Patent ID: 8323864

Claim:
A toner to develop an electrostatic latent image, the toner comprising: a latex; a colorant; and a release agent, wherein the toner has a complex viscosity (η*) in a range of about 2.5×10 2 to about 1.0×10 3 Pa·s and a loss tangent (tan δ) in a range of about 1.3 to about 2.3 at a temperature of about 160° C., the η* is defined by a formula η*=(G′2+G″2)½/w, and the tan δ is defined by a formula G″/G′, where G′ is a storage elastic modulus and G″ is a loss elastic modulus as determined under the following conditions of an angular velocity being about 6.28 rad/s and at a temperature increasing at a rate of about 2.0° C./min, and the toner has a Si/Fe ratio in a range of about 5.0×10 −4 to about 5.0×10 −2 .