| 摘要 |
PURPOSE:To improve the storage stability by forming a layer formed by scattering a substance expanded by heating whose deformed state is maintained by succeeding cooling into a rubber elastic body onto a light reflecting layer so as to eliminate the deterioration in the recording characteristic due to oxidation and corrosion. CONSTITUTION:A light reflecting layer 6 is formed on the base 5 and the layer 9 formed by scattering the substance 7 which is expanded by heating and whose deformed state is maintained by the succeeding cooling in the rubber elastic body 8 is formed on the light reflecting layer 6. As the base 5, an organic such as a resin is used or a metallic plate whose surface is in the mirror surface state while using itself as the base 5 and the light reflecting layer 6 in common is used. Since modification such as oxidation or corrosion does not take place different from a metallic thin film, the deterioration in the recording characteristic is not caused and the storage stability is improved. |
