Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1998-05-22

2000-10-03

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Having nonreactant particles of defined size

503204, 503214, 503215, 503216, 503221, B41M 530

Patent

active

061273147

ABSTRACT:
The present invention provides a recording material comprising a substrate, a heat-sensitive layer formed on the substrate by a coating liquid containing (1) microcapsules containing a colorless or light-colored electron-donative dye precursor and (2) a dispersion of solids comprising color developers, and a protective layer formed on the heat-sensitive layer, wherein the dispersion of solids comprising color developers is a dispersion prepared by co-dispersing at least three color developers including at least one solid color developer, preferably a water-soluble color developer, in the form of solid particles and at least one amorphous color developer together with a water-soluble polymer, and wherein the solid particles of the color developers contained in the dispersion have particle diameters in the range of from 0.3 to 0.5 .mu.m and the haze of the heat-sensitive recording material is 55% or less.

REFERENCES:
patent: 4840933 (1989-06-01), Usami et al.
patent: 4857501 (1989-08-01), Usami et al.
patent: 4861748 (1989-08-01), Saeki et al.
patent: 4999333 (1991-03-01), Usami et al.
patent: 5380693 (1995-01-01), Goto

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