Developing device and image-forming apparatus

A developing device comprising:

• a developing member that forms a toner image on a surface of a toner image carrier holding the toner image;
• a developer container that holds a developer comprising a toner wherein the developer container includes a partition member that partitions an interior of the developer container into a primary chamber and a secondary chamber, a collected-toner receiving port through which a collected toner that is collected from the toner image carrier is received into the developer container, a migration opening disposed on the partition member through which the developer held in the primary chamber is migratable to the secondary chamber, and a developer-supplying port through which the developer comprising the toner is supplied;
• a developer-conveying unit that is disposed in the primary chamber so as to convey the developer;
• a capturing unit that is disposed at the migration opening and captures a foreign material which migrates through the migration opening together with the developer;
• a foreign-material-removing unit that is disposed at the developer-conveying unit and moves the foreign material that is captured by the capturing unit out of the developer while the foreign-material-removing unit moves and contacts the capturing unit so as to remove the foreign material;
• and
• a discharging unit that discharges a redundant developer out of the developer container,
• the foreign material removing unit moving the removed foreign material to the discharging unit.

A developing device comprising:

• a developing member that forms a toner image on a surface of a toner image carrier holding the toner image;
• a developer container that holds a developer comprising a toner wherein the developer container includes a partition member that partitions an interior of the developer container into a primary chamber and a secondary chamber, a collected-toner-receiving port through which a collected toner that is collected from the toner image carrier is received into the developer container, and a migration opening through which the developer held in the primary chamber is migratable to the secondary chamber, the migration opening being disposed on the partition member;
• a developer-conveying unit that is disposed in the primary chamber so as to convey the developer;
• a capturing unit that is disposed in a conveying pathway of the toner, captures a foreign material and defines a plurality of openings though which the toner is migratable;
• a foreign-material-removing unit that is disposed at the developer-conveying unit and moves the foreign material that is captured by the capturing unit out of the developer container while the foreign-material-removing unit moves and contacts the capturing unit so as to remove the foreign material;
• and
• a foreign material container that holds the foreign material which is removed out of the developer container,
• wherein the portion of the capturing unit defining the plurality of openings extends to inside the foreign material container.

An image-forming apparatus comprising:

• a toner image carrier that holds a toner image;
• a developing device that forms a toner image on a surface of the toner image carrier;
• a cleaning device that cleans the surface of the toner image carrier by removing and collecting a toner on the toner image carrier;
• and
• a collected-toner-conveying mechanism that conveys the toner collected by the cleaning device to the developing device,
• wherein the developing device comprises:
• a developing member that forms the toner image on the surface of the toner image carrier;
• a developer container that holds a developer comprising the toner wherein the developer container includes a partition member that partitions an interior of the developer container into a primary chamber and a secondary chamber, and a migration opening through which the developer held in the primary chamber is migratable to the secondary chamber, the migration opening being disposed on the partition member;
• a developer-conveying unit that is disposed in the primary chamber so as to convey the developer;
• a capturing unit that is disposed at the migration opening and captures a foreign material which migrates through the migration opening together with the developer;
• and
• a foreign-material-removing unit that is disposed at the developer-conveying unit and moves the foreign material that is captured by the capturing unit out of the developer container while the foreign-material-removing unit moves and contacts the capturing unit so as to remove the foreign material.

An image-forming apparatus comprising:

• a toner image carrier that holds a toner image;
• a developing device that forms a toner image on a surface of the toner image carrier;
• a developer-supplying device that supplies the developing device with a developer comprising a toner;
• a cleaning device that cleans the surface of the toner image carrier by removing and collecting the toner on the toner image carrier;
• and
• a collected-toner-conveying mechanism that conveys the toner collected by the cleaning device to the developing device,
• wherein the developing device comprises:
• a developing member that forms the toner image on the surface of the toner image carrier;
• a developer container that holds the developer comprising the toner wherein the developer container includes a partition member that partitions an interior of the developer container into a primary chamber and a secondary chamber, and a migration opening through which the developer held in the primary chamber is migratable to the secondary chamber, the migration opening being disposed on the partition member;
• a developer-conveying unit that is disposed in the primary chamber so as to convey the developer;
• a capturing unit that is disposed at the migration opening and captures a foreign material which migrates through the migration opening together with the developer;
• a discharging unit that discharges a redundant developer out of the developer container;
• and
• a foreign-material-removing unit that is disposed at the developer-conveying unit and moves the foreign material that is captured by the capturing unit to the discharging unit while the foreign-material-removing unit moves and contacts the capturing unit so as to remove the foreign material.