Patent ID: 8447194

Claim:
An image forming apparatus comprising: a developer bearing body for supplying developer to a surface of an image bearing body, on which an electrostatic latent image is formed by a latent image forming unit; a driving unit for rotating the developer bearing body; a speed control unit for determining a rotation speed of the developer bearing body; a drive control unit for controlling the driving unit so that the developer bearing body rotates at the determined rotation speed; a control unit for determining the amount of developer to be disposed of on the basis of the determined rotation speed and controlling disposal of the determined amount of developer on the surface of the developer bearing body to dispose of the determined amount of developer; a first counter for counting the number of light dots; and a second counter for counting the number of revolutions of the image bearing body; wherein the control unit performs the disposal of the developer before or after printing on a record medium; the latent image forming unit includes an exposing unit for irradiating the surface of the image bearing body with the light dots, thereby forming dots of the electrostatic latent image; and the determined rotation speed is a value based on an accumulation of the number of dots obtained by the first counter and an accumulation of the number of revolutions obtained by the second counter.