MANAGEMENT IN FILM PROCESSING : Process Properties of Various Types of Film and of Various Type Solutions

The management work in the film processing recently has become much more troublesome, because a largenumber of new types of film and of new type solutions are being rapidly introduced on the market. We have carried out a study on process properties of various types of film and various type solutions. A calibrate sensitometer was used for giving standard exposure for the various types of film. Each series of one type film consisting of 200 sheets of 10×12'size were processed in one type of developing solution, without an additional supply of the solution. Changing the process temperature within a range of 28℃ to 40℃, alteration of the density of the exposed film was measured. In another series, using various types of film, we made a degradation curve for each solution. The"TMG"film showed little change either in the temperature process change or in the degradation of the solution remarkably comparably to the alterations observed on other types of film. The"RD-III"solution showed little degradation for any type of film. This experimental condition is to be different from the process running daily, where a solution has to be much more degradated for a longer period of time. Further studies should be made under such daily conditions.