Process cartridge and image forming system

A process cartridge detachably mountable to a main body of an image forming system, said process cartridge comprising:

• a frame;
• an electrophotographic photosensitive member;
• a toner bearing member for transporting toner to said electrophotographic photosensitive member;
• a magnet disposed within said toner bearing member;
• an attachment member, contacting each of said electrophotographic photosensitive member and said magnet to commonly support said electrophotographic photosensitive member and said magnet, for attaching said electrophotographic photosensitive member and said magnet to said frame, said attachment member being separably attached to said frame;
• and
• an earth contact, attached to said attachment member, for earthing said electrophotographic photosensitive member to the main body when said process cartridge is mounted onto the main body.

A process cartridge removably mounted onto a main body of an image forming system, comprising:

• a frame;
• a photosensitive drum;
• a developing sleeve and a magnet supplying a toner to said photosensitive drum for developing a latent image formed on said photosensitive drum, said magnet being disposed in said developing sleeve;
• one end of said photosensitive drum being supported by a shaft, and one end of said magnet being supported by a flange provided on an end of said developing sleeve;
• an attachment member being separably attached to said frame and contacting the one end of said photosensitive drum and the one end of said magnet to commonly support said photosensitive drum and said magnet, for attaching the one end of said photosensitive drum and the one end of said magnet to said frame;
• and
• said attachment member including an earth contact attached to said attachment member for earthing said photosensitive drum to the main body when said process cartridge is mounted onto the main body, and a developing bias contact attached to said attachment member for providing a developing bias from the main body to said developing sleeve when said process cartridge is mounted onto the main body.

An attachment member for use with a process cartridge removably mounted onto a main body of an image forming apparatus, said process cartridge including a frame, a photosensitive drum, a developing sleeve, and a magnet for supplying a toner to the photosensitive drum for developing a latent image formed thereon, the magnet being disposed in the developing sleeve, said attachment member comprising:

• a base member;
• a first abutment portion, provided on said base member to be abutted against the photosensitive drum for supporting the photosensitive member;
• a second abutment portion provided on said base member to be abutted against the magnet for supporting the magnet;
• an earth contact attached to said attachment member for earthing the photosensitive drum to the main body;
• and
• a developing bias contact attached to said attachment member for providing a developing bias from the main body to the developing sleeve when the process cartridge is mounted onto the main body,
• wherein said attachment member contacts each of the photosensitive drum and the magnet to commonly support the photosensitive drum and the magnet for attaching the photosensitive drum and the magnet to the frame, said attachment member being separably attached to the frame.