Printed matter – Having revealable concealed information – fraud preventer or... – Utilizing electromagnetic radiation
Reexamination Certificate
2004-12-02
2009-10-20
Ross, Dana (Department: 3725)
Printed matter
Having revealable concealed information, fraud preventer or...
Utilizing electromagnetic radiation
C283S109000, C283S110000, C428S029000
Reexamination Certificate
active
07604257
ABSTRACT:
The printed product comprises a carrier (1) provided with a relief on the surface thereof in the form of a plurality of grooves and a main visible image transmitted by an ordered screen, wherein said relief and the screen structure of the visible image are embodied in such a way that at least one additional image becomes manifest on the main image background when a lighting or viewing angle is modified. According to the invention, the angle and period (d) of the groove tracing is equal to the angle and lineature of the main image screen, and geometrical distortions whose value corresponds to the value of tonal gradations of the additional image are introduced into the relief and/or the main image screen structure without breaking the continuity of the pattern lines forming said screen and relief, whereby a nonuniform system of cross-points of the grooves with the screen pattern lines (8) forming said additional image is created.
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Partial English Translation of RU 2 099 197 dated Dec. 20, 1997.
Zaitsevsky Alexei Vadimovich
Zuev Boris Alexandrovich
Battula Pradeep C
Ladas and Parry LLP
Milimarex Limited
Ross Dana
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