| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a cover glass blank for electronic devices suitable for small-volume production in great varieties, and a method for producing a cover glass for electronic devices. <P>SOLUTION: The method for producing a cover glass blank for an electronic device includes a forming step of performing press forming of a lump of molten glass using a pair of dies, wherein, on the basis of relation between a temperature difference at opposite positions of the pair of dies used in press forming of the molten glass and the flatness of glass blank obtained after the press forming, the temperature difference between the pair of dies, with which the flatness required for a cover glass for an electronic device can be achieved, is determined, and press forming is performed while the temperature of the pair of dies is controlled so that the temperatures of the pair of dies fall within the determined temperature difference. <P>COPYRIGHT: (C)2013,JPO&INPIT |
