Printed matter – Having revealable concealed information – fraud preventer or... – Utilizing chemical
Patent
1983-07-18
1990-02-27
Eley, Timothy V.
Printed matter
Having revealable concealed information, fraud preventer or...
Utilizing chemical
283 70, 283 74, 283 77, 283901, B42D 1500
Patent
active
049039911
ABSTRACT:
A system for verifying the authenticity of documents such as negotiable instruments wherein a field of photoactive microcapsules is provided in a localized area on the document. By image-wise exposing the document, a latent image of a verification meand such as a signature, fingerprint, or the like can be produced on the document which can be instantly developed upon rupturing the microcapsules to verify the authenticity of the document when it is presented.
REFERENCES:
patent: 2953454 (1960-09-01), Berman
patent: 3001873 (1961-09-01), Foris
patent: 3001887 (1961-09-01), Ahlem, Jr. et al.
patent: 3048697 (1962-08-01), Cavanaugh et al.
patent: 3072481 (1963-01-01), Berman et al.
patent: 3090687 (1963-05-01), Berman
patent: 3116148 (1963-07-01), Miller
patent: 3219446 (1965-11-01), Berman
patent: 3700439 (1972-10-01), Phillips
patent: 3736139 (1973-05-01), Yamashita et al.
patent: 3892569 (1975-07-01), Speers
patent: 3950013 (1976-04-01), Tagliaferri
patent: 4009892 (1977-03-01), Nickerson
patent: 4037007 (1977-07-01), Wood
patent: 4149887 (1979-04-01), Levy
patent: 4330613 (1982-05-01), Fickes
patent: 4360548 (1982-11-01), Skees et al.
patent: 4397941 (1983-08-01), Fickes
patent: 4399209 (1983-08-01), Sanders
patent: 4440846 (1984-04-01), Sanders et al.
patent: 4562137 (1985-12-01), Sanders
Research Disclosure, #18747, Nov. 1979, (No. 187?).
"What's Ahead", Lloyd E. Varden, Modern Photography, p. 86, 1958.
Eley Timothy V.
The Mead Corporation
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