Photographic material comprising a supported or self-supporting binder layer incorporating a photoradical precursor compound in operative relationship with an image-forming precursor compound which is capable of taking part in image formation by reaction with the photoradicals formed by photoexposing said photoradical precursor, said image-forming compound being for example a reducing compound for forming a print-out image or being an ethylenically unsaturated compound capable of free-radical addition polymerization, characterized in that the photoradical precursor compound is a di- or tri(2,3-aromatically substituted indolyl) compound being free from Zerewitinoff active hydrogen.
摄影材料,包括一个支撑或自支撑的粘合剂层,该粘合剂层包含一个光致
抗坏血酸前体化合物,该化合物与一个图像形成前体化合物有作用关系,该图像形成前体化合物能够通过与通过光曝光所述光致
抗坏血酸前体形成的光致
抗坏血酸反应而参与图像形成,所述图像形成化合物例如是一个用于形成打印输出图像的还原化合物,或者是一个能够进行自由基加成聚合的
乙烯不饱和化合物,其特征在于所述光致
抗坏血酸前体化合物是一个不含 Zerewitinoff 活性氢的二或三(2,3-芳香取代的
吲哚基)化合物。