Patent ID: 9400458
Filing Date: 2016-07-26
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: an image bearing member that bears a toner image; a transfer member that forms a transfer portion between the image bearing member and the transfer member and transfers the toner image from the image bearing member to a recording material at the transfer portion; a transfer power supply that applies a transfer voltage to the transfer member; a neutralization member that is disposed further toward a downstream side than the transfer member in a direction of conveying the recording material so as to neutralize the recording material; a neutralization power supply that applies a neutralization voltage to the neutralization member; a first detection device that detects a current flowing in the neutralization member; and a control unit that controls at least the neutralization power supply, wherein the control unit changes a current value detected by the first detection device by changing a potential difference between the transfer voltage and the neutralization voltage and stores as a first potential difference the potential difference when the value detected by the first detection device exceeds a threshold, and the control unit executes neutralization control of controlling the neutralization voltage applied when neutralizing the recording material, based on the stored first potential difference and the transfer voltage.