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:
Nov. 29, 2011
Filed:
Jun. 09, 2005
Tetsuya Yano, Tokyo, JP;
Takashi Kenmoku, Fujisawa, JP;
Tatsuki Fukui, Yokohama, JP;
Ako Kusakari, Tokyo, JP;
Chieko Mihara, Isehara, JP;
Tetsuya Yano, Tokyo, JP;
Takashi Kenmoku, Fujisawa, JP;
Tatsuki Fukui, Yokohama, JP;
Ako Kusakari, Tokyo, JP;
Chieko Mihara, Isehara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide: a charge control agent having negative chargeability, which contributes to environmental conservation and the like to an increased degree, has high performance (high charge amount, quick rise-up of charge, excellent stability with time, and high environmental stability), and has improved dispersibility; a toner for developing an electrostatic charge image containing the charge control agent; and an image forming method and an image forming apparatus each using the toner for developing an electrostatic charge image. A charge control agent for controlling a charged state of powder, characterized by including one or more units each represented by the following chemical formula (1) in a molecule.