Developing apparatus, cartridge, and image forming apparatus

A developing apparatus comprising:

• a developer bearing member configured to bear a developer on a surface in a developing operation;
• a regulating member configured to come in contact with the developer bearing member and regulate layer thickness of the developer born on the surface of the developer bearing member;
• a development chamber provided with the developer bearing member and the regulating member and having an opening;
• a storage chamber configured to store the developer;
• and
• a conveying member provided in the storage chamber and configured to convey the developer stored in the storage chamber to the development chamber through the opening,
• the developing apparatus collecting, after developer on an image bearing member is transferred onto a transfer material, the developer remaining on the image bearing member into the storage chamber,
• wherein when the developing operation is performed,
• a bottom section of the development chamber is located above a bottom section of the storage chamber in a vertical direction, and
• a contact region of the developer bearing member in contact with the regulating member is located directly above the opening in the vertical direction.