Patent ID: 8811832
Filing Date: 2014-08-19
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image carrier which is configured to carry an electrostatic latent image; a developing device, which is configured to use a developer including a toner and a carrier, and to develop the electrostatic latent image, and forms a visible toner image; plural toner supplying devices, each of which is configured to supply the toner in which mass ratio of an additive against the toner is different; and a control section which is configured to control a ratio of a toner supplying amount to be supplied from each of the plural toner supplying devices, wherein under a condition that toner consumption per a single print is low, the control section is configured to increase the toner supplying ratio of the toner including a high ratio of the additive, and under a condition that the toner consumption per the single print is high, the control section is configured to decrease the toner supplying ratio of the toner including a high ratio of the additive.