Patent ID: 6821701
Filing Date: 2004-11-23
Classification: G03G

Abstract:
A toner being characterized in that the medium-resistance external additive coating ratio of toner particles of which mother particles have equivalent particle diameters smaller than an equivalent particle diameter of a mother particle diameter equal to the roughness of a developing roller or the mean particle diameter of the toner is set to be higher than a virtual reference curve in synchronous distribution of the equivalent particle diameters of synchronous medium-resistance external additive particles relative to the equivalent particle diameters of mother particles, wherein assuming that the medium-resistance external additive coating ratio of a toner particle of which a mother particle has an equivalent particle diameter equal to the roughness of a developing roller or the mean particle diameter of the toner is a reference value, the virtual reference curve is obtained to satisfy that the medium-resistance external additive coating ratio is constant at the reference value.