Patent ID: 8301044
Filing Date: 2012-10-30
Classification: G03G

Abstract:
1. An image forming device configured to perform image formation by transferring, onto a recording sheet, developer images respectively formed with electrostatic latent images developed with developers of multiple colors, comprising: a plurality of electrostatic latent image holding bodies configured to hold, on surfaces thereof, the electrostatic latent images to be developed with the developers of the multiple colors, respectively; a plurality of electrification control units configured to face the electrostatic latent image holding bodies and to charge or discharge the surfaces of the electrostatic latent image holding bodies, respectively; a current controller comprising a plurality of drive circuits corresponding to the plurality of electrification control units, the current controller being configured to independently control electric currents, each of which is supplied between the electrostatic latent image holding body and the electrification control unit for a corresponding one of the multiple colors via a corresponding one of the plurality of drive circuits, to be a constant target current; a maximum voltage output unit configured to receive a plurality of voltages applied between the plurality of electrostatic latent image holding bodies and the plurality of electrification control units and output a maximum voltage corresponding to a maximum absolute value from among the plurality of voltages; and a detector configured to detect malfunction of the electrification control units when the maximum voltage output by the maximum voltage output unit exceeds a predetermined value.