Granulated solid processing agent for silver halide photographic material and producing method of the same
AssigneeFuji Photo Film Co., Ltd.
InventorsKazuaki Yoshida, Hiroki Ide
Life of this patent
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Abstract
A granulated solid processing agent for a silver halide photographic material which is a core/shell type spherical granule comprising an internal nucleus and layer structure of one or more layers coating the internal nucleus, and the critical relative humidity of the internal nucleus is 70% or less.
Claims7
A granulated solid processing agent for a silver halide photographic material, wherein the granule is a core/shell spherical granule comprising an internal nucleus and layer structure of three or more layers coating said internal nucleus, wherein
- the critical relative humidity of said internal nucleus is 70% or less,
- the internal nuclei have an average particle diameter of from 1 to 20 mm, and
- granules having a particle diameter of 0.5 mm or less account for 10 mass % or less based on the entire mass of the granulated solid processing agent.
A method for producing a granulated solid processing agent for a silver halide photographic material, wherein the granule is a core/shell spherical granule comprising an internal nucleus and layer structure of three or more layers coating said internal nucleus, wherein
- the critical relative humidity of said internal nucleus is 70% or less,
- the internal nuclei have an average particle diameter of from 1 to 20 mm, and
- granules having a particle diameter of 0.5 mm or less account for 10 mass % or less based on the entire mass of the granulated solid processing agent,
- the method comprising the steps of granulating said internal nucleus having critical relative humidity of 70% or less, and then forming three or more coating layers on the surface of said internal nucleus.
Dependencies are inferred from the claim text.