Process for producing heat-sensitive recording material

Details Process for producing heat-sensitive recording material Process for producing heat-sensitive recording material

1991-02-15

1995-03-14

Bell, Janyce

Coating processes

Transfer or copy sheet making

Reactive components

427151, 4273855, B41M 312

Patent

active

053975944

ABSTRACT:
A heat-sensitive recording material with a satisfactory whiteness and an enhanced heat-sensitivity is produced by a process comprising the steps of preparing a coating liquid containing a dye-precursor dispersion and a color developer dispersion, coating a surface of a sheet substrate with the coating liquid and solidifying the resultant coating liquid layer on the sheet substrate, in which process at least one member of the dye-precursor and the color developer is finely pulverized by at least one dispersing operation, in the presence of a pulverizing medium consisting of a number of solid grains having a diameter of 0.9 mm or less, into fine particles having an average size of 0.7 .mu.m or less.

REFERENCES:
patent: 4246312 (1981-01-01), Kosaka et al.
patent: 4247595 (1981-01-01), Nomura et al.
patent: 4407886 (1983-10-01), Hoffman et al.
patent: 4527178 (1985-07-01), Usui et al.
patent: 4554566 (1985-11-01), Yoneda et al.
patent: 4717593 (1988-01-01), Igarashi et al.

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