DEVELOPING APPARATUS

摘要

A developing apparatus includes a developing chamber for containing a developer, a developercarrying member for carrying and conveying the developer to a developing region, and a developersupplying member abutted rotatably to the developercarrying member. The developer-supplying member has surface-modifying powder at at least its surface. The powder has substantially no chargeability or a chargeability of a polarity equal to that of the developer and a magnitude in terms of an absolute value equal to or smaller than that of the developer. By application of the surface-modifying powder. The developing apparatus can obviate a partial tearing of a surface portion of the developer-supplying member leading to image defects and an increase in drive torque at the initial drive thereof.