Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1995-09-22
1997-09-09
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430642, 252312, 252314, 62 66, G03C 1015, G03C 1025, G03C 1047, B01J 1300
Patent
active
056655312
ABSTRACT:
A method of gelation of a photographic emulsion, oil in water emulsion, or a gelatin-containing solution comprising continuously rapidly cooling the photographic emulsion, oil in water emulsion, or the gelatin-containing solution, which has good thermal efficiency and requires no adjustment of the amount of water contained in the rapidly cooled product prior to use, and a unit therefor comprising a static mixer-installed double pipe for rapidly cooling the photographic emulsion, oil in water emulsion, or the gelatin-containing solution by a conduction type heat exchange system, and a double pipe without static mixer for conveying the rapidly cooled product to a storage vessel while avoiding adhesion of the rapidly cooled product transformed into a gel state to the inside surface of the inner pipe of the double pipe by warming the inner pipe with water kept at 30.degree. C., although transformation of the rapidly cooled product to a gel state successively proceeds in an inner portion of the inner pipe.
REFERENCES:
patent: 3810778 (1974-05-01), Wang
patent: 3847616 (1974-11-01), Kaneko et al.
patent: 3910812 (1975-10-01), Kaneko et al.
patent: 4307055 (1981-12-01), Takeda et al.
patent: 4539139 (1985-09-01), Ichikawa et al.
Kojima Akira
Mutoh Kunio
Fuji Photo Film Co. , Ltd.
Huff Mark F.
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