Recording material

Details Recording material Recording material

1987-09-03

1989-02-28

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Identified organic electron acceptor other than phenolic resin

427151, 428913, 428914, 503220, 503223, B41M 516, B41M 518, B41M 522

Patent

active

048085669

ABSTRACT:
A recording material comprising an electron-donating colorless dye and an electron-accepting compound, wherein said colorless dye is a dimer of a 3-(4-substituted aminoaryl)-3-(substituted indol-3-yl)phthalide compound. The recording material provides an image exhibiting satisfactory fastness, and particularly fastness to light even when preserved in a transparent polyvinyl chloride film.

REFERENCES:
patent: 4026883 (1977-05-01), Farber

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