| 摘要 |
PURPOSE: To form an image having high image quality, free from unevenness and not causing peeling by using a film composed of essentially syndiotactic polystyrene and having a specified thickness as a substrate. CONSTITUTION: This relief image forming material uses a syndiotactic polystyrene-based film of 15-300μm thickness as the substrate and has a photosensitive layer on at least one side of the substrate. The syndiotactic polystyrene- based film is formed by working a styrene polymer whose principal chain is chiefly a racemic chain or a compsn. contg. the polymer into a film. The monomer of the polymer is, e.g., styrene, alkylstyrene, halogenated alkylstyrene, alkoxystyrene or vinylbenzoic ester.
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