Copy restrictive documents

Details Copy restrictive documents Copy restrictive documents

1997-05-09

1999-01-05

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Component noncoextensive with substrate

283 72, 283 74, 283 93, 283 94, 380 54, 396210, 428 29, 428194, 428195, 428203, 428206, 428207, 428913, 430 10, 430523, 430952, B44F 100

Patent

active

058562664

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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