| 摘要 |
PURPOSE: A toner composition for electrostatic latent image development, its preparation method and an electrostatic latent image developer composition containing the toner composition are provided, to allow excess amount of a narrow and uniform size distribution of toner particles (colorant) to be blended in the composition without the deterioration of a resin. CONSTITUTION: The toner composition comprises 3.0-30.0 wt% of a colorant; and the balance of a center resin particle which has a glass transition temperature of 40-90 deg.C, a weight average molecular weight of 5,000-40,000 g/mol and a volume average diameter of 3-12 micrometers and is coated with the colorant, wherein 80 wt% of the particle fall within 0.5-1.5 times of the volume average diameter. The center resin particle is a single resin or a mixture of a resin with at least one additive selected from a wax and a charge control agent. Preferably the resin is a polyester resin or a styrene copolymer resin; and the wax is at least one selected from the group consisting of a paraffin wax, an ester wax, an amide wax, a polyethylene wax, a polypropylene wax, a carnauba wax and a beads wax. The electrostatic latent image developer composition comprises the toner composition and a particle carrier, wherein the carrier is at least one compound selected from the group consisting of ferrite coated a surfactant, steel and iron powder.
|
