TONER AND EXTERNAL ADDITIVE FOR TONER

摘要

Provided is a toner, including: a toner particle; and an organic-inorganic composite fine particle on a surface of the toner particle, in which the organic-inorganic composite fine particle includes: a resin fine particle; and an inorganic fine particle embedded in the resin fine particle, and part of which is exposed to a surface of the composite fine particle, and in which the composite fine particle satisfies the following relationships: (i) in viscoelasticity measurement of the composite fine particle, when the loss elastic modulus thereof at a temperature T (° C.) is represented by G″T [dN/m2], a change ratio d(Log(G″T))/dT of a common logarithm of the loss elastic modulus has a minimum in a temperature range of from 60° C. to 150° C., and the minimum is less than −0.10; and (ii) the loss elastic modulus (G″180) thereof at a temperature of 180° C. is 1.0×104 dN/m2 or more and 1.0×107 dN/m2 or less.

主权项

1. A toner, comprising:
a toner particle; and an organic-inorganic composite fine particle on a surface of the toner particle, wherein the organic-inorganic composite fine particle comprises:
a resin fine particle; andan inorganic fine particle which is embedded in the resin fine particle, and part of which is exposed to a surface of the organic-inorganic composite fine particle, and wherein the organic-inorganic composite fine particle satisfies the following relationships (i) and (ii): (i) in viscoelasticity measurement of the organic-inorganic composite fine particle, when a loss elastic modulus thereof at a temperature T (° C.) is represented by G″T [dN/m2] and a change ratio of a common logarithm of the loss elastic modulus is represented by d(Log(G″T))/dT, the d(Log(G″T))/dT has a minimum in a temperature range of from 60° C. 150° C., and the minimum is less than −0.10; and (ii) in the viscoelasticity measurement of the organic-inorganic composite fine particle, when a loss elastic modulus thereof at a temperature of 180° C. is represented by G″180, the G″180 is 1.0×104 dN/m2 or more and 1.0×107 dN/m2 or less.