Patent ID: 6468706
Filing Date: 2002-10-22
Classification: G03G

Abstract:
A two-component developer consisting of a toner, which contains at least a resin and a colorant and to which an external additive is added, and a carrier;wherein a number average molecular weight of said toner is 3,000 or less; wherein molecules having a molecular weight of 1,000 or less are contained at 40 number % or more, and wherein said carrier satisfies general formula (1) as follows: 3,000,000&lE;&sgr;1000Ã—Dc3&lE;20,000,000â€ƒâ€ƒ(1) wherein &sgr;1000 represents a magnetization in emu/g of a carrier at 1,000 oersted; and wherein Dc represents a volume average particle diameter in &mgr;m of said carrier; wherein the volume average particle diameter of said carrier is not larger than 65 &mgr;m.