SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL

摘要

PURPOSE:To provide the titled material which has high sensitivity and excellent granular characteristic and sharpness and decreases the fluctuation of performance with heat and humidity by incorporating a cyclic ether compd. into one layer of emulsion layers and incorporating a core/shell type silver halide emulsion into one layer thereof. CONSTITUTION:At least one layer of the emulsion layers contains the cyclic ether compd. and at least one layer of the emulsion layers contains the core/ shell type silver halide emulsion. The 3-6-membered cyclic ether compd. is more preferable and the number of the oxygen atoms incorporated into one ring is preferably 1-2 pieces. The cyclic ether compd. consisting of the 3-membered ring is more preferably the compd. expressed by the formula. The core/ shell type silver halide emulsion particles used have the particle structure constituted of >=2 layers having different contents of silver iodide and the silver iodobromide in which the layer (core) having the highest content of the silver iodide is except the extreme surface layer (shell) is more preferable.