ACTIVATING METHOD FOR OPTICAL RECORDING FILM

摘要

PURPOSE:To form pits without residual matter therein and with decreased rim noise by adsorbing a gaseous photosetting resin monomer on a grooved substrate, providing a photoset thin film between the substrate and recording film and irradiating laser light thereto to make recording. CONSTITUTION:The gaseous photosetting resin monomer is adsorbed on one face of the substrate 1 in an optical recording method to from the pits on the recording film 3 on the substrate 1 by irradiating the laser light thereto. UV rays are irradiated to the adsorptive layer from the opposite side of the substrate 1 to photoset the layer. The recording film 3 is formed on the cured film 2. The explosive splashing of the melt in the part irradiated with the laser of the recording film as in the case of using nitrocellulose as the active layer is obviated. The surface roughening of the medium surface is thereby decreased and the incease in the noise level by the rim noise is not admitted even if the pits are formed by recording.