| 摘要 |
The purpose of the present invention is to provide a black toner for electrostatic-image development which can satisfy image density and hue and can be inhibited from causing transfer failure even when exposed to a high-temperature high-humidity environment for a long period. The present inventors diligently made investigations in order to solve the problem. As a result, the inventors discovered that for obtaining a black toner which retains intact transferability and can retain the black hue, it is most effective to make the carbon black retain a moderate dispersed-pigment diameter in the toner. The inventors further made investigations on the basis of this finding and, as a result, have completed the invention. |
