Recording material

Details Recording material Recording material

1986-04-09

1988-02-23

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Identified color-former

427150, 427151, 503221, 549227, B41M 516, B41M 518, B41M 522

Patent

active

047270560

ABSTRACT:
A recording material comprising at least one electron-donating colorless dye having, in a 95% acetic acid solution, a maximum absorption at a wavelength of from 400 to 550 nm in the spectral absorption range of from 400 to 700 nm, and at least one fluoran derivative represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group, nitro, amino, cyano, acylamino, dialkylamino or a halogen atom.

REFERENCES:
patent: 4390616 (1983-06-01), Sato et al.
patent: 4433156 (1984-02-01), Ishige et al.
patent: 4436920 (1984-03-01), Sato et al.

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