Patent ID: 8861994

Claim:
An image forming apparatus comprising: a latent image carrier configured to carry a latent image formed thereon in accordance with an input of an image forming job; a development device configured to develop the latent image with a two-component developer including toner and carrier, to thereby form a toner image to be transferred to a recording medium; a toner supply device configured to supply, at predetermined intervals, the development device with toner by an amount consumed in the development of the image; a forced toner consumption controller configured to execute a forced toner consumption control of causing the toner in the development device to adhere to a non-image area in a surface of the latent image carrier and be forcibly consumed; a toner supply controller configured to execute a toner supply control of causing the toner supply device to supply the development device with toner to make a toner concentration in the developer of the development device approach a specific target toner concentration; and a pre-job controller configured to, upon receipt of the input of the image forming job, and before the start of image formation of the image forming job, acquire a toner consumption index value serving as an index of toner consumption per image to be formed by the input image forming job, determine a specific target image density based on the acquired toner consumption index value, and execute a previous toner consumption and supply control and then a previous image density adjustment control, the previous toner consumption and supply control causing the forced toner consumption controller to execute the forced toner consumption control, and causing the toner supply controller to execute the toner supply control to make the toner concentration in the developer of the development device subjected to the forced toner consumption control approach the specific target toner concentration, and the previous image density adjustment control adjusting one or more image forming conditions to make an image density after the previous toner consumption and supply control approach the specific target image density.