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. 15, 1991
Filed:
Dec. 22, 1988
Tetsuji Kawakami, Katano, JP;
Akihiro Imai, Ikoma, JP;
Nobuyoshi Taguchi, Ikoma, JP;
Yukichi Murata, Sagamihara, JP;
Takao Hirota, Machida, JP;
Matsushita Electric Industrial Co., Ltd, Osaka, JP;
Mitsubishi Kasei Corporation, Osaka, JP;
Abstract
The present invention provides a dye transfer type thermal printing sheet which can give a color record image excellent in color reproducibility and weather resistance with middle shade including black and sufficiently saturated density. This printing sheet comprising a substrate on which are arranged, in face-sequence, coloring material layers which are different in hue and contain either of at least one dye represented by the formula (I), at least one dye represented by the formual (II) and at least one dye represented by the formulas (III)-(VI).