Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having constituent defined in terms of melting temperature
Patent
1986-06-30
1987-07-28
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having constituent defined in terms of melting temperature
503209, 503214, 427150, 427151, B41M 518
Patent
active
RE0324663
ABSTRACT:
Disclosed is a heat-sensitive color-forming recording material which comprises a recording layer comprising a particulate phenolic color developer and a particulate leuco pigment, which are dispersed in a binder independently from each other, wherein the phenolic color developer and/or leuco pigment is present in the form of compatible solid particles with a substantially inactive organic solid medium having a melting or softening point lower than that of the phenolic color developer and/or leuco pigment and said organic solid medium is present in said compatible solid particles in an amount [2 to 250 times as large as] of 0.2 to 250% by weight, based on the amount of the phenolic color developer and/or leuco pigment on the weight base. This heat-sensitized color-forming recording material is highly sensitive without substantial increase of the fog density.
REFERENCES:
patent: 4032690 (1977-06-01), Kohmura et al.
patent: 4236732 (1980-12-01), Murakami et al.
patent: 4287264 (1981-09-01), Marginean
patent: 4295888 (1981-10-01), Greenwood et al.
Hess Bruce H.
Mita Industrial Co Ltd.
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