Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
  • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/407—Development processes or agents therefor
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/44—Regeneration; Replenishers

Definitions

• the invention relates to a process for the continuous processing of imagewise exposed, color photographic materials based on high chloride silver halide emulsions with at least the processing steps (a) color development, (b) bleaching and fixing or bleach-fixing, (c) washing or stabilizing and (d) drying, the Color developer is regenerated with a regeneration rate of less than 160 ml / m2.
• the Kodak EP-2 process used regeneration rates of 325 ml / m2.
• a regeneration rate of 80 ml / m2 was not realized in this system and would have resulted in a KBr concentration of around 2.8 g / l.
• the concentration of KCl in the RA 4 process is usually between about 0.8 and 2 g / l at a regeneration rate of 160 ml / m2, and between about 1.6 and 4 g / l at a regeneration rate of 80 ml / m2, whereby the lower value results from the photographic process of reducing silver chloride by the developer.
• the object of the present invention was to maintain the activity of the development despite reduced regeneration rates and thus increased halide concentrations and thus to obtain type-sensitive sensitometric results in the specified target time.
• High-chloride silver halide emulsions are to be understood as those whose silver halides consist of at least 90 mol% of AgCl, preferably 95 mol% of AgCl.
• the difference to 100 mol% can be AgBr and / or AgI.
• a number of methods are available for eliminating or significantly reducing the diffusion layer adhering to the interface of the material, e.g. guiding the material over wiping lips, through squeezing rollers, over rotating foam rollers, preferably rotating counter to the material transport, or repeatedly deflecting the material over a large number of transport shafts, the deflection angle from the running direction being in particular 5 to 85 °.
• the material for removing or reducing the adherent diffusion layer in the developer is preferably passed through one or more pairs of rollers, each of which exerts a pressure of 50 to 250 p / cm 2 on the material or, after the developer bath but before the next bath, is passed through one or more pairs of rollers , which exert a pressure of 50 to 250 p / cm2 on the material and which are exposed to water.
• the number of pairs of rollers is preferably 1 to 5; in particular 20 to 100 ml water / m2 material are applied. Both measures can also be used together.
• a commercial color paper for processing in the RA-4 process the silver halide emulsions of which contain AgCl 0.995 Br 0.005 , was processed as follows: Developer: 45 s, 35 ° C Fix bleaching: 45 s, 35 ° C Water: 4 x 22.5 s, 30 to 35 ° C dry
• the regeneration rate of the developer was 160 ml / m2.
• the fog, gamma 1, gamma 2 and maximum density were determined. The results are shown in Table 1.
• Example 2 The procedure was as in Example 2, but the temperature of the developer was raised to 38 ° C.
• Example 2 The procedure was as in Example 2, but the material after leaving the developer bath was passed through two pairs of rollers, the rollers of which touched the front and rear of the material and exerted a pressure of 150 p / cm 2 on the material. 50 ml water / m2 material was applied to the material between the two pairs of rollers.
• Example 2 The procedure was as in Example 2, but the material in the developer bath passed through 5 pairs of rollers, all of which exerted a pressure of 150 p / cm 2 on the material.
• Example 5 The procedure was as in Example 5, but the material additionally passed through after leaving the developer bath 2 pairs of rollers according to Example 4, 50 ml of water / m2 of material being applied to the material between the two pairs of rollers.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6474423

Family Applications (1)

Country Status (3)

Citations (6)

• 1992
  • 1992-12-04 DE DE19924240869 patent/DE4240869A1/de not_active Withdrawn
• 1993
  • 1993-11-22 EP EP93118749A patent/EP0600338A1/fr not_active Withdrawn
  • 1993-11-30 JP JP32330193A patent/JPH06208212A/ja active Pending

Patent Citations (6)

Non-Patent Citations (2)

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