Developing device and image forming apparatus

A developing device, comprising:

• a developer container that stores developer containing toner, the developer container having an opening at a position facing an image carrying member;
• and
• a developer carrying member that is arranged inside the developer container, the developer carrying member being exposed out of the developer container through the opening, the developer carrying member carrying the toner to feed the toner to the image carrying member,
• wherein
• the developer carrying member includes:
• a shaft;
• a sleeve that is supported so as to be rotatable about the shaft, the sleeve rotating while carrying the toner on an outer circumferential face thereof;
• and
• a magnet that is arranged inside the sleeve and that extends along an axis of the developer carrying member,
• the developer container includes:
• a duct that lets air in the developer container flow out of it;
• an intake port that is open above the developer carrying member and through which an inside of the developer container and an inside of the duct communicating with each other;
• and
• a first filter that covers the intake port, and
• edges of the first filter at one side and at another side in an axial direction of the developer carrying member are both located within a range opposite the magnet as seen from a direction perpendicular to the axial direction.