Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashige Kasuya0
Yoshihiro Ogawa0
Yusuke Hasegawa0
Junko Nishiyama0
Shinichiro Abe0
Date of Patent
December 30, 2008
0Patent Application Number
111685060
Date Filed
June 29, 2005
0Patent Primary Examiner
Patent abstract
According to the present invention, a magnetic toner comprising magnetic toner particles including at least a binder resin and magnetic particles is provided, wherein an isoelectric point of the magnetic particles is pH 4.0 or less, in order to provide a magnetic toner stably having an optimum charged amount regardless of environments so that a high-quality image having high blackness can be formed without causing any ghost phenomenon.
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