Patent ID: 7664412

Claim:
An image forming apparatus comprising: an image forming section which includes a latent image carrier which is constructed to carry an electrostatic latent image and a charger unit which charges the latent image carrier to a predetermined surface potential, wherein an electrostatic latent image, which is formed on a surface of the latent image carrier, is developed with toner to form a toner image; and a controller unit which performs an adjusting operation to adjust operating conditions of the image forming section based on a density detection result of a toner image which is formed by the image forming section as a patch image, wherein the controller unit determines execution timing of the adjusting operation based on timing information related to variation over time in charge property of the latent image carrier, the charger unit includes a discharging electrode which is closely disposed to the surface of the latent image carrier, and the controller unit controls charge property of the latent image carrier by adjusting the amount of current which is supplied to the discharging electrode based on the timing information, as well as executing the adjusting operation when the amount of current is changed.