Patent ID: 8554102

Claim:
A developing device comprising: a development roller that holds developer containing toner and carrier, rotates and transports the developer to a development area, and develops a latent image using the toner, the development area opposing an image holding member that holds the latent image; a housing that has a first opening that opens towards the image holding member, wherein the housing holds the development roller so that the development area of the development roller is exposed from the first opening, the housing containing the developer therein; an airflow path that has a second opening that opens towards the image holding member at a location below the first opening; a blower that causes air in the airflow path to be sent in a direction in which the toner scattered between the housing and the image holding member is sucked from the second opening; and a magnetic plate that is disposed in the housing, the magnetic plate opposing an end portion of the development roller in a direction of an axis of rotation of the development roller and extending so as to surround the development roller in a direction of rotation of the development roller, wherein the housing has a suction hole, the suction hole being formed between an edge of the magnetic plate at a side of a lower edge of the first opening and the lower edge of the first opening, the suction hole being connected to the airflow path, the suction hole sucking the developer that has leaked out from the housing into the airflow path.