A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a hydrophilic binder and a dye releasing redox compound represented by the following general formula (I): ##STR1## wherein G represents --OR.sup.1 or --NHR.sup.2 ; R.sup.1 represents a hydrogen atom or a hydrolyzable group; R.sup.2 represents a hydrogen atom or an alkyl group containing from 1 to 50 carbon atoms; Z represents an image forming dye group; A represents an atomic group necessary for forming an aromatic ring; Ball represents an organic immobilizing group on the aromatic ring, and when two Ball groups exist, they may be the same or different from each other; m represents an integer of 1 or 2; X represents a divalent organic group containing from 1 to 8 atoms and X with a nucleophilic group (Nu) is capable of forming a 5- to 12-membered ring together with an electrophilic center (the carbon atom marked with *) which is formed by oxidation; Nu represents a nucleophilic group; and n represents an integer of 1 or 2. The heat-developable color photographic material can easily provide a clear and stable color image by imagewise exposure to light and a heat-development procedure. A method of forming a color image using the heat-developable color photographic material is also disclosed.
一种热显影彩色感光材料,包括支撑物,其上至少具有一种光敏
银卤化物、一种亲
水性粘合剂以及一种由下列通式(I)表示的
染料释放氧化还原化合物:##STR1## 其中,G代表--OR.sup.1或--NHR.sup.2;R.sup.1代表氢原子或可
水解基团;R.sup.2代表氢原子或含有1至50个碳原子的烷基;Z代表成像
染料基团;A代表必要的原子基团以形成芳香环;Ball代表芳香环上的有机固定基团,当存在两个Ball基团时,它们可以相同或不同;m代表1或2的整数;X代表含有1至8个原子的二价有机基团,X与亲核基团(Nu)一起能够形成一个5至12个成员环,该环与由氧化形成的电子亲合中心(标有*的碳原子)一起;Nu代表亲核基团;n代表1或2的整数。该热显影彩色感光材料可以通过成像曝光和热显影程序轻松提供清晰稳定的彩色图像。还公开了一种使用该热显影彩色感光材料形成彩色图像的方法。