Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Spatial relationship specified between color-former and...
Reexamination Certificate
2003-08-28
2008-05-27
Hess, Bruce H. (Department: 1794)
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Spatial relationship specified between color-former and...
C503S200000
Reexamination Certificate
active
07378374
ABSTRACT:
A thermally sensitive recording medium containing a thermally sensitive recording medium providing an undercoating layer containing a pigment and a binder as main components and a thermally sensitive recording layer containing a colorless or pale colored basic leuco dye and a color developing agent, which reacts with said basic leuco dye, as main components on a substrate, wherein the undercoating layer contains carboxymethyl cellulose having an etherification degree of from 0.55 to 0.75 and hydroxyethyl cellulose from the view point of high effectiveness.
REFERENCES:
patent: 5128310 (1992-07-01), Mitsuo et al.
Date Takashi
Hamada Kaoru
Natsui Junpei
Tsuzuki Yuji
Watanabe Masayuki
Flynn, Theil, Boutell & Tanis, P.C.
Nippon Paper Industries Co. Ltd.
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