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:
Dec. 29, 1992
Filed:
Aug. 30, 1989
Michinari Tsukahara, Nagano, JP;
Makoto Taniguchi, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A thermal transfer ink composition including a first component not having a distinct melting point below about 200.degree. C. The first component can be present as about 5 to 75% of the ink composition. The ink composition also preferably includes a second component having a melting point below about 200.degree. C. and colorant. The ink is highly resistant to extended exposure to high heat and high humidity and is capable of providing color printing with excellent color gradation and a broad range of color as well as providing a color image having a smooth look and feel. A thermal transfer ink medium includes the ink composition coated on a thin film support. The optical density of ink transferred from the medium is linearly proportional to printing energy supplied to the transfer medium.