Hidden entry system and image-developing device therefor

Details Hidden entry system and image-developing device therefor Hidden entry system and image-developing device therefor

1993-08-23

1995-07-11

Fridie, Willmon

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing chemical

283901, 283903, B42D 1500

Patent

active

054314526

ABSTRACT:
A hidden entry system comprises a document having a first substrate bearing a localized latent image spaced apart from a removable image-developing device comprising a second substrate having a first surface and a second surface, the first surface of the second substrate bearing a chromogenic composition comprising an image-forming co-reactant, the image-forming co-reactant being a chromogen or a color developer, the second surface of the second substrate bearing a pressure-sensitive adhesive. The image developing device is in superposed relation with the first substrate with the pressure sensitive coating being releasably attached to the first substrate.

REFERENCES:
patent: 2929736 (1960-03-01), Miller et al.
patent: 3004896 (1961-10-01), Heller et al.
patent: 3189615 (1965-06-01), Heller et al.
patent: 3249458 (1966-05-01), Cornell et al.
patent: 3349408 (1967-10-01), Gillen et al.
patent: 3363336 (1968-01-01), Skinner
patent: 3363338 (1968-01-01), Skinner et al.
patent: 3383121 (1968-05-01), Singer
patent: 3451143 (1969-06-01), Thomas et al.
patent: 3554781 (1971-01-01), Matsukawa
patent: 3682673 (1972-08-01), Manske
patent: 3691140 (1972-09-01), Silver
patent: 3713861 (1973-01-01), Sharp
patent: 3725104 (1973-04-01), Fraik
patent: 3788863 (1974-01-01), Scheuer
patent: 3821010 (1974-06-01), Vincent et al.
patent: 3823022 (1974-07-01), Thomas
patent: 3829133 (1974-08-01), Smagala-Romanoff
patent: 3857731 (1974-12-01), Merrill, Jr. et al.
patent: 3920863 (1975-11-01), Fraik
patent: 3954803 (1976-05-01), Vincent et al.
patent: 3957495 (1976-05-01), Teranishi et al.
patent: 4010292 (1977-03-01), Shackle et al.
patent: 4012419 (1977-03-01), Vincent et al.
patent: 4037007 (1977-07-01), Wood
patent: 4051283 (1977-09-01), Thomas et al.
patent: 4104437 (1978-08-01), Vincent et al.
patent: 4109047 (1978-08-01), Fredrickson
patent: 4111702 (1978-09-01), Fraik
patent: 4112138 (1978-09-01), Davis et al.
patent: 4137343 (1979-01-01), Davis et al.
patent: 4139218 (1979-02-01), Davis et al.
patent: 4139392 (1979-02-01), Davis et al.
patent: 4140733 (1979-02-01), Meyer, Jr. et al.
patent: 4143890 (1979-03-01), Davis et al.
patent: 4162165 (1979-07-01), Schwab
patent: 4170483 (1979-10-01), Shackle et al.
patent: 4171981 (1979-10-01), Austin et al.
patent: 4174857 (1979-11-01), Koza
patent: 4175774 (1979-11-01), Tonges et al.
patent: 4183989 (1980-01-01), Tooth
patent: 4186020 (1980-01-01), Wachtel
patent: 4197346 (1980-04-01), Stevens
patent: 4199618 (1980-04-01), Golden
patent: 4210346 (1980-07-01), Mowry, Jr. et al.
patent: 4264365 (1981-04-01), Sanders
patent: 4278589 (1981-07-01), Dexter et al.
patent: 4303307 (1981-12-01), Tureck et al.
patent: 4317743 (1982-03-01), Chang
patent: 4336067 (1982-06-01), Shackle et al.
patent: 4360548 (1982-11-01), Skees et al.
patent: 4376887 (1983-03-01), Greenaway et al.
patent: 4425386 (1984-01-01), Chang
patent: 4448445 (1984-05-01), Chang et al.
patent: 4488646 (1984-12-01), McCorkle
patent: 4505498 (1985-03-01), Weinberger
patent: 4631203 (1986-12-01), Schaefer et al.
patent: 4726608 (1988-02-01), Walton
patent: 4747619 (1988-05-01), Sager
patent: 4784876 (1988-11-01), Walker, Jr. et al.
patent: 4839396 (1989-06-01), Tusim
patent: 4846502 (1989-07-01), Chang et al.
patent: 4873219 (1989-10-01), Brown et al.
patent: 4918045 (1990-04-01), Matsuoka et al.
patent: 4940690 (1990-07-01), Skees
patent: 5132034 (1992-07-01), Hsu et al.
patent: 5193854 (1993-03-01), Borowski, Jr. et al.
patent: 5212219 (1993-05-01), Griffin
patent: 5250492 (1993-10-01), Dotson et al.
Research Disclosure (No. 187), Nov. 1979, pp. 638-639.

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