Patent ID: 6911289

Claim:
A toner composition comprising toner particles, said particles comprising a binder resin and a release agent, wherein when the toner composition is pressed upon application of a pressure of 478 kg/cm 2 to form a toner plate, the toner plate has a surface having a coefficient of static friction of from 0.20 to 0.40, wherein the binder resin comprises a non-linear polymer A, a linear polymer B and a polymer C, wherein the polymer C is prepared by at least one of performing a condensation polymerization reaction and an addition polymerization reaction at a same time in a container using a mixture of monomers for the condensation polymerization reaction and the addition polymerization reaction; and performing a condensation polymerization reaction and an addition polymerization reaction independently in a container using a mixture of monomers for the condensation polymerization reaction and the addition polymerization reaction, and wherein the non-linear polymer A, the linear polymer B and the polymer C comprise a polymer unit of the same kind; and wherein the following relationships are satisfied: Tm ( A )> T ( C )> Tm ( B ) | Tg ( A )− Tg ( B )|<10(°C.) 30≦ Tm ( A )− Tm ( B )≦60(°C.) wherein Tm(A), Tm(B) and Tm(C) represent softening points of the non-linear polymer A, the linear polymer B and the polymer C, respectively; and Tg(A) and Tg(B) represent glass transition temperatures of the non-linear polymer A and the linear polymer B, respectively.