METHOD FOR SILVER PATTERN BEEFING-UP Russian patent published in 1994 - IPC

Abstract RU 2009535 C1

FIELD: amateur photography technology. SUBSTANCE: photographic material silver pattern intensification is made by bleaching processing in solution which contains copper sulfate, potassium bromide, citric acid and water. After bleaching processing beefing-up is made by solution using with agents composition made from potassium-sodium wilson acidulous 0,1-0,5 g per l, caustic soda 10-20 g per l, sodium-chloride 100-200 g per l and water up to 1 l. EFFECT: higher copying pattern tightness.

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RU 2 009 535 C1

Authors

Dobyrn V.V.

Kaparikha A.V.

Rogach L.P.

Khramova L.N.

Dates

1994-03-15Published

1991-07-01Filed