Copy form set

Details Copy form set Copy form set

1988-04-06

1990-08-28

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Plural colors or plural diverse systems

427152, 428195, 428207, 428484, 4284881, 428914, 503206, 503226, B41M 522

Patent

active

049525514

ABSTRACT:
The lower side of a transmitter sheet (1) of a copy form set of chemically reacting color reaction paper provided with a CB coating (2) is zonewise provided with an additional ink layer (4) e.g. on wax basis. On writing or printing upon the copy form set within the intensification zone (3) defined by the additional ink layer (4) the color pigments of the additional ink layer (4) are partially or completely dissolved by means of the CB substances of the CB coating and transmitted to the CF coating (5) of the receiver sheet (6). This results in that the copy is itensified within the area of the intensification zone (3), thus becoming particularly machine-readable.

REFERENCES:
patent: 4162165 (1979-07-01), Schwab
patent: 4404251 (1983-09-01), Jabs et al.
patent: 4662651 (1987-05-01), Mowsy

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