| 摘要 |
A photographic material and a process for the formation of non-fading images upon exposure to actinic light comprising a light-sensitive layer formed of a photochromic compound and a photo-hardening polymeric system is described. The photochromic compound has the formula: X and X'' each represents hydrogen, chlorine, bromine, nitrile, acetyl, carboxy, hydroxy, nitro or methoxy, X' represents hydrogen, chlorine, bromine, nitrile, acetyl, carboxy or nitro, and X'X'' represents hydrogen, chlorine, bromine or nitro.
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