| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner controlling the glossiness of a black portion in a multi-color image in multi-color formation, thereby producing a well-balanced, good-looking image as the whole of the image, and also producing a mat monochrome image in monochrome image formation, which is preferred by the user. SOLUTION: In a plurality of electrophotographic toners at least including a black toner, each of the plurality of the color toners other than the black toner may be an electrophotographic toner comprising 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 the weight-average molecular weight (MW) to the number-average molecular weight (MN), MW/MN, being 3 to 10, and the black toner may be an electrophotographic toner comprising a coloring agent, the resin component, and at least one immiscible resin in an amount of 1 to 10 parts by weight to 100 parts by weight of the resin component. COPYRIGHT: (C)2008,JPO&INPIT
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