07

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/00 ,  C03C3/083 ,  C03C3/085 ,  G11B5/73 ,  C03C3/091 ,  C03C3/062 ,  C03C3/064 ,  C03C3/089 ,  C03C3/087

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US20100160141A1

公开(公告)日：2010-06-24

申请号：US12656512

申请日：2010-02-01

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/093 ,  C03C3/083 ,  C03C3/085 ,  C03C3/091

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US08222170B2

公开(公告)日：2012-07-17

申请号：US12656512

申请日：2010-02-01

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/085 ,  C03C3/091 ,  G11B7/241

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12μm-1/2或更小，或具有 在露点为-5℃以下的气氛中测定的7μm-1/2以下的脆性指数值，或摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US20090220824A1

公开(公告)日：2009-09-03

申请号：US12385778

申请日：2009-04-20

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： G11B5/62

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐划伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12mum-1/2或更小，或具有 在露点为-5℃以下的气氛中测定为7mum -1 / 2以下的脆性指数值，或者摩尔％为40〜75％的SiO 2的玻璃基板，2〜 45％的B 2 O 3和/或Al 2 O 3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2，B 2 O 3，Al 2 O 3和 R'2O为90摩尔％以上，磁性信息记录媒体包含形成在玻璃基板上的磁记录层。

公开(公告)号：US07090937B2

公开(公告)日：2006-08-15

申请号：US10810896

申请日：2004-03-29

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： G11B5/64 ,  C03C3/00

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐刮擦性和重量轻并且具有高的断裂韧性，玻璃基板在水中测得的脆性指数值为12μm/ SUP>以下或具有在露点为-5℃以下的气氛中测定的脆性指数值为7μm-1/2以下的玻璃基板，或包含 的摩尔％，40〜75％的SiO 2，2〜45％的B 2 O 3 3和/或Al 2 O 3， 2 O 3和0〜40％的R'2 O O，其中R'是选自Li，Na和 K），其中SiO 2，B 2 O 3，N 2 O 3的总含量，Al 2 O 3， 3和R'2 O O至少为90摩尔％，磁信息记录介质包括形成在玻璃基板上的磁记录层。

公开(公告)号：US20060205584A1

公开(公告)日：2006-09-14

申请号：US11434147

申请日：2006-05-16

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C03C3/091

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

公开(公告)号：US06818576B2

公开(公告)日：2004-11-16

申请号：US10156659

申请日：2002-05-29

申请人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Atsuko Morita ,  Xuelu Zou

IPC分类号： C04B3089

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C3/064 ,  C03C3/083 ,  C03C3/085 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  C03C19/00 ,  C03C21/00

摘要： Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 &mgr;m−1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 &mgr;m−1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R′2O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R′2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

摘要翻译： 公开了一种用于信息记录介质的玻璃基板，具有优异的耐擦伤性和重量轻并且具有高断裂韧性，玻璃基板在水中测得的脆性指数值为12mum -1/2以下， 在露点为-5℃以下的气氛中测定的具有7mum -1/2以下的脆性指数值，或者摩尔％含有40〜75％的摩尔％ SiO2，2〜45％的B2O3和/或Al2O3和0〜40％的R'2O，其中R'为选自Li，Na和K中的至少一种），其中SiO 2的总含量， B 2 O 3，Al 2 O 3和R'2O为至少90摩尔％，磁性信息记录介质包含形成在玻璃基板上的磁记录层。

公开(公告)号：US07601446B2

公开(公告)日：2009-10-13

申请号：US10505282

申请日：2003-10-29

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： G11B5/65 ,  C03C3/17 ,  C03C3/21 ,  C03C19/00

CPC分类号： G11B5/7315 ,  C03C3/085 ,  C03C15/00 ,  C03C21/002 ,  G11B5/8404

摘要： A substrate for an information recording medium, which has high heat resistance and high acid resistance and is formed of a glass having a glass transition temperature (Tg) of 600° C. or higher and having an etching rate of 0.1 μm/minute or less with regard to a hydrosilicofluoric acid aqueous solution that is maintained at a temperature of 45° C. and has a hydrosilicofluoric acid concentration of 1.72% by weight, and an information recording medium having an information recording layer formed on the above substrate.

摘要翻译： 一种用于信息记录介质的基板，其具有高耐热性和高耐酸性，并且由玻璃化转变温度（Tg）为600℃以上并且蚀刻速率为0.1mum /分钟以下的玻璃形成 关于保持在45℃的温度，氢硅氟酸浓度为1.72重量％的氢硅氟酸水溶液，以及在上述基板上形成有信息记录层的信息记录介质。

公开(公告)号：US20060223689A1

公开(公告)日：2006-10-05

申请号：US11389532

申请日：2006-03-27

申请人： Mikio Ikenishi ,  Xuelu Zou

发明人： Mikio Ikenishi ,  Xuelu Zou

IPC分类号： C03B11/00 ,  C03B23/00 ,  C03B17/00 ,  C03B21/00 ,  C03C3/16

CPC分类号： C03C3/17 ,  C03C3/247

摘要： A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F− to the total content of F− and O2−, F−/(F−+O2−) being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (νd) of 67 to 90.

摘要翻译： 一种低分散度光学玻璃，适用于从熔融玻璃制造优质预成型件，适用于作为必需阳离子成分的氟磷酸盐玻璃作为必需阳离子成分的精密加压成型， > 3 + ，选自Mg 2+，Ca 2+，Sr 2+和BaO 2的至少两个成员 > 2 + 为二价阳离子成分（R 2+ +）和Li + +，阳离子％含有10〜45％的P 5 5％〜30％的Al 3+，0〜20％的Mg 2+，0〜25％的Ca 2+， 0〜30％的Sr 2+，0〜33％的Ba 2+，1〜30％的Li 2+， ，0〜10％的Na +，0〜10％的K +，0〜5％的Y 3+，0〜 15％的B 3+ +，F 0的含量与F 0〜O 2的总含量的摩尔比 光学玻璃的折射率为0.25〜0.85，光学玻璃具有折射率（折射率） （N N d） 1.40至1.58，阿贝数（nu> d ）为67至90。