| 摘要 |
Method of manufacturing an optical reading disc, in particular for producing and fixing the recording of a coded datum in a sensitive resin layer applied to a transparent substrate of inorganic material, such as glass in particular, the resin layer preferably being covered on the outside by a thin protective layer. �<??>According to the invention, this method is characterised in that it consists in recording, in a manner known per se, the signal corresponding to the coded datum by localised activation of the sensitive layer (3) through the substrate (2), and in then removing the protective layer (4), in etching the substrate through the activated zones of the sensitive layer acting as an etching mask, in lifting off the remainder of this sensitive layer, in coating the etched substrate with a thin reflective metallic layer (9) and lastly in depositing a final outer protective layer (10) on the metallic layer. �<??>The invention also relates to the optical discs obtained by this method. �<IMAGE>� |
