Photographic processing method and apparatus
AssigneeEastman Kodak Company
InventorJohn R. Fyson
Life of this patent
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Abstract
A photographic processing machine having at least two processing tanks for holding different processing solutions and a removable container (100) containing working strength processing solutions and a washing-stabilizing solution in separate sub-containers (10-50) therein from which the processing tanks are fed, wherein the last sub-container that feeds the washing-stabilizing tank comprises electrodes (70 and 80) and, in that when the resistance falls to a predetermined value, an indicator means is activated signalling the necessity for changing the processing solution container.
Claims11
In a method of processing imagewise exposed photographic materials in a processing machine comprising at least two processing tanks including a final stabilizing and washing tank, and a removable container containing at least one working strength solution with processing reagent(s) therein, and a final stabilizing and/or washing solution in separate sub-containers from which the processing tanks are fed,
- the improvement wherein the sub-container that contains said final stabilizing and/or washing solution comprises a means for (a) detecting the amount of the processing reagent(s) in said final stabilizing and/or washing solution and (b) signalling the need for changing said removable container.
In a photographic processing apparatus comprising at least two processing tanks for holding processing solutions and a removable container containing at least one working strength processing solution and a stabilizing and/or washing solution in separate sub-containers therein from which the processing tanks are fed,
- the improvement wherein the sub-container that contains said stabilizing and/or washing solution comprises a means for (a) detecting the amount of the processing reagent(s) in said stabilizing and/or washing solution and (b) signalling the need for changing said removable container.
In a photographic processing solution cartridge comprising a container containing at least one working strength processing solution and a stabilizing-washing solution in separate sub-containers therein,
- the improvement wherein the last sub-container containing the stabilizing-washing solution comprises an electrical detector.
Dependencies are inferred from the claim text.