| 摘要 |
PURPOSE:To obtain a material having high sensitivity, a wide exposure range, superior graininess, sharpness and shelf stability and hardly causing fog by safelight by specifying gamma formed by a point having 0.05 optical density and a point having 0.30 optical density and gamma formed by the point having 0.50 optical density and a point having 1.5 optical density. CONSTITUTION:On the characteristic curve of a silver halide photographic sensitive material for X-rays on an orthogonal coordinate system with optical density (D) and the exposure (log E) having the same unit length as the coordinate axes, gamma (gamma1) formed by a point having 0.05 optical density and a point having 0.30 optical density is regulated to 0.50-1.00, and gamma (gamma2) formed by the point having 0.50 optical density and a point having 1.5 optical density is regulated to 2.5-3.5. At least part of the silver halide particles in the sensitive material have 0.5-10mol% average silver iodide content and silver iodide-rich parts having >=20mol% silver iodide content are present in the particles. The sensitive material has one emulsion layer contg. at least one kind of compound selected among compounds represented by formulae I, II, III. |
