| abstract |
PROBLEM TO BE SOLVED: Toner and developer for developing electrostatic image capable of forming stable image with stable toner particle size distribution, compatible with low temperature fixing system, good anti-offset property, and without contaminating fixing means and image. And an electrophotographic image forming apparatus and a process cartridge using the same. An organic solvent phase in which at least a functional group-containing polyester resin is dissolved, an active hydrogen-containing compound, and a colorant are dispersed in an aqueous medium phase in which resin fine particles are dispersed, and the functional group is dispersed. An electrostatic charge image developing toner that causes elongation reaction and / or cross-linking reaction between a group-containing polyester resin and the active hydrogen-containing compound, and forms particles from the resulting dispersion, wherein the organic solvent phase And an electrostatic acid image developing toner containing an organic acid compound. [Selection] Figure 1 |