Patent ID: 8538282
Filing Date: 2013-09-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: one or a plurality of photosensitive drums; a plurality of chargers each having a grid, which are provided for the one photosensitive drum or are respectively provided for the plurality of photosensitive drums and charge the one or plurality of photosensitive drums; a voltage applying unit that generates a charging voltage and applies the generated charging voltage to the plurality of chargers in common; a plurality of grid constant voltage circuits which are respectively provided for the plurality of chargers, each of the plurality of grid constant voltage circuits including: at least one of second current detecting units which are respectively provided for at least one of the grid constant voltage circuits, and detect a second current flowing into the voltage control line; and a controller that controls the voltage applying unit such that a sum of the first current and the second current corresponding to one of the plurality of chargers becomes a predetermined current value.