Fuji Xerox Co., Ltd.

Norimasa Ozora

Daisuke Ishizuka

Noriyuki Mizutani

Kotaro Yoshihara

Narumasa Sato

Yuka Kawamoto

Erina Saito

A toner for developing an electrostatic charge image includes toner particles containing a binder resin; and an external additive containing silica particles, in which a coefficient of variation of a Si content is determined by determining the Si content in 0.5 &#x3bc;m&#xd7;0.5 &#x3bc;m square regions in a surface of each of the toner particles after performing a process of dispersing the toner in water and drying the dispersed toner, and an amount of change between this coefficient of variation of the Si content and a coefficient of variation of a Si content before the process ((coefficient of variation of Si content after process)&#x2212;(coefficient of variation of Si content before process)) is 0.05 or more and 0.60 or less.

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Kanagawa, Japan

Norimasa Ozora