The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1995
Filed:
Sep. 08, 1993
Makoto Motoda, Tokyo, JP;
Haruyoshi Funae, Tokyo, JP;
Takao Kosaka, Tokyo, JP;
Toru Nakazawa, Tokyo, JP;
Yasuko Kaneko, Tokyo, JP;
Abstract
A heat-sensitive recording sheet superior in color formation and sticking resistance and excellent in storage stabilities such as plasticizer resistance and wet-rub resistance and printability which comprises a support and, provided thereon, a heat-sensitive recording layer and a protective layer is provided by using as a main component of the protective layer in the case of the protective layer comprising one layer a latex having a softening point of 200.degree.-350.degree. C. obtained by polymerizing mainly a specific hydrophobic vinyl monomer in the presence of a polymeric latex having a glass transition temperature of 50.degree. C. or lower and as a main component of the protective layer in the case of the protective layer comprising two or more layers a latex having a softening point of 150.degree.-260.degree. C. in the inner layer(s) and preferably, using in the outermost protective layer said specific latex having a softening point of 200.degree.-350.degree. C. used in the protective layer comprising one layer. Furthermore, the heat-sensitive recording layer may optionally contain 2,4'-dihydroxydiphenyl sulfone and preferably a hindered phenol.