Record material

Details Record material Record material

1984-11-02

1986-05-06

Hess, Bruce H.

Recorders

Record receiver deforming

346217, 346223, 427151, B41M 516, B41M 522

Patent

active

045875383

ABSTRACT:
Pressure sensitive record material uses a 2,3-disubstituted-1,2,3,4-tetrahydroquinazolin-4-ones of the formula (I): ##STR1## where R.sub.1 and R.sub.2 have defined meanings, as color formers. Preferred compounds of formula (I) are intense fade resistant and stable yellow color formers useful in making black copy formulations.

REFERENCES:
patent: 4435003 (1984-03-01), Fletcher

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