| 摘要 |
PROBLEM TO BE SOLVED: To improve dissolving efficiency and stabilize photographic performance by specifying the transport time in a specific relation among the surface temperature of a gelatinous material when the material is taken out of a storage, the time from the taking out to the charge of the material into a dissolving/mixing device, and the atmosphere temperature during the transportation. SOLUTION: First, the highest surface temperature of a plurality of gelatinous materials is kept lower than the melting point. Second, the equation of the relation among the temperature K1 of the gelatinous material when it is taken out from a preservation tank 10, the time T from the taking out to the charge of the material into a dissolving/mixing device 30, and the temperature K2 of the atmosphere in which the gelatinous material is transported, is given by t= (ρ.Cp.V)/(U.A)}.In.(k1-K 2)/(K1-MP). The material is transported so that the transport time t1 satisfies t>t1. In the equation,ρis the specific gravity of the gelatinous material and the container, Cp is their specific heat, V is the volume of the gelatinous material, U is the overall heat transfer coefficient of the material and the container, A is the surface area of the material and the container. In is logarithm, MP is the dissolving temperature of the material.
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