| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner capable of maintaining excellent charge build-up properties, charge stability and transferability without substantially causing smear onto carrier and charge rollers for a long period of time, and to provide a developer and an image forming apparatus using the toner, each capable of forming extremely high-quality images without substantially causing change in color tone for a long period of time and without substantially causing image degradation such as a reduction in image density and fogging. <P>SOLUTION: The toner contains at least a binder resin, a colorant and a charge controlling agent; wherein the charge controlling agent containing a metal compound composed of a trivalent or higher polyvalent aromatic oxycarboxylic acid as a center metal, the binder resin contains a polyester resin obtained by polycondensation of an alcohol component with a carboxylic acid component containing a rosin compound, the content of the rosin compound is not less than 5 mass% with respect to the total mass of the alcohol component and the carboxylic acid component, and the content of the an abietic acid in the toner is not more than 1 mass%. <P>COPYRIGHT: (C)2009,JPO&INPIT |
