| 摘要 |
PROBLEM TO BE SOLVED: To improve holding property of a latent image and radiographic sensitivity by incorporating a supporting body coated with a layer of a specified silver halide emulsion and a specified compd. SOLUTION: This non-spectrally sensitized radiographic product contains at least 50 mg/dm2 silver and has no color sensitivity, and is designed to be exposed to ionizing radiation having energy at least equal to 40 keV. At least one surface of the product has a supporting body coated with a silver halide emulsion layer in which at least 50% of particles in the emulsion are planer particles. The product contains at least 0.05 mmol/mol Ag of the compd. expressed the formula. In the formula, R1, R2 are hydrogen atoms, 1-5C alkyl groups or benzyl groups, or the like R3, R4 are hydrogen or 1-5C alkyl groups or atoms necessary to form a 4 to 6-member heterocycle when they are bonded.
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