Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having nonchromogenic liquid spread-control or...
Patent
1990-02-05
1992-02-25
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having nonchromogenic liquid spread-control or...
B41M 530
Patent
active
050913590
ABSTRACT:
The heat-sensitive record material, in which color images are produced by a color-forming reaction between a colorless or pale colored basic chromogenic material and a color developer, comprises a novolac-type epoxy resin or a diphenyl sulfone derivative represented by the formula (III) in the color forming reaction system.
In the former case, it is preferable to use a novolac-type epoxy resin represented by the formula (I) together witha a compound represented by the formula (II) and, in the latter case, the desired effects can be obtained by using 3-dibutylamino-6-methyl-7-phenylaminofluoran as the basic chromogenic material. ##STR1## wherein X is halogen or alkyl having C.sub.1 to C.sub.5, and a is an integer of 0 to 4; and n is an integer of 0 to 20, each of R.sub.1 .about.R.sub.6 is hydrogen, halogen, C.sub.1-5 alkyl or C.sub.1-5 alkoxyl, R.sub.7 is ##STR2## R.sub.10 is hydrogen or alkyl; each of p and q is 0 or an integer of 1 to 5; each of r and s is an integer of 1 to 5; each R.sub.8 and R.sub.9 is halogen, alkyl or alkoxyl; l is 0 or 1; u is 0 or an integer of 1 to 5; and t is 0 or an integer of 1 to 4.
REFERENCES:
patent: 4370370 (1983-01-01), Iwata et al.
patent: 4950637 (1990-08-01), Okauchi et al.
Ishida Koichi
Takayama Yukio
Hess Bruce H.
Kanzaki Paper Manufacturing Co. Ltd.
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