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:
Jul. 22, 2008
Filed:
Sep. 29, 2006
Masaki Okubo, Koriyama, JP;
Hideyuki Otsuka, Koriyama, JP;
Kazuo Nemoto, Koriyama, JP;
Masami Ito, Koriyama, JP;
Eisuke Yamada, Koriyama, JP;
Masaki Okubo, Koriyama, JP;
Hideyuki Otsuka, Koriyama, JP;
Kazuo Nemoto, Koriyama, JP;
Masami Ito, Koriyama, JP;
Eisuke Yamada, Koriyama, JP;
Hodogaya Chemical Co., Ltd., Kanagawa, JP;
Abstract
The present invention is to provide a charge controlling agent and negatively chargeable toner that do not contain any toxic metal, are essentially free from the risk of evoking ignition or explosion, and can exhibit a high charge amount and rapid initial increase in charging. The charge controlling agent is a mono azo iron complex compound represented by Formula (1): wherein J represents H, alkali metal, ammonium, or alkyl ammonium, or two or more of those elements in combination.