Copy restrictive documents

Details Copy restrictive documents Copy restrictive documents

1997-05-09

1998-12-01

Hess, Bruce H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

283 72, 283 74, 283 93, 380 54, 4285375, B32B 300, G09C 500

Patent

active

058435646

ABSTRACT:
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying the document.

REFERENCES:
patent: 5291243 (1994-03-01), Heckman et al.
patent: 5396559 (1995-03-01), McGrew
patent: 5541741 (1996-07-01), Suzuki

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