METHOD AND MEDIUM FOR OPTICAL INFORMATION RECORDING

摘要

PURPOSE:To make manufacture easy and to improve the time stability, by taking a recording layer the reflection factor of which is increased through the irradiation of a recording laser light as an organic substance layer scattered with metallic particles. CONSTITUTION:A metal included in an optical information recording layer is scattered in an organic substance as minute colloidal particles, and the reflectance can be increased through the combination of minute particles through the removal of organic substance due to heating. As a preferable metal, silver is the best in using gelatin as dispersion medium with about 300Angstrom of particle diameter. Through the irradiation of a recording laser light 3, a recording part 4 increased with the reflection factor without almost causing physical change to a metallic minute particle dispersion layer 2 and a recording part 5 increased with the reflection factor accompanied with depression are produced. The reproduction of recording is performed by comparing the increment of the reflection factor of the said recording parts with that of a non-recording part 6.