Patent ID: 8911923

Claim:
A toner for developing an electrostatic charge image comprising: toner particles containing a colorant, a binder resin, and a release agent; and an external additive that contains inorganic particles having hydrophobization-treated surfaces and a fluorine atom-containing oil on the hydrophobization-treated surfaces, wherein an amount of the fluorine atom-containing oil is from 7% to 30% by weight with respect to a total weight of the external additive, a weight ratio of the hydrophobization treatment agent to the fluorine atom-containing oil is in a range of 1:30 to 50:1, the inorganic particles are treated with the fluorine atom-containing oil prior to incorporation of the external additive into the toner, and the fluorine atom-containing oil is selected from perfluoropolyether, polyhexafluoropropylene epoxide, polychlorotrifluoroethylene, polytetrafluoroethylene, and perfluorocarbon.