Investigation of effects of pH, ionic strength, and drying temp. on dimensional stability of film

An investigation into the effect effects of chemical changes made in a processing system and drying temperature [with respect] to dimensional displacements of a final image was carried out using Eastman Kodak\u27s # 8430 aerial duplicating film. Image displacements over both long and short distances were measured. Over approximately 162 mm., drying at a temperature equal to that of processing, 70°F, resulted in no significant special displacement of the final image, while drying at higher temperatures prodded correspondingly larger displacements. A pH system between bathe similar to that found in a conventional process resulted in dimensional displacements, over the short distance or approximately 90 microns, less that processing systems employing gradually increasing or equal pH\u27s throughout the baths. The salt concentrations investigated produced no significant effect on dimensional displacements

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