Copy restrictive documents

Details Copy restrictive documents Copy restrictive documents

1996-02-08

1999-07-06

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Method of use, kit, or combined with marking instrument or...

283 72, 283 74, 283 93, 283 94, 283107, 283109, 380 54, 428194, 428195, 428203, 428206, 428207, 430 10, 430523, B32B 300, G03C 300

Patent

active

059197307

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.

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"In Photoshop" Phillip Fortune, Dec. 14, 1995, University of CT Health Center, Internet article.
"Nature" E.N. Willmer and W.D. Wright, p. 119, vol. 156, 1945.

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