Recording material using thermodecoloring dye

Details Recording material using thermodecoloring dye Recording material using thermodecoloring dye

1989-12-19

1991-01-01

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Color developed by mere decomposition of color-former

428195, 428913, 428914, 503218, 503220, 503221, 503223, 503224, B41M 518

Patent

active

049818333

ABSTRACT:
A recording material comprising at least one thermodecoloring type dye represented by formula (I) or formula (II) ##STR1## wherein Ar.sup.1 and AR.sup.2 each represents an aryl group or heteroaryl group; R.sup.1 represents an alkyl group, alkenyl group, aralkyl group, aryl group, or heteroaryl group; A represents an atomic group forming a 5 to 6 member ring; and X.crclbar. represents a residue with an electric charge value of -1; or Ar.sup.1 and Ar.sup.2 bond together to form a ring.

REFERENCES:
patent: 4894358 (1990-01-01), Filosa et al.

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