Patent ID: 8699924
Filing Date: 2014-04-15
Classification: G03G

Abstract:
1. A developing apparatus comprising: a developing container configured to accommodate a magnetic developer; a first developer carrying member rotatably fixed to the developing container and configured to carry and convey the magnetic developer; a second developer carrying member provided so as to be swingable around the first developer carrying member and configured to carry and convey the magnetic developer, which is regulated at a position opposing the first developer carrying member; a first magnetic field generating member provided inside the first developer carrying member, the first magnetic field generating member having a plurality of magnetic poles including at least a first magnetic pole provided at a position opposing the second developer carrying member; a second magnetic field generating member provided inside the second developer carrying member, the second magnetic field generating member having a plurality of magnetic poles including at least a second magnetic pole of a different polarity from that of the first magnetic pole at a position opposing the first magnetic pole; a connecting member connecting the first and second developer carrying members and configured to swing together with the second developer carrying member; an urging member configured to urge the second developer carrying member toward an image bearing member; a first positioning member configured to regulate rotation of the first magnetic field generating member and perform positioning of the first magnetic field generating member in a peripheral direction thereof; and a second positioning member configured to regulate rotation of the second magnetic field generating member and perform positioning of the second magnetic field generating member in a peripheral direction thereof, wherein both of the first positioning member and the second positioning member are connected to the connecting member.