Developing apparatus, process cartridge, and image forming apparatus

A developing apparatus comprising:

• a developing sleeve that bears magnetic developer on an outer circumferential surface thereof;
• a magnet roller disposed on an inner side of the developing sleeve;
• a container frame in which the magnetic developer is stored;
• and
• a stirring unit provided in the container frame and including a rotation shaft disposed in a direction along an axial direction of the developing sleeve, and a sheet-shaped stirring member attached to the rotation shaft to move with the rotation of the rotation shaft, the stirring unit stirring the magnetic developer in the container frame by the movement of the stirring member to move the magnetic developer toward the developing sleeve,
• wherein ends of the stirring member are disposed on an outer side of ends of the magnet roller in the axial direction of the developing sleeve.

A developing apparatus comprising:

• a developing sleeve that bears magnetic developer on an outer circumferential surface thereof;
• a magnet roller disposed on an inner side of the developing sleeve;
• a container frame in which the magnetic developer is stored;
• and
• a stirring unit provided in the container frame and including a rotation shaft disposed in a direction along an axial direction of the developing sleeve, and a sheet-shaped stirring member attached to the rotation shaft to move with the rotation of the rotation shaft, the stirring unit stirring the magnetic developer in the container frame by the movement of the stirring member to move the magnetic developer toward the developing sleeve,
• wherein a length of the stirring member in the axial direction of the developing sleeve is greater than a length of the magnet roller, and
• when seen from a direction orthogonal to the axial direction of the developing sleeve, a region corresponding to the magnet roller is present on an inner side of a region corresponding to the stirring member.