Image forming apparatus including moisture removal mechansism for removing mositure on surface of photosensitive drum

摘要

An image forming apparatus has an image carrying body, a first electrically conductive member, a bias application device, and a controller. The first electrically conductive member makes contact with the photosensitive layer of the image carrying body The bias application device applies a bias containing an AC bias to the first electrically conductive member. The controller controls the bias application device. The image forming apparatus can execute, while no image formation is being performed, a temperature raising mode in which, with the first electrically conductive member in contact with the image carrying body outside the image formation region, an AC bias having a peak-to-peak value twice as high as the discharge start voltage between the first electrically conductive member and the image carrying body is applied to the first electrically conductive member to raise the temperature of the surface of the image carrying body.

主权项

1. An image forming apparatus comprising:
an image carrying body which has a photosensitive layer formed on a circumferential surface thereof; a first electrically conductive member which makes contact with the photosensitive layer of the image carrying body; a bias application device which applies a bias containing an AC bias to the first electrically conductive member; and a controller which controls the bias application device, wherein the image forming apparatus
performs image formation on a surface of the image carrying body while rotating the image carrying body, andis capable of executing, while no image formation is being performed, a temperature raising mode in which, with only the first electrically conductive member in contact with the image carrying body outside an image formation region, an AC (alternating-current) bias having a peak-to-peak value twice as high as a discharge start voltage between the first electrically conductive member and the image carrying body is applied to the first electrically conductive member to raise temperature of the surface of the image carrying body.