Negotiable document

Details Negotiable document Negotiable document

1976-12-29

1979-03-13

Herbert, Jr., Thomas J.

Textiles: manufacturing

427 7, 427153, 427261, 428326, 428486, 428488, 428913, 428914, 428915, 428916, B41L 500, B41M 510

Patent

active

041438914

ABSTRACT:
The negotiable document which may be used, e.g. by airlines includes a cover sheet provided with a hot spot carbon or other image transfer medium and at least one underlying sheet fully or partly coated with microcapsules of a dye intensifier and attractor. When information is imprinted on the cover sheet, the microcapsules of the dye intensifier in the underlying sheet are burst to wet the sheet and, thus, allow impregnation of the image transferred by the hot spot carbon into the fibers of the sheet. At the same time, the dye within the hot spot carbon is attracted into the sheet. The impregnation of the sheet is sufficient to prevent removal of the image from the underlying sheet without first destroying the sheet or mutilating it in such a manner that the defalcation effort is obvious.

REFERENCES:
patent: 2035768 (1936-03-01), Sherman et al.
patent: 2164685 (1939-07-01), Kinyon
patent: 2503680 (1950-04-01), Newman
patent: 3104799 (1963-09-01), Steidinger
patent: 3376154 (1968-04-01), Campbell et al.
patent: 3908063 (1975-09-01), Rosendale et al.
patent: 3963853 (1976-06-01), Hughes et al.
patent: 3996406 (1976-12-01), Alsop

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