Thermosensitive recording material

Details Thermosensitive recording material Thermosensitive recording material

1990-03-23

1991-08-27

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Heavy metal reactant

427150, 427151, 503200, 503211, 503212, 503216, 503217, 503225, 503226, B41M 532

Patent

active

050433130

ABSTRACT:
A thermosensitive recording material comprising (a) a support, and (b) a thermosensitive recording layer formed on the support, comprising a leuco dye and a color developing agent comprising a metal salt or metal complex of a compound having formula (I), which is capable of inducing color formation in the leuco dye upon application of heat thereto: ##STR1## wherein X represents a halogen, an alkyl group having 1 to 10 carbon atoms, or an alkoxyl group having 1 to 10 carbon atoms; R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen, a halogen, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an aralkyloxyl group having 7 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, an alkylthio group having 1 to 10 carbon atoms, an aralkylthio group having 6 to 20 carbon atoms or an arylthio group having 6 to 20 carbon atoms, R.sup.1 and R.sup.2, or R.sup.2 and R.sup.3 may form together with an adjacent benzene ring a naphthalene ring, a tetrahydronaphthalene ring or an indan ring; and m is an integer of 1 to 4.

REFERENCES:
patent: 4536779 (1985-08-01), Nachbur et al.
patent: 4729984 (1988-03-01), Hama et al.

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