公开(公告)号：US06718799B2

公开(公告)日：2004-04-13

申请号：US10358468

申请日：2003-02-04

申请人： Kazuaki Takagi ,  Kunio Hibino ,  Tomokazu Tokunaga ,  Fujio Okuyama ,  Minoru Onoda

发明人： Kazuaki Takagi ,  Kunio Hibino ,  Tomokazu Tokunaga ,  Fujio Okuyama ,  Minoru Onoda

IPC分类号： C03B1116

CPC分类号： C03B11/12 ,  C03B11/082 ,  C03B11/088 ,  C03B2215/41 ,  C03B2215/44 ,  C03B2215/46 ,  C03B2215/65

摘要： A glass material (4) is placed in a forming die including a pair of upper and lower dies (1, 2) and a control member (3) for controlling the space between the upper and the lower die, and then heated, softened, and molded by pressure into a glass substrate in the shape of a parallel plate. The amount of thermal contraction of the control member is smaller than that of the glass material. Therefore, the glass substrate is released from the die when cooled after molding. The present invention can provide a glass substrate that is excellent in smoothness and form accuracy of the surface, and that is suitable for recording media such as magnetic disks that are inexpensive and suitable for mass production.

摘要翻译： 将玻璃材料（4）放置在包括一对上模具和下模具（1）和成形模具（3）的成形模具中，用于控制上模和下模之间的空间，然后加热，软化， 并通过压力成型为平行板形状的玻璃基板。 控制构件的热收缩量小于玻璃材料的热收缩量。 因此，在成型后冷却时，玻璃基板从模具中脱模。 本发明可以提供一种玻璃基板，该玻璃基板的表面的平滑度和形状精度优异，适用于记录便宜且适合批量生产的诸如磁盘的介质。

公开(公告)号：US06539750B1

公开(公告)日：2003-04-01

申请号：US09719695

申请日：2000-12-14

申请人： Kazuaki Takagi ,  Kunio Hibino ,  Tomokazu Tokunaga ,  Fujio Okuyama ,  Minoru Onoda

发明人： Kazuaki Takagi ,  Kunio Hibino ,  Tomokazu Tokunaga ,  Fujio Okuyama ,  Minoru Onoda

IPC分类号： C03B1116

CPC分类号： C03B11/12 ,  C03B11/082 ,  C03B11/088 ,  C03B2215/41 ,  C03B2215/44 ,  C03B2215/46 ,  C03B2215/65

摘要： A glass material (4) is placed in a forming die including a pair of upper and lower dies (1, 2) and a control member (3) for controlling the space between the upper and the lower die, and then heated, softened, and molded by pressure into a glass substrate in the shape of a parallel plate. The amount of thermal contraction of the control member is smaller than that of the glass material. Therefore, the glass substrate is released from the die when cooled after molding. The present invention can provide a glass substrate that is excellent in smoothness and form accuracy of the surface, and that is suitable for recording media such as magnetic disks that are inexpensive and suitable for mass production.

摘要翻译： 将玻璃材料（4）放置在包括一对上模具和下模具（1）和成形模具（3）的成形模具中，用于控制上模和下模之间的空间，然后加热，软化， 并通过压力成型为平行板形状的玻璃基板。 控制构件的热收缩量小于玻璃材料的热收缩量。 因此，在成型后冷却时，玻璃基板从模具中脱模。 本发明可以提供一种玻璃基板，该玻璃基板的表面的平滑度和形状精度优异，适用于记录便宜且适合批量生产的诸如磁盘的介质。