Nonmagnetic one-component toner and method for producing the same

摘要

A nonmagnetic one-component toner is produced by the steps of applying inorganic fine particles having an average particle diameter of not less than 30 nm and less than 100 nm to the surface of the toner having a binder resin and a colorant; and removing agglomerations of the inorganic fine particles remaining unadhered on the toner surface using a cyclone in a gas stream. The inorganic fine particles used in the present invention have a particle diameter in suitable ranges, so that the resulting toner can have suitable powder fluidity, and that these inorganic fine particles are less likely to be embedded into the inner portion of the toner by the nip pressure exerted by such members as the charging blade. Therefore, by using the toner of the present invention, a nonmagnetic one-component developing system with small variations in image density and image quality after continuous copying can be provided.