Patent ID: 8488985

Claim:
An image forming apparatus in which a developer image is transferred by a transfer section from an image bearing body onto a recording medium, the image forming apparatus comprising: a memory that stores correction values for a transfer voltage, the correction values corresponding to changes in an operation status of the image forming apparatus; an apparatus usage information obtaining section that obtains information on the operation status that includes at least a number of rotations of the image bearing body per unit time and a period of time during which the transfer section is left idle; and a transfer voltage correcting section that corrects the transfer voltage based on the correction values and the information on the operation status that includes at least the number of rotations of the image bearing body per unit time and a period of time during which the transfer section is left idle, wherein if the number of rotations of the image bearing body per unit time is smaller than a reference value, said transfer voltage correcting section corrects the transfer voltage based on the correction values.