Information bearing article with tamper resistant scratch-off op

Details Information bearing article with tamper resistant scratch-off op Information bearing article with tamper resistant scratch-off op

1986-08-05

1988-02-23

Bell, Paul A.

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing solvent

283102, 283901, 283903, B42D 1500

Patent

active

047266082

ABSTRACT:
An indicia bearing article, such as a lottery ticket, contest form or other document, for example, is provided. The article includes an indicia bearing sheet and an opaque coating thereover for hiding the indicia. The opaque coating contains metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in the opaque coating and hidden beneath the metal particles, for providing visual evidence of exposure to the solvent.

REFERENCES:
patent: 4095824 (1978-06-01), Bachman
patent: 4120445 (1978-10-01), Carrier et al.
patent: 4241942 (1980-12-01), Bachman
patent: 4273362 (1981-06-01), Carrier et al.
patent: 4398708 (1983-08-01), Goldman et al.
patent: 4407443 (1983-10-01), McCorkle
patent: 4457430 (1984-07-01), Darling et al.
patent: 4488646 (1984-12-01), McCorkle
patent: 4536218 (1985-08-01), Ganho

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