Process cartridge and electrophotographic image forming apparatus

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, comprising:

• an electrophotographic photosensitive member;
• a developing member for developing a latent image formed on the photosensitive member;
• a toner accommodating portion for accommodating toner to be used for development of the latent image by said developing member;
• a toner stirring member for stirring the toner accommodated in said toner accommodating portion;
• a driving force transmission member for transmitting rotational driving force to said toner stirring member to rotate said stirring member;
• wherein said driving force transmission member is penetrated through an opening provided in said toner accommodating portion;
• a locking member, provided inside of said toner accommodating portion to prevent said driving force transmission member from dropping out of said toner accommodating portion through said opening;
• a driving member for driving said driving force transmission member, wherein said driving member is provide outside said toner accommodating portion;
• wherein said drive transmission member is connected for axial movement to said driving member by a shaft coupling;
• and
• an urging member, between said driving member and said driving force transmission member, for repelling said driving member and said driving force transmission member from each other in the axial direction.

An electrophotographic image forming apparatus for forming an image on a recording material, to which a process cartridge is detachably mountable, said apparatus comprising:

• (a) a mounting portion for mounting a process cartridge, said process cartridge including:
• an electrophotographic photosensitive member;
• a developing member for developing a latent image formed on the photosensitive member;
• a toner accommodating portion for accommodating toner to be used for development of the latent image by said developing member;
• a toner stirring member for stirring the toner accommodated in said toner accommodating portion;
• a driving force transmission member for transmitting rotational driving force to said toner stirring member to rotate said stirring member;
• wherein said driving force transmission member is penetrated through an opening provided in said toner accommodating portion;
• a locking member, provided inside of said toner accommodating portion to prevent said driving force transmission member from dropping out of said toner accommodating portion through said opening;
• a driving member for driving said driving force transmission member, wherein said driving member is provided outside said toner accommodating portion;
• wherein the driving force is transmitted from said driving member to said driving force transmission member such that driving force transmission member receives thrust force toward said toner accommodating portion through a projection having an inclined surface extending in a direction crossing with a rotational direction of said driving member and an engaging portion engaging with the inclined surface of said projection;
• said apparatus further comprising:
• (b) a feeding member for feeding the recording material.

An electrophotographic image forming apparatus for forming an image on a recording material, to which a process cartridge is detachably mountable, said apparatus comprising:

• (a) a mounting portion for mounting a process cartridge, said process cartridge including:
• an electrophotographic photosensitive member;
• a developing member for developing a latent image formed on the photosensitive member;
• a toner accommodating portion for accommodating toner to be used for development of the latent image by said developing means;
• a toner stirring member for stirring the toner accommodated in said toner accommodating portion;
• a driving force transmission member for transmitting rotational driving force to said toner stirring member to rotate said stirring member;
• wherein said driving force transmission member is penetrated through an opening provided in said toner accommodating portion;
• a locking member, provided inside of said toner accommodating portion to prevent said driving force transmission member from dropping out of said toner accommodating portion through said opening;
• a driving member for driving said driving force transmission member, wherein said driving member is provided outside said toner accommodating portion;
• wherein said drive transmission member is connected for axial movement to said driving member by a shaft coupling;
• and
• an urging member, between said driving member and said driving force transmission member, for repelling said driving member and said driving force transmission member from each other in the axial direction;
• said apparatus further comprising:
• (b) a feeding member for feeding the recording material.