| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method by which temperature control of high precision can be attained without being influenced by a position of a metallic mold, distortion and warp due to residual stress in a formed substrate can be suppressed to the minimum and glass substrate excellent in flatness can be obtained and to provide an apparatus for manufacturing a glass substrate. <P>SOLUTION: The apparatus is provided with upper and lower metallic molds (1) respectively having a mold surface, upper and lower induction coils (8U, 8L) disposed integrally with the respective upper and lower metallic molds, a press forming means for pressurizing a glass raw material between the mold surfaces by moving at least one among the upper and lower metallic molds and respective high frequency power sources 11 connected with respective upper and lower induction coils. Further a heating process is performed by performing induction-heating of the metallic mold by making alternating current flow through the upper and lower induction coils disposed integrally with the respective upper and lower metallic molds. <P>COPYRIGHT: (C)2003,JPO</p> |
