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. 05, 2010
Filed:
Jan. 27, 2006
Jong-in Lee, Suwon-si, KR;
Seung-min Ryu, Yongin-si, KR;
Jong-in Lee, Suwon-si, KR;
Seung-min Ryu, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An ink composition includes a self-dispersible coloring agent that includes an ionic group and a non-ionic linear or cyclic ester or amide moiety on a surface of the coloring agent at a mole ratio of about 1:10 to about 10:1, an organic solvent, and water. The coloring agent has a modified surface, so that stability of the ink can be increased due to an interaction between the coloring agent and the organic solvent, the particle size of the coloring agent can be kept uniform, an adhering force with respect to a substrate is increased to minimize bleeding between colors of a printed image, waterfastness and rubfastness in dry and wet conditions are increased to obtain an excellent colorfastness, and resulting in a high quality printed image and an excellent storage stability.