Printed matter – Having revealable concealed information – fraud preventer or... – Utilizing electromagnetic radiation
Patent
1996-03-05
1998-12-29
Fridie, Jr., Willmon
Printed matter
Having revealable concealed information, fraud preventer or...
Utilizing electromagnetic radiation
283 72, 283902, 359569, B42D 1500
Patent
active
058531971
ABSTRACT:
A security document is provided comprising a substrate having a top surface for carrying indicia. The top surface has a plurality of areas. Each of the areas contains background printed matter on the top surface. The background printed matter made up of a pattern of background elements. Each of the areas also contains a security term printed on the top surface of the substrate. The security term is composed of a pattern of security term elements. The background elements and/or the security term elements differ in element size, shape, angle, density, and/or frequency between adjacent areas. Also, within each of the areas either the background elements or the security term elements are not readily duplicated by a color copier while the remaining elements in the area are readily duplicated by a color copier. This results in a visually perceptible security term being produced upon copying of the security document.
REFERENCES:
patent: 4227720 (1980-10-01), Mowry, Jr., et al.
patent: 4234214 (1980-11-01), Lee
patent: 4579370 (1986-04-01), Corwin et al.
patent: 4715623 (1987-12-01), Roule et al.
patent: 4891666 (1990-01-01), Gordon et al.
patent: 5074596 (1991-12-01), Castagnoli
patent: 5078428 (1992-01-01), Maeno
patent: 5197765 (1993-03-01), Mowry, Jr., et al.
patent: 5297815 (1994-03-01), Anderson et al.
patent: 5340159 (1994-08-01), Mowry, Jr.
patent: 5375886 (1994-12-01), Tsuchiya
patent: 5487567 (1996-01-01), Volpe
patent: 5538290 (1996-07-01), Diamond
patent: 5575508 (1996-11-01), Diamond
patent: 5707083 (1998-01-01), Wallace
patent: 5717040 (1992-12-01), Orndoff
patent: 5735547 (1998-01-01), Morelle et al.
Lakes A Dale
Mowry, Jr. William H
Fridie Jr. Willmon
The Standard Register Company
LandOfFree
Security document does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Security document, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security document will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1417955