GLASARTIGER FILM UND DIESEN VERWENDENDES, IM WAERMEVERFAHREN ARBEITENDES OPTISCHES AUFNAHMEMEDIUM.

摘要

A vitreous film containing, e.g., 30 - 90 wt. % of Sn, 1 - 20 wt. % of P, 0,1 - 20 wt. % of Pb, 2 - 30 wt. % of 0 and 5 - 35 wt. % of F is formed by vapor deposition on a substrate such as glass, metal, plastic or ceramic. A light-absorbing substance can be incorporated in the vitreous film to provide a recording layer for a heat-mode optical recording medium capable of causing decoloration or formation of pits on irradiation with a laser beam.