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2 132 564

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C1

(51)

IPC

(21) (22)

Application

97105237/04, 1997-04-01

(22)

Actual filing date

1997-04-01

(45)

Published

1999-06-27

(72)

Inventor

Koveshnikov A.I.

(73)

Holder

Koveshnikov Aleksej Ivanovich

MULTIPURPOSE CONCENTRATED DEVELOPER FOR TREATMENT OF PHOTOGRAPHIC MATERIALS AND METHOD OF PREPARING OPERATION SOLUTION FROM IT Russian patent published in 1999 - IPC

Abstract RU 2132564 C1

FIELD: photographic materials. SUBSTANCE: developer comprises two parts. The first part contains hydroquinone, sodium sulfate, sodium carbonate, potassium bromide, benzotriazol, boric acid, oxyethylenediphosphonic acid, and water, and the other part contains phenidone or methylphenidone, sodium sulfite, potassium or sodium hydroxide, Trilon B and water in specified amounts. EFFECT: increased stability. 2 cl, 3 tbl

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RU 2 132 564 C1

Authors

Koveshnikov A.I.

Dates

1999-06-27—Published

1997-04-01—Filed

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