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US 7,402,369 B2Granted
Mono azo iron complex compound, and charge controlling agent and toner using the same
AssigneeHodogaya Chemical Co., Ltd.
InventorsMasaki Okubo, Hideyuki Otsuka, Kazuo Nemoto, Masami Ito, Eisuke Yamada
Life of this patent
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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.
Claims10
A mono azo iron complex compound represented by Formula (1):
- wherein J represents H, alkali metal, ammonium, or alkyl ammonium with alkyl groups having 1 to 8 carbon atoms, or two or more of these elements in combination.
Dependencies are inferred from the claim text.