Patent ID: 7610002
Filing Date: 2009-10-27
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a rotatable image bearing member; a first rotatable developer carrying member, disposed so as to be opposed to said image bearing member, for carrying a magnetic one component developer to a first developing position to develop a latent image on said image bearing member; a second rotatable developer carrying member, disposed so as to be opposed to said image bearing member at a position downstream of said first developer carrying member with respect to a rotational direction of said image bearing member, for carrying the magnetic one component developer to a second developing position to develop a latent image on said image bearing member, wherein said second developer carrying member is rotatable in the same direction as a rotational direction of said first developer carrying member; a first magnetic member provided in said first developer carrying member and having a plurality of magnetic poles; and a second magnetic member provided in said second developer carrying member and having a plurality of magnetic poles, wherein said magnetic poles of said first magnetic member includes: wherein said magnetic poles of said second magnetic member include: