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:
Aug. 02, 2005
Filed:
Dec. 27, 2000
Tsuyoshi Sano, Nagano, JP;
Shuichi Kataoka, Nagano, JP;
Koichi Murayama, Nagano, JP;
Kiyohiko Takemoto, Nagano, JP;
Kazuhide Kubota, Nagano, JP;
Bunji Ishimoto, Nagano, JP;
Tsuyoshi Sano, Nagano, JP;
Shuichi Kataoka, Nagano, JP;
Koichi Murayama, Nagano, JP;
Kiyohiko Takemoto, Nagano, JP;
Kazuhide Kubota, Nagano, JP;
Bunji Ishimoto, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink set, exhibiting good ink permeability and fixation, capable of yielding high quality images with no roughness, or an ink set capable of yielding text and/or images of outstanding light resistance, is provided. The ink set of the present invention comprises a dark ink composition and a light ink composition that, while being mutually the same color, are of different color density, and is characterized in that the dark ink composition and the light ink composition each comprise a pigment as a colorant and a resin as a dispersant, in that the ratio between the resin weight proportion Band the pigment weight proportion Pin the dark ink composition (i.e. B/P) is lower than the ratio between the resin weight proportion Band the pigment weight proportion Pin the light ink composition (i.e. B/P), and in that Band Bdiffer from each other.