Recording sheet and color developer therefor

Details Recording sheet and color developer therefor Recording sheet and color developer therefor

1973-10-16

1976-01-20

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Weight per unit area specified

428343, 428411, 428488, 428539, B41M 516

Patent

active

039340708

ABSTRACT:
A color developer is disclosed which, when contacted with a color former, is capable of forming a distinct color, the color developer comprising a metallic compound of an aromatic carboxylic acid. Suitable metals are, for example, those of the following groups of the Periodic Table: Ib, IIa, IIIb, IVb, VIa, VIIa and VIII. A recording sheet employing the color developer is also disclosed.

REFERENCES:
patent: 2910377 (1959-10-01), Owen
patent: 3260613 (1966-07-01), Otto
patent: 3287154 (1966-11-01), Haas
patent: 3619238 (1971-11-01), Kimura et al.
patent: 3681390 (1972-08-01), Lin
patent: 3682673 (1972-08-01), Manske
patent: 3682680 (1972-08-01), Hayashi et al.
patent: 3703398 (1972-11-01), Ono et al.
patent: 3864146 (1975-02-01), Oda et al.

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