Thermally-responsive record material

Details Thermally-responsive record material Thermally-responsive record material

1991-08-15

1992-06-23

Schwartz, Pamela R.

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

427151, 503216, 503225, B41M 530

Patent

active

051243075

ABSTRACT:
A novel thermally-responsive record material is disclosed comprising a support having provided thereon in substantially contiguous relationship an electron donating dye precursor and a fluorene bisphenol of the formula ##STR1## wherein each R is independently selected from hydrogen and C.sub.1 to C.sub.8 alkyl,

REFERENCES:
patent: 4803193 (1989-02-01), Kanda et al.

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