Patent ID: 7745088

Claim:
A non-magnetic toner, comprising: toner particles each containing at least a binder resin, a colorant, and a wax component; and an inorganic fine powder, wherein the toner particles have a core/shell structure; a polar resin is present in the shell; the shell has a Tg of 80°-120° C. or a peak molecular weight from 8,000 to 250,000; the core has a lower Tg or a lower peak molecular weight than the shell; and (1) when a temperature in a temperature range of 50 to 80° C. at which a loss tangent (tan) as a ratio of a loss elastic modulus (G″) of the toner to a storage elastic modulus (G′) of the toner shows a maximum is represented by T1, a storage elastic modulus of the toner at the temperature T1 (G′(T1)) (dN/m 2 ) satisfies a relationship of 5.00×10 7 ≦G′(T1)≧1.00×10 9 ; (2) a continuous temperature range with a width of 15° C. or more in which the loss tangent (tanδ) as a ratio of the loss elastic modulus (G″) of the toner to the storage elastic modulus (G′) of the toner is 0.80 to 2.00 is present in the temperature range of 50 to 80° C.; and (3) the loss tangent (tanδ) as a ratio of the loss elastic modulus (G″) of the toner to the storage elastic modulus (G′) of the toner is always 1.00 or more in a temperature range of 120 to 160° C.