PROCESS FOR PRODUCING PHOTOGRAPHIC MATERIALS

• Main Authors: TATSUTA S,JA, UENO W,JA
• Format: Patent
• Language: English
• Published: 24.09.1974
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; AUXILIARY PROCESSES IN PHOTOGRAPHY; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; ELECTROGRAPHY; GENERAL PROCESSES OF COMPOUNDING; HOLOGRAPHY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES; PHOTOGRAPHY; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

There is disclosed a process for producing a photographic material using a polystyrene film as a support by subjecting a biaxially drawn, surface-roughened polystyrene film to a high frequency electrodeless discharge in a vacuum at a frequency of 13.56 MHz, and then coating an aqueous emulsion or suspension containing gelatin as a binder on the film. The bond strength between the film support and the coating proves superior to those materials in the prior art.