Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1987-06-08

1988-12-27

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Having constituent defined in terms of melting temperature

427151, 428913, 503209, 503210, 503211, 503212, 503216, 503217, 503220, 503221, 503223, B41M 518

Patent

active

047941014

ABSTRACT:
In a heat-sensitive recording material incorporating a colorless or pale-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that (a) as the basic dye are used 100 parts by weight of a specific phthalide derivative of the formula [I] and 20 to 100 parts by weight of a specific black color-forming fluoran derivative of the formula [II], (b) as the color acceptor is used a polyvalent metal salt of an aromatic carboxylic acid and (c) a recording sensitizer is further used, and whereby the resulting record images are at least 0.75 in PCS value at 800 nm.

REFERENCES:
patent: 4658276 (1987-04-01), Kanda et al.

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