METHOD FOR CHEMICAL SENSITIZING OF PHOTOGRAPHIC EMULSION Russian patent published in 2005 - IPC

Abstract RU 2253144 C1

FIELD: chemistry.

SUBSTANCE: to increase efficiency of photo-electrons formed during exposure during process of forming of development centers of concealed image and therefore increasing light sensitivity level of emulsion, method for chemical sensitizing of emulsion is used, in which into thermostat-processed at 50-60°C halogen-silver emulsion sulphureous composition is injected in form of previously prepared suspension in amount 1,0 x 10^-10- 3,0 x 10^-10 moles for 1 sm² of surface of micro-crystals of halogen-silver. Emulsion is exposed with mixing during 60-120 minutes.

EFFECT: higher efficiency.

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RU 2 253 144 C1

Authors

Kagakin E.I.

Petrushina A.V.

Dates

2005-05-27—Published

2003-11-03—Filed