Abstract Photographic silver halide developing agents which are amino hydroxy cycloalkenone compounds having a five or six member cycloalkene nucleus provide increased development activity, e.g. reduced development time, and provide low-colored oxidation products without undesired sensitometric properties in developing a latent image in a photographic element. These developing agents can be employed in photographic elements and/or processing compositions. They can be employed in combination with other silver halide developing agents and addenda employed in photographic elements and/or processing compositions. They are suitable, for instance, in elements for dry processing with heat, and/or processing solutions and/or photographic emulsions.
A photographic element as in claim 1 wherein said amino hydroxy cycloalkenone silver halide developing agent is 2-hydroxy-3-morpholino-2-cyclohexenone, 2-hydroxy-3-piperidino-2-cyclohexenone, or 2-hydroxy-3-dimethylamino-2-cyclohexenone.
Claim 2
Dependent Claim
47 words
In a photographic product comprising in combination (a) a photographic element Comprising photographic silver halide, (b) a processing composition containing a silver halide solvent and (c) an image receiver, the improvement comprising in said photographic product an amino hydroxy cycloalkenone silver halide developing agent having the formula:
Claim 3
Dependent Claim
23 words
A photographic product as in claim 3 wherein said developing agent is present in said processing composition and comprises 2-hydroxy-3-morpholino-2-cyclohexenone, 2-hydroxy-3-piperidino-2-cyclohexenone, or 2-hydroxy-3-dimethylamino-2-cyclohexenone.