Negative image forming process in o-quinone diazide layer utilizing laser beam

A negative-working image forming process which comprises uniformly exposing a photosensitive material comprising a support having thereon a sensitive layer comprising an admixture of (i) an O-quinonediazide compound and (ii) a second compound selected from the group consisting of diazo dyes, anthraquinone dyes, quinoneimine dyes, methine dyes, copper phthalocyanine dyes and dyes having amino groups, alkylamino groups or hydroxyl groups as an auxochrome, to actinic radiation which is able to convert the o-quinonediazide compound to the corresponding indenecarboxylic acid compound, and subsequent to said uniformly exposing imagewise exposing said exposed photosensitive material to a laser beam to thereby render the indenecarboxylic acid compound of the imagewise exposed areas converted to the corresponding indene compound and developing with an alkaline developing solution to dissolve out the unexposed area to the laser beam, wherein said second compound reduces the rate of dissolution of the laser exposed areas in the developing solution by converting the indenecarboxylic acid to the corresponding indene compound, whereby said image results.