Developing device and image forming apparatus that suppress discharge of developer
AssigneeFUJIFILM Business Innovation Corp.
InventorTaichiro Okuno
Life of this patent
Estimating the term…
Abstract
A developing device including a holding body, a supply unit, a filling portion, a closing portion, and a duct portion is provided. The holding body holds a developer. The agitating unit agitates the developer. The supply unit supplies the developer that flows in from the agitating unit to the holding body. The filling portion is provided above the agitating unit and filled with the developer. The closing portion closes a lower portion of the filling portion, and causes the developer to drop from the filling portion into the agitating unit in a case where the closing portion is removed. The duct portion connects a space in the filling portion and a portion above the holding body.
Claims17
A developing device comprising:
- a holding body that holds a developer;
- an agitating unit that agitates the developer;
- a supply unit that supplies the developer that flows in from the agitating unit to the holding body;
- a filling portion provided above the agitating unit and filled with the developer;
- a closing portion that closes a lower portion of the filling portion, and causes the developer to drop from the filling portion into the agitating unit in a case where the closing portion is removed;
- a duct portion that connects a space in the filling portion and a portion above the holding body, wherein a space inside the duct portion is divided vertically from a space inside the developing device where the holding body resides;
- and
- a blocking portion that blocks a flow of air between the filling portion and the duct portion, and allows air to flow from the filling portion to the duct portion in a case where the blocking portion is removed.
Dependencies are inferred from the claim text.