Printed matter – Having revealable concealed information – fraud preventer or... – Having plastic laminate
Patent
1989-09-19
1991-10-29
Bell, Paul A.
Printed matter
Having revealable concealed information, fraud preventer or...
Having plastic laminate
283 75, 283 85, 283 87, 283 90, 283 91, 283904, B42D 1500
Patent
active
050609815
ABSTRACT:
A transparent overlay that can protect a document from tampering has a transparent cover sheet, a layer of hot-melt adhesive over one surface of the transparent cover sheet, and a polymeric image-receiving layer over the exposed face of said hot-melt adhesive layer. The transparent cover sheet can be a simple thermoplastic film but preferably is retroreflective sheeting which can bear a pattern or legend that is noticeable only when viewed retroreflectively. When the polymeric image-receiving layer is dye-receptive, it can be imaged by using a thermal printing head with a dye-donor element. A preferred polymeric image-receiving layer that is dye-receptive is chlorinated poly(vinylchloride).
REFERENCES:
patent: 3801183 (1974-04-01), Sevelin et al.
patent: 3898086 (1975-08-01), Franer et al.
patent: 4099838 (1978-07-01), Cook et al.
patent: 4688894 (1987-08-01), Hockert
patent: 4691993 (1987-08-01), Porter et al.
patent: 4713365 (1987-12-01), Harrison
patent: 4847238 (1989-07-01), Jongewaard et al.
patent: 4911478 (1990-03-01), Oshikoshi et al.
patent: 4928996 (1990-05-01), Oshikoshi et al.
P. Gregory, Chem. Brit., 25, 47 (1989).
C. J. Bent et al., J. Soc. Dyers, Colour, 85, 606 (1969).
J. Griffiths and F. Jones, J. Soc. Dyers Colour, 93, 176 (1977).
J. Aihara et al., Am. Dyest Rep., 64, 46 (1975).
C. E. Vellins, "The Chemistry of Synthetic Dyes", K. Venkataraman, ed., vol. VIII, 191, Acadamic Press, New York, 1978.
Fossum Douglas K.
Jongewaard Susan K.
McConville John W.
Bell Paul A.
Griswold Gary L.
Jordan Robert H.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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