Leuco dye and image recording medium containing the same

Details Leuco dye and image recording medium containing the same Leuco dye and image recording medium containing the same

1999-09-01

2000-11-07

Baxter, Janet

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

430336, 4302701, G03C 140

Patent

active

061434809

ABSTRACT:
Disclosed is a leuco dye in which a hydrogen atom capable of transferring by isomerization in a dye represented by formula (1) or a tautomer thereof is substituted by a substituent group P which can be removed by the action of heat or acid ##STR1## wherein (A) represents an atomic group necessary for forming a nitrogen-containing hetero ring; (B) represents an atomic group necessary for forming a six-membered hetero ring; and X represents an oxygen atom, a sulfur atom or a nitrogen atom, which may have a hydrogen atom or a possible substituent group.

REFERENCES:
patent: 5071987 (1991-12-01), Raulf et al.
patent: 5243052 (1993-09-01), Taylor et al.

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