CONCEALED BITMAP PRINTED IMAGE Russian patent published in 2004 - IPC

Abstract RU 2238189 C2

FIELD: printing technologies.

SUBSTANCE: image is received by additive method of color mixing with use of coloring substance of blue, red an green colors and luminescent under effect from ultraviolet beams substance. Image contains preferably several coloring substances, luminescent under effect from ultraviolet beams.

EFFECT: higher efficiency.

2 cl

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RU 2 238 189 C2

Authors

Berend Rajmund Khajnrikh

Dates

2004-10-20—Published

2000-03-17—Filed