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公开(公告)号:US07396788B2
公开(公告)日:2008-07-08
申请号:US10460908
申请日:2003-06-13
申请人: Hideki Kawai , Toshiharu Mori
发明人: Hideki Kawai , Toshiharu Mori
CPC分类号: G11B5/7315 , C03C3/083
摘要: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 15% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 65 to 90% by weight; a total of 7 to 20% by weight of R2O compounds, where R=Li, Na, and K; and a total of 0 to 12% by weight, zero inclusive, of R′O compounds, where R′=Mg, Ca, Sr, Ba, and Zn. Moreover, the following conditions are fulfilled: B2O3=0% by weight, or Al2O3/B2O3≧1.0; and (SiO2+Al2O3+B2O3)/(the total of R2O compounds+the total of R2O compounds)≧3.
摘要翻译: 用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至15重量%,包括0的B 2 O 3 3; SiO 2 + 2→2→3→3→3→3→3 SUB>占65 至90重量% 总共7至20重量%的R 2 O 2化合物,其中R = Li,Na和K; 和0〜12重量%,包括0的R'O化合物,其中R'= Mg,Ca,Sr,Ba和Zn。 此外,满足以下条件:B 2 O 3 3 = 0重量%,或Al 2 O 3 3 SUB > / B sub> 3 SUB> = 1.0; 和(SiO 2/2 + Al 2 O 3 + B 2 O 3 3) /(R 2 O 2化合物的总和+ R 2 O O化合物的总和)= 3。
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公开(公告)号:US07192898B2
公开(公告)日:2007-03-20
申请号:US10633893
申请日:2003-08-04
申请人: Toshiharu Mori , Hideki Kawai
发明人: Toshiharu Mori , Hideki Kawai
摘要: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 8% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 0 to 20% by weight, zero inclusive, of R2O compounds, where R=Li, Na, and K; and a total of 0 to 15% by weight, zero inclusive, of TiO2+ZrO2+LnxOy, where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5.
摘要翻译: 用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至8重量%,包括0的B 2 O 3 O 3; SiO 2 + 2 2 O 3 + B 2 O 3 3 SUB>占60 至90重量% 总共0至20重量%,包括0的R 2 O 2化合物,其中R = Li,Na和K; 并且总共0至15重量%,包括0的TiO 2 + ZrO 2 + Ln x O O y, 其中Ln x O O y表示至少一种选自镧系元素金属氧化物,Y 2 O 2 O 3的化合物 > 3,Nb 2 O 5,和Ta 2 O 5。
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公开(公告)号:US06645890B2
公开(公告)日:2003-11-11
申请号:US09822327
申请日:2001-04-02
申请人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
发明人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
IPC分类号: C03C1004
CPC分类号: C03C10/0045 , C03C3/062 , C03C3/085 , C03C19/00
摘要: A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
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公开(公告)号:US06645889B2
公开(公告)日:2003-11-11
申请号:US09822288
申请日:2001-04-02
申请人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
发明人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
IPC分类号: C03C1004
CPC分类号: C03C3/085 , C03C3/062 , C03C10/0045
摘要: A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
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公开(公告)号:US06642162B2
公开(公告)日:2003-11-04
申请号:US09822331
申请日:2001-04-02
申请人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
发明人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
IPC分类号: C03C1004
CPC分类号: C03C19/00 , C03C3/085 , C03C10/0045
摘要: A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
摘要翻译: 适合用作硬盘用基板的抛光玻璃盘介质基板,含有基板的硬盘及其制造方法。 含有玻璃成型原料的基材可以形成为杨氏模量为110以上。
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公开(公告)号:US06458729B1
公开(公告)日:2002-10-01
申请号:US09616030
申请日:2000-07-13
申请人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
发明人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
IPC分类号: C03C1008
CPC分类号: C03C10/0045 , C03C3/085
摘要: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis; from 50.5 to 52.5 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 4 to 10.6 wt % of TiO2.
摘要翻译: 用于记录盘基片的玻璃陶瓷组合物基本上以氧化物的重量百分数表示; SiO 2为50.5〜52.5重量%,Al 2 O 3为10〜30重量%,MgO为10〜30重量%,TiO 2为4〜10.6重量%。
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公开(公告)号:US06649549B2
公开(公告)日:2003-11-18
申请号:US09822286
申请日:2001-04-02
申请人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
发明人: Hideki Nagata , Hiroshi Yuki , Toshiharu Mori , Hideki Kawai , Kazuhiko Ishimaru
IPC分类号: C03C1004
CPC分类号: C03C10/0045 , C03C3/062 , C03C3/085
摘要: A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
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公开(公告)号:US06610620B1
公开(公告)日:2003-08-26
申请号:US09616041
申请日:2000-07-13
申请人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
发明人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
IPC分类号: C03C1008
CPC分类号: C03C10/0045 , C03C3/085
摘要: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 48 to 54.8 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 2.4 to 10 wt % of Li2O.
摘要翻译: 用于记录盘基片的玻璃陶瓷组合物基本上以氧化物的重量百分数表示,SiO 2为48至54.8重量%,Al 2 O 3为10至30重量%,MgO为10至30重量% 和2.4至10重量%的Li 2 O。
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公开(公告)号:US06596659B1
公开(公告)日:2003-07-22
申请号:US09616044
申请日:2000-07-13
申请人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
发明人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
IPC分类号: C03C1008
CPC分类号: G11B5/7315 , C03C3/085 , C03C10/0045
摘要: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 35 to 50 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 2.6 to 8 wt % of Li2O.
摘要翻译: 用于记录圆盘基材的玻璃陶瓷组合物基本上以氧化物的重量百分数表示,SiO 2为35〜50重量%,Al 2 O 3为10〜30重量%,MgO为10〜30重量% 和2.6〜8重量%的Li 2 O。
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公开(公告)号:US06583078B1
公开(公告)日:2003-06-24
申请号:US09616033
申请日:2000-07-13
申请人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
发明人: Hideki Nagata , Toshiharu Mori , Hiroshi Yuki , Hideki Kawai , Akira Sugimoto , Kazuhiko Ishimaru
IPC分类号: C03C1008
CPC分类号: C03C3/085 , C03C10/0045
摘要: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 47.5 to 58 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 0.1 to 2.8 wt % of ZrO2.
摘要翻译: 用于记录盘基片的玻璃陶瓷组合物基本上以氧化物的重量百分数表示,由47.5至58重量%的SiO 2,10至30重量%的Al 2 O 3,10至30重量%的MgO, 和0.1〜2.8重量%的ZrO 2。
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