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Application

99109706/12, 1999-05-19

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Start date

1999-05-19

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Actual filing date

1999-05-19

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Published

1999-12-27

(72)

Inventor

Alekseev L.V.Ipatova T.P.Kaufman V.A.Kurochkin A.V.Mochalov I.A.Klimov A.I.Pisarev A.G.Jamnikov L.S.Sokolova A.A.Chekmarev V.A.

(73)

Holder

Nauchno-Issledovatel'Skij Institut GoznakOb"Edinenie

METHOD OF FORMING COLOR IRIS-EFFECT PRINTING PATTERN WITH COMPLETE CIRCULAR COVERAGE Russian patent published in 1999 - IPC

Abstract RU 2143342 C1

FIELD: polygraphy, in particular, printing of securities, such as banknotes and other color printed product. SUBSTANCE: method involves applying basic structural pattern component in the form of continuously colored line with gradually changing colors; introducing zone of gradually changing colors from one color portion to other color portion so as to form iris pattern with complete circular coverage. It is supposed that length of zone of gradual changing of colors in continuously colored line is within the range of at least 1-25 mm. Gradual color changing zones have variable length and width values. Fragments composed within one basic layer of at least three different optical densities may be introduced into pattern. EFFECT: wider range of products with color patterns and improved protective properties of pattern. 4 cl, 4 dwg

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RU 2 143 342 C1

Authors

Alekseev L.V.

Ipatova T.P.

Kaufman V.A.

Kurochkin A.V.

Mochalov I.A.

Klimov A.I.

Pisarev A.G.

Jamnikov L.S.

Sokolova A.A.

Chekmarev V.A.

Dates

1999-12-27—Published

1999-05-19—Filed