Patent ID: 8594519

Claim:
An image forming apparatus comprising: a latent image carrying member that carries a latent image; an electrifying part that electrifies a surface of the latent image carrying member; a latent image writing part that writes the latent image on the latent image carrying member; a developing part that develops the latent image on the latent image carrying member by using toner and obtains a toner image; a transferring part that transfers the toner image on the latent image carrying member to a surface of an endless moving member in which the surface is moved in an endless manner or a recording member held on the surface of the endless moving member; a toner container that holds the toner to be supplied to the developing part; a remaining amount detecting part that detects a toner remaining amount in the developing part; a toner supplying part that supplies the toner to the developing part from the toner container when the remaining amount detecting part detects that the toner remaining amount in the toner developing part is equal to or less than a predetermined toner amount value; a fog detecting part that detects fog of an image; and a determining part that, when the remaining amount detecting part detects that the remaining toner amount in the developing part is equal to or less than the predetermined toner amount value, forms a fog detecting image, the fog detecting image being detected by the fog detecting part, and determines, based on a detection result of the fog detecting part for the fog detecting image, whether a toner ejecting process of ejecting the toner remaining in the developing part to the latent image carrying member is carried out before supplying the toner to the developing part by the toner supplying part.