Pressure sensitive recording papers

Details Pressure sensitive recording papers Pressure sensitive recording papers

1974-08-01

1976-09-28

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428537, B41M 512

Patent

active

039832929

ABSTRACT:
In a pressure sensitive recording paper which comprises in combination: a dyestuff precursor or dyestuff precursor solution and a dyestuff acceptor composition which is capable of color formation by reaction with said dyestuff precursor, the dyestuff acceptor consists essentially of a polyvalent metal salt of 3-position-substituted salicylic acid derivatives having at least 12, preferably at least 19 carbon atoms.

REFERENCES:
patent: 2972547 (1961-02-01), Tien
patent: 3346571 (1967-10-01), Spatz et al.
patent: 3450553 (1969-06-01), Billet et al.
patent: 3617335 (1971-11-01), Kimura
patent: 3723156 (1973-03-01), Brockett et al.
patent: 3732120 (1973-08-01), Brockett et al.

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