Patent ID: 8326171
Filing Date: 2012-12-04
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: a developing device configured to perform development by sticking a developer to an electrostatic latent image formed on a surface of an image carrier; and a voltage generation circuit configured to apply a developing bias voltage in which a direct voltage is superimposed on an alternating voltage to the developing device, wherein the voltage generation circuit comprises: a transformer configured to generate the alternating voltage to be applied as the developing bias voltage on a secondary winding by an effect of a primary winding; a capacitor that is connected to a first end of the primary winding of the transformer; a first voltage generating unit that is connected to a second end of the primary winding of the transformer different from the first end and is configured to generate a first voltage; a second voltage generating unit that is connected to the first end of the primary winding of the transformer via the capacitor and is configured to generate a second voltage having a voltage value different from the first voltage; and a controller configured to perform control so as to store an electric charge in the capacitor with the first voltage and the second voltage before the alternating voltage is generated by the effect of the primary winding of the transformer.