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. 23, 2014
Filed:
Feb. 26, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Naotaka Ikeda, Suntou-gun, JP;
Takayuki Toyoda, Yokohama, JP;
Masashi Kawamura, Yokohama, JP;
Hidekazu Fumita, Gotemba, JP;
Emi Watanabe, Suntou-gun, JP;
Yasuhiro Hashimoto, Mishima, JP;
Yuhei Terui, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a toner manufactured in an aqueous solvent, whereby a satisfactory image density can be obtained and the toner laid-on level on a recording medium can be reduced with a normal added concentration of pigment without adding a large quantity of pigment to the toner. The toner is manufactured in an aqueous medium by the suspension polymerization or dissolution suspension method and contains a binder resin, a pigment and an azo compound. The azo compound is a specific azo compound, and the absolute value of the difference in zeta potential between the binder resin and the azo compound is 25 mV or less.