| 摘要 |
PURPOSE:To obtain a photo-recording medium having an excellent moist-proof performance and a long term stability, by forming a zinc sulfide thin film layer or layers onto one or both faces of a photo-recording film provided on a transparent macromolecular substrate. CONSTITUTION:A photo-recording layer 3 is provided onto a transparent macromolecular substrate. Zinc sulfide thin film layers 2, 4 are formed onto one or both faces of the photo-recording film. Said zinc aulfide thin film layers 2, 4 are formed through a vacuum thin film forming method including vacuum deposition, ion plating, spattering, etc. The thin film layer may be formed only on one face of the recording film 3, but a high effect can be achieved when the films 3 are formed on both faces of the recording film 3. Since the zinc sulfide thin film layers 2, 4 have a gas barrier performance, an excellent transparency, a chemical stability and a mechanical strength, the recording film can be protected from deterioration caused through contact with steam or oxygen when the zinc sulfide thin film layers 2, 4 are employed as the protective films for the recording film. |
