Back to results
US 12,053,997 B2Granted
Thermosensitive recording medium
AssigneeNippon Paper Industries Co., Ltd.
InventorsKenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNippon Paper Industries Co., Ltd.
InventorsKenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
Estimating the term…
Provided is a thermosensitive recording medium having a sufficient water resistance to moisture and humidity, such as for outdoor use in rainy weather and the like, and also having a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like. As the protective layer comprises a specific silane-modified acrylic resin which is an aqueous emulsion of core-shell type p articles, in a thermosensitive recording medium having a thermosensitive recording layer on a substrate and a protective layer on the thermosensitive recording layer, the thermosensitive re cording medium has a sufficient water resistance and also has a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like.
A thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate and a protective layer on the thermosensitive recording layer, wherein the protective layer comprises a silane- modified acrylic resin and the silane-modified acrylic resin is an aqueous emulsion of core-shell type particles, wherein the core-shell type particle comprises (i) a core comprising copolymer A prepared by polymerizing the following (a1), (a2) and (a3) in the presence of (b), and (ii) a shell comprising copolymer B prepared by polymerizing the following (a1) and (a2) in the presence of (b).
Dependencies are inferred from the claim text.