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:
Apr. 24, 2001
Filed:
Jun. 21, 1999
Applicant:
Inventors:
Yoichi Takada, Yokohama, JP;
Yoshihisa Takizawa, Machida, JP;
Shinya Mishina, Kawasaki, JP;
Mikio Sanada, Yokohama, JP;
Hisashi Teraoka, Kawasaki, JP;
Koichi Osumi, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 1/102 ;
U.S. Cl.
CPC ...
C09D 1/102 ;
Abstract
Disclosed herein is a pigment ink comprising self-dispersing type carbon black to the surface of which at least one hydrophilic group is bonded through another atomic group, an aqueous medium, and a silicon compound. The pigment ink can form images excellent in fastness properties such as water fastness and light fastness and character quality, can be efficiently ejected when applied to ink-jet recording and can also be stably ejected from a recording head irrespective of recording head and printing environment.