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. 27, 2015
Filed:
Feb. 26, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Yasuhiro Hashimoto, Mishima, JP;
Takayuki Toyoda, Yokohama, JP;
Masashi Kawamura, Yokohama, JP;
Naotaka Ikeda, Suntou-gun, JP;
Hidekazu Fumita, Gotemba, JP;
Emi Watanabe, Suntou-gun, JP;
Yuhei Terui, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner is provided that, even in a small amount thereof, gives a satisfactory image density and that is free of image problems, e.g., fogging and offset resistance, even during long-term use and in a high-temperature, high-humidity environment. The toner contains a binder resin, a pigment, and a prescribed azo compound wherein, designating as (A) the solubility of the azo compound in a toluene-hexane solubility test and as (B) the solubility of the binder resin constituting the toner in the toluene-hexane solubility test, the (A) and the (B) satisfy the relationship |(B)−(A)|≦60.