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    • 5. 发明专利
    • SILVER HALIDE COLOR REVERSAL PHOTOGRAPHIC MATERIAL
    • JPS6218551A
    • 1987-01-27
    • JP15786585
    • 1985-07-17
    • FUJI PHOTO FILM CO LTD
    • ISHIMARU SHINGO
    • G03C7/26G03C1/005G03C5/50G03C7/30
    • PURPOSE:To enhance sharpness, graininess, and sensitivity by incorporating silver halide grains chemically sensitized in the inside of each particles in a silver halide emulsion layer same in color sensitivity as that containing flat silver halide grains but lower in photosensitivity. CONSTITUTION:One of the silver halide emulsion layers formed on a support contains the flat silver halide grains having an accept ratio of >=5 amounting to at least 50%, especially preferably, >=90% of the total projection areas of the silver halide grains. The aspect ratio of the flat silver halide grains has, preferably, 5-8. Another silver halide emulsion layer same in color sensitivity as said layer but lower in photosensitivity than it is formed and contains chemically sensitized silver halide grains in the inside of each grain, and these silver halide grains can be prepared by chemically sensitizing core grins, and adding silver ions and halogen ions to precipitate them on these core grains, or adding fine grains clearly smaller in size than the core grains and ripening the core grains by the Oswald ripening method.
    • 10. 发明专利
    • COLOR REVERSAL IMAGE FORMING METHOD
    • JPH02272450A
    • 1990-11-07
    • JP9395789
    • 1989-04-13
    • FUJI PHOTO FILM CO LTD
    • DEGUCHI HISAYASUISHIMARU SHINGOSAKAGAMI MEGUMI
    • G03C5/50G03C7/20G03C7/305
    • PURPOSE:To faithfully reproduce hues without lowering saturation and to obtain the images which are small in color balance change to various kinds of photographing light sources by using the color reversal photosensitive material having silver halide emulsion layers (donor layers) contg. a means which can impart an interimage effect at the time of a black and white development without forming image dyes. CONSTITUTION:There are the following examples as the means for imparting the interimage effect at the time of the black and white development: (1) The silver iodide content in the silver halide emulsion of the donor layer is a silver iodobromide emulsion or silver chloroiodobromide emulsion of >=2.5mol% silver iodide content and this silver iodide content is higher by at least 2.0% the silver iodide content in the silver halide emulsion of at least one layer of the red sensitive emulsion layers. (2) The donor layer contains the compd. expressed by general formula [I]. (3) The donor layer contains the compd. expressed by general formula [II] and [III]. (4) The donor layer contains a diffusive 4-thiazoline-2-thion compd. or N-subts. 4-thiazoline-2-thion compd. The max. color formation density is required to be