Silver halide emulsion and photographic light-sensitive material using the same

摘要

An emulsion contains tabular silver halide having a thickness of less than 0.5 mu m, a diameter of 0.3 mu m or more, and a grain diameter/thickness ratio of 2 or more. The tabular silver halide grains account for at least 50% of a total projected area of all silver halide grains. 50% (number) or more of the tabular silver halide grains include 10 or more dislocations per grain. A relative standard elevation of silver iodide content of individual tabular silver halide 30% or less. This light-sensitive silver halide emulsion has a high sensitivity and a high gamma improved in photographic properties and in rate of development. Each tabular silver halide grain may internally have a portion where a silver iodide content is higher than that of the surface of the grain. When the light-sensitive silver halide emulsion is added to a silver halide emulsion layer, a photographic light-sensitive material having a high sensitivity and a high gamma and improved in photographic properties and in rate of development can be obtained.