| 摘要 |
PURPOSE:To provide a satisfactory image over a long period by using a specified polypropylene as a low molecular weight releasing agent. CONSTITUTION:Any one coloring agent of cyan, magenta, and yellow, a binder resin, and a low molecular weight releasing agent are mainly contained. As the low molecular weight releasing agent, polypropylene is used. The stereoscopic structure of the polypropylene contains at least isotactic polypropylene and atactic polypropylene, wherein the content of the isotactic polypropylene is 80% or more, the crystallinity of the polypropylene is 30% or more, the melting point of the polypropylene is within the range of 70-150 deg.C, and the difference between the melting start temperature and the melting end temperature is less than 50 deg.C. Thus, the filming to a developing sleeve and a photosensitive body and the fixation of a carrier to a spent blade are prevented, and a satisfactory image can be provided. |
