| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive charge type magnetic one-component toner for developing an electrostatic latent image by which fixation in a low temperature region is performed without deteriorating offset properties, blocking properties, and image characteristics, even though the toner is a magnetic one-component toner. SOLUTION: The positive charge type magnetic one-component toner has a polystyrene based resin as a main resin component and contains a crystalline polyester resin and wax, and to which 35 to 60wt.% magnetic powder per total quantity of the toner is added. When the bottom value of the peak of endothermic reaction of the crystalline polyester resin measured by a DSC and the melting point of the wax measured by the DSC are defined as Cmp (°C) and Wmp (°C), respectively, and relations of 80°C≤Cmp, Wmp≤120°C, and ¾(Cmp-Wmp)¾≤20 are satisfied. COPYRIGHT: (C)2004,JPO&NCIPI |
