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:
Jan. 26, 1993
Filed:
Dec. 05, 1990
Tsugio Nagasawa, Uji, JP;
Tadashi Shuto, Uji, JP;
Toshiaki Matsumoto, Uji, JP;
Hideo Sakuraya, Uji, JP;
Shoji Nishimoto, Uji, JP;
Unitika Ltd., Amagasaki, JP;
Abstract
A film for a thermal transfer ink ribbon having excellent heat stick resistance, which comprises a base film made of a biaxially stretched thermoplastic resin film and a thermally meltable ink layer or a thermally sublimable ink layer formed on one side of the base film, wherein a thin layer composed of (A) a thermally reactive urethane prepolymer, (B) a fluorine-type polymer resin having a perfluoralkyl group in its molecule, (C) a silicon-type compound having a hydroxyl group at each terminal of a dimethylpolysiloxane group, and (D) a polyvinyl alcohol having a saponification degree of at least 96 mol % and/or water-soluble starch, is formed on the other side of the base film at a rate of 0.05 to 0.5 g/m.sup.2 as the total solid content of (A), (B), (C) and (D).