Developing apparatus, process cartridge and image forming apparatus

A process cartridge comprising:

• an image bearing member for bearing a latent image;
• a developer container containing developer;
• a developer bearing member for bearing the developer within said developer container and for carrying the developer to a position opposed to an image bearing member;
• a first agitating member for agitating the developer within said developer container;
• and
• a second agitating member for agitating the developer within said developer container,
• wherein said second agitating member is positioned farther said first agitating member with respect to said image bearing member and an uppermost part of said second agitating member is higher than an uppermost part of said first agitating member, and
• wherein a height difference between said uppermost part of said first agitating member and said uppermost part of said second agitating member is not less than 10% and not more than 50% of an agitating diameter of said second agitating member.

An image forming apparatus comprising:

• an image bearing member for bearing a latent image;
• a developer container for containing developer;
• a developer bearing member for bearing the developer within said developer container and for carrying the developer to a position opposed to an image bearing member;
• a first agitating member for agitating the developer within said developer container;
• and
• a second agitating member for agitating the developer within said developer container,
• wherein said second agitating member is positioned farther than said first agitating member with respect to said image bearing member and an uppermost part of said second agitating member is higher than an uppermost part of said first agitating member, and
• wherein a height difference between said uppermost part of said first agitating member and said uppermost part of said second agitating member is not less than 10% and not more than 50% of an agitating diameter of said second agitating member.

A developing apparatus comprising:

• a developer container for containing developer;
• a developer bearing member for bearing and carrying the developer within said developer container to develop a latent image formed on an image bearing member;
• a first agitating member for agitating and carrying the developer within said developer container to said developer bearing member;
• and
• a second agitating member for agitating and carrying the developer within said developer container to said first agitating member,
• wherein, in developing, a whole of an agitating portion of said first agitating member is covered by the developer and a part of an agitating portion of said second agitating member is exposed from the developer.

A process cartridge detachably attachable to an image forming apparatus, comprising:

• an image bearing member;
• a developer container for containing developer;
• a developer bearing member for bearing and carrying the developer within said developer container to develop a latent image formed on said image bearing member;
• a first agitating member for agitating and carrying the developer within said developer container to said developer bearing member;
• and
• a second agitating member for agitating and carrying the developer within said developer container to said first agitating member,
• wherein, in developing, a whole of an agitating portion of said first agitating member is covered by the developer and a part of an agitating portion of said second agitating member is exposed from the developer.