Patent ID: 8437678
Filing Date: 2013-05-07
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a developer bearing member configured to bear a developer to develop a latent image formed on an image bearing member; a developer regulating member configured to regulate an amount of the developer carried on the developer bearing member; a voltage application unit that can apply a plurality of direct current voltages of different values between the developer bearing member and the developer regulating member; and a current detection unit that can detect a direct current flowing in the developer regulating member, wherein the image forming apparatus is capable of executing a detection control operation to cause the current detection unit to detect a change of the direct current flowing in the developer regulating member while changing a value of the direct voltage applied by the voltage application unit when the latent image is not being developed, and wherein the image forming apparatus sets a direct current voltage value Vb applied by the voltage application unit when developing the latent image after executing the detection control operation, so that the following expression is satisfied: |Vb|>|Vbmin|, where Vbmin is a direct current voltage value being applied by the voltage application unit when the detection control operation is executed and the direct current voltage detected by the detection unit is a minimum value.