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Patent Searching and Data


Title:
DIRECT POSITIVE SILVER HALIDE COLOR PHOTOGRAPHIC MATERIAL
Document Type and Number:
Japanese Patent JPS5779940
Kind Code:
A
Abstract:

PURPOSE: To obtain a positive imae superior in sensitivity, gradation, etc., by providing a core/shell type intenal latent image type silver halide emulsion layer having a blue sensitive core containing a sensitizing dye having 465W495nm photosensitivity maximum wavelengths, and a shell having a specified silver halide composition.

CONSTITUTION: The direct positive photographic material of this invention has a core/shell type internal latent image type silver halide emulsion layer consisting of a blue-sensitive core containing a sensitizing dye having 465W495nm photosensitivity maximum wavelengths, and a shell having a silver halide composition containing ≥75mol% AgCl among silver chlorobromoiodide, thus permitting a photographic material suitable for copying, high in sensitivity and contrast, and good in development stability to be obtained.


Inventors:
KOUNO JIYUNICHI
Application Number:
JP15668080A
Publication Date:
May 19, 1982
Filing Date:
November 06, 1980
Export Citation:
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Assignee:
KONISHIROKU PHOTO IND
International Classes:
G03C7/00; G03C1/485; G03C7/26; (IPC1-7): G03C7/26