Developing apparatus having rotatable developer supply member for developer carrying member.

摘要

A developing apparatus includes a developer carrying member (3) for carrying a magnetic developer (7), the developer carrying member (3) is provided with a plurality of magnetic poles (4a-4d); a regulating member (5) for regulating a layer thickness of the developer (7) on aid developer carrying member (3); an elastic rotatable member (6), disposed upstream of a developer regulating position of the regulating member (5) with respect to a movement direction (b) of the developer carrying member (3), for supplying the magnetic developer (7) onto the developer carrying member (3); wherein a surface of the elastic rotatable member (6) is of unicellular foamed material.