Safety drawing for securities

Details Safety drawing for securities Safety drawing for securities

1998-06-03

2000-04-18

Pitts, Andrea L.

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

283114, 283901, 283902, B42D 1500

Patent

active

060506067

ABSTRACT:
The drawing has a background (10) composed of at least a first region and a second region juxtaposed. Each of said regions comprises its own geometrical drawing so that the first region has a color density which is stronger than that of the second region, said second region forming a pattern. An overprint (20) corresponding to said overprint is printed over the second region, said overprint (20) comprising geometrical drawings different than that of said second region and in a color chosen to compensate the difference of color density between said regions, so that the safety drawing appears uniform and with no pattern to the naked eye, but said pattern is clearly brought out and in another color than that of the first region on a photocopy of the safety drawing.

REFERENCES:
patent: 3147699 (1964-09-01), Land
patent: 4040353 (1977-08-01), Lefebvre
patent: 5443579 (1995-08-01), Tanaka et al.
patent: 5487567 (1996-01-01), Volpe
patent: 5853197 (1998-12-01), Mowry, Jr. et al.

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