Process for forming direct positive color image comprising the use of bleach accelerators

A process for forming a direct positive color image comprising (i) exposing a photosensitive material comprising, on a support, at least one photographic emulsion layer containing previously unfogged internal latent image-type silver halide grains and a color image-forming coupler, (ii) color-developing the material with a color developer having a pH of 11.5 or lower in the presence of a nucleating agent, and then (iii) processing the material with a processing solution having a bleaching effect, wherein said process a bleaching accelerator is incorporated into a bath containing the processing solution having the bleaching effect, or into a pre-processing bath, or said bleaching accelerator is incorporated into the photosensitive material, and wherein the bleaching accelerator is a compound selected from those represented by the following general formulae:

• ##STR22## wherein R.sub.1 and R.sub.2 may be the same or different and each represents a hydrogen atom or a substituted or unsubstituted lower alkyl group or acyl group and n represents an integer of 1 to 3 and R.sub.1 and R.sub.2 may be combined to form a ring, ##STR23## wherein R.sub.3 and R.sub.4 have the same meanings as those of R.sub.1 and R.sub.2 in general formula (I), n represents an integer of 1 to 3, and R.sub.3 and R.sub.4 may be combined to form a ring, ##STR24## wherein R.sub.5 represents a hydrogen atom, halogen atom, amino group, substituted or unsubstituted alkyl group, or amino group having an alkyl group, ##STR25## wherein R.sub.6 and R.sub.7 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted alkyl group, substituted or unsubstituted phenyl group, or substituted or unsubstituted heterocyclic group, R.sub.8 represents a hydrogen atom or a substituted or unsubstituted lower alkyl group, and R.sub.9 represents a hydrogen atom or carboxyl group, and ##STR26## wherein R.sub.10, R.sub.11 and R.sub.12 may be the same or different and each represents a hydrogen atom or lower alkyl group, R.sub.10 and R.sub.11 or R.sub.12 may be combined to form a ring, and X represents a substituted or unsubstituted amino group, sulfonic acid group or carboxyl group.