| 摘要 |
PURPOSE:To improve various characteristics such the preservation of a fixing characteristic, by specifying a composition incorporating plural polymerizable monomers and a coloring agent. CONSTITUTION:This developer composition incorporates a first component in which the first polymerizable monomer composed of styrene or its derivatives and a second polymerizable monomer selected from a group composed of AC, MA and its derivatives, are polymerized and the second component in which the first and the second polymerizable monomers are polymerized at the differ ent component ratios. The ratio of the weight average molecular weight of the first component and that of the second component is >=50 and also the weight ratio of the mixture of the first component and the second component is defined to (10:90)-(30:70). By this method, the developer characteristics such as the better fixing characteristic,the offset characteristic, the preservation of the image can be simultaneously satisfied. |
