Anti-falsification paper

Details Anti-falsification paper Anti-falsification paper

1995-10-11

1996-10-15

Krynski, William A.

Stock material or miscellaneous articles

Composite

Of carbohydrate

428195, 428207, 428211, 428219, 428323, 428511, 428913, 427331, 427500, 427514, 430 10, 162 70, B32B 2900

Patent

active

055652760

ABSTRACT:
Anti-falsification paper characterized in that thin fragments having brightness, which are obtained by fragmenting nacreous pigment coated paper coated with a nacreous pigment coating solution mainly comprising a nacreous pigment and a binder insoluble in cold water but soluble in hot water, are allowed to exist near the surface of a substrate sheet. Even when falsification is attempted by reproduction using a color copying machine, the colors of the thin fragments having brightness, which are mixed in paper, cannot be reproduced. Therefore, a genuine (original) can be easily distinguished from a forgery (copy). The thin fragments are firmly bonded to paper by the action of the binder, and fall-off of the thin fragments does not occur at the time of printing. Even when anti-falsification paper becomes spoilage or waste paper, thin fragment with brightness does not adversely affect recovery of the pulp.

REFERENCES:
patent: 4428997 (1984-01-01), Shulman
patent: 5233360 (1993-06-01), Prengel et al.
patent: 5340692 (1994-08-01), Vermeulen et al.

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