Patent ID: 6593051
Filing Date: 2003-07-15
Classification: G03G

Abstract:
A two-component developer comprising a toner formed of a binder resin, a colorant and an external additive; and a carrier,wherein a loss modulus Gâ€³t (frequency: 10 rad/s) of the toner at 170Â° C. satisfies 100&lE;Gâ€³t&lE;5000 (Pa), a storage modulus Gâ€²t (frequency: 10 rad/s) of the toner at 190Â° C. satisfies 10&lE;Gâ€²t&lE;3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2Ã—10âˆ’6 to 5Ã—10âˆ’6 m in size distribution of the toner, wherein a relationship DcÃ—TD/Dv of a volume average size Dc (m) of the carrier, a volume average size Dv(m) of the toner, and a mixed ratio of the toner concentration between the toner and the carrier TD is a value of 0.20 to 0.45.