Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method

A developing apparatus for developing an electrostatic latent image formed on an electrophotographic photosensitive member, said developing device comprising:

• a developing roller for developing the electrostatic latent image with a developer;
• a developer accommodating portion for accommodating the developer;
• a developer feeding member for feeding the developer accommodated in said developer accommodating portion, said developer feeding member including, a flexible sheet for feeding the developer accommodated in said developer accommodating portion;
• a shaft for receiving a driving force to rotate;
• a mounting member for mounting said flexible sheet on said shaft such that flexible sheet is movable relative to said shaft in a longitudinal direction, in a widthwise direction and in a thickness direction.

A process cartridge detachably mountable ta electrophotographic image forming apparatus, comprising:

• an electrophotographic photosensitive member;
• a developing roller for developing an electrostatic latent image formed on said electrophotographic photosensitive member with the developer;
• a developer accommodating portion for accommodating the developer;
• a developer feeding member for feeding the developer accommodated in said developer accommodating portion, said developer feeding member including,
• a flexible sheet for feeding the developer accommodated in said developer accommodating portion;
• a shaft for receiving a driving force to rotate;
• a mounting member for mounting said flexible sheet on said shaft such that flexible sheet is movable relative to said shaft in a longitudinal direction, in a widthwise direction and in a thickness direction.