Patent ID: 9285701
Filing Date: 2016-03-15
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: an image carrier carrying a toner image; a charging member electrically charging the image carrier; a voltage applying part applying voltage to the charging member; a current measuring part measuring current flowing into the charging member; and a controlling part controlling applied voltage of the voltage applying part and deciding, when a predetermined voltage is applied to the charging member for a predetermined time by the voltage applying part, if an increase quantity of the current measured by the current measuring part exceeds a predetermined threshold value, that at least one of the image carrier and the charging member is in an abnormal state, wherein the image carrier is a rotatably arranged photosensitive drum, and the controlling part controls the photosensitive drum to stop rotating, when the predetermined voltage is applied to the charging member for the predetermined time by the voltage applying part.