Processing solution for use as photographic developer bath and replenisher therefor

Claim 2

An aqueous photographic processing solution useful as a photographic developer bath for automatic processing of X-ray film and as a replenisher therefor, consisting essentially of, per liter: ______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8g Hydroquinone or a derivative thereof 15 to 35g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmol Alkaline material and buffer to provide a pH at 25° C of 10.0 + 0.8 - 0.5. ______________________________________

Claim 3

The processing solution according to claim 1, which contains no bromide ion.

Claim 4

The processing solution according to claim 1, wherein the organic anti-foggant is one or more members selected from the group consisting of a benzimidazole, a benzotriazole, a tetrazole, a thiazole and an anthraquinone sulfonic acid salt.

Claim 5

The processing solution according to claim 1, which contains one or more adjuvants selected from the group consisting of gelatin hardening agents, aerial oxidation restrainers, sequestering agents, surfactants and dyes.

Claim 6

The automatic processing of exposed photographic silver halide X-ray film, wherein the imagewise exposed X-ray film is developed in a photographic developer bath comprising a photographic developer, an alkaline material and a buffer system to maintain the pH of the developer bath at a desired value, an organic anti-foggant and water, the developed X-ray film is fixed, washed and dried, and the developer bath is replenished by a replenisher solution to maintain constant the photographic properites of the developer bath during processing of a large quantity of exposed X-ray film, the improvement which comprises using a processing solution as both the developer bath and the replenisher solution consisting essentially of, per liter: ______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8 g Hydroquinone or a derivative thereof 15 to 36g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmols Alkaline material and buffer to provide a pH at 25°C of 10.0 + 0.8 - 0.5 ______________________________________ ______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8g Hydroquinone or a derivative thereof 15 to 35g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmol Alkaline material and buffer to provide a pH at 25° C of 10.0 + 0.8 - 0.5. ______________________________________

Claim 7

The automatic processing of exposed photographic silver halide X-ray film, wherein the imagewise exposed X-ray film is developed in a photographic developer bath comprising a photographic developer, an alkaline material and a buffer system to maintain the pH of the developer bath at a desired value, an organic anti-foggant and water, the developed X-ray film is fixed, washed and dried, and the developer bath is replenished by a replenisher solution to maintain constant the photographic properites of the developer bath during processing of a large quantity of exposed X-ray film, the improvement which comprises using a processing solution as both the developer bath and the replenisher solution consisting essentially of, per liter: ______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8 g Hydroquinone or a derivative thereof 15 to 36g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmols Alkaline material and buffer to provide a pH at 25°C of 10.0 + 0.8 - 0.5 ______________________________________ ______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8g Hydroquinone or a derivative thereof 15 to 35g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmol Alkaline material and buffer to provide a pH at 25° C of 10.0 + 0.8 - 0.5. ______________________________________

Claim 8

The process according to claim 5, wherein the processing solution contains no bromide ion.

Claim 9

The process according to claim 5, wherein the organic anti-foggant is one or more members selected from the group consisting of a benzimidazole, a benzotriazole, a tetrazole, a thiazole and an anthraquinone sulfonic acid salt.

Claim 10

The process according to claim 5, wherein the processing solution contains one or more adjuvants selected from the group consisting of gelatin hardening agents, aerial oxidation restrainers, sequestering agents, surfactants and dyes.