Patent ID: 6737210
Filing Date: 2004-05-18
Classification: G03G

Abstract:
A set of toners for use in electrophotography, comprising a plurality of color toners including at least a black toner, wherein each of said color toners other than said black toner comprises a coloring agent, and a resin component with a weight-average molecular weight (Mw) of 10,000 to 25,000, and a number-average molecular weight (Mn) of 2,000 to 7,000, with the ratio of said weight-average molecular weight (Mw) to said number-average molecular weight (Mn), Mw/Mn, being 3 to 10, and said black toner comprises a coloring agent, said resin component, and at least one sub-resin component which is non-compatible with said resin component in an amount of 1 to 10 parts by weight to 100 parts by weight of said resin component.