| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the local deterioration of an electrifying performance and to stably output a satisfactory image of high definition, even in the case of continuously printing the same images having extremely different printing ratios in the longitudinal position of an electrifying roller, and also, in the case of continuously printing small-sized papers, as for a cleanerless type image forming device employing an injection electrifying system. <P>SOLUTION: One-component developer containing conductive particles of ≥0.1% and ≤10% with reference to toner weight is stored in a developing unit. As for the triboelectrification polarity, the polarity of the conductive particle is opposite to that of the toner. The developer stored in the developing unit is stirred in the longitudinal direction and in the developer shifting direction by rotating a stirring member 4d wherein several oval rings 11 are attached with inclination to and along the core bar 11 parallel to the developing roller. <P>COPYRIGHT: (C)2003,JPO |
