PRODUCTION OF OPTICAL DISK

摘要

PURPOSE:To obtain the title stabilized optical disk having a low noise level and with less ageing deterioration by forming the film of a recording layer contg. a specified element while intermittently irradiating light. CONSTITUTION:A transparent substrate 1 with a transparent insulating layer formed on the surface is rotated by a motor and intermittently irradiated with a flash lamp 7. A recording layer contg. chalcogen through vaporization sources 8 and 9 and by sequential crystallization at every irradiation. The crystal grains are not coarsened by the sequential crystallization resulting from intermittent irradiation and made uniform. Accordingly, a stabilized optical disk having a low noise level and with less ageing deterioration can be obtained.