Patent ID: 8275299
Filing Date: 2012-09-25
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a printing medium supply unit which supplies a printing medium; a plurality of image carrying bodies; a light scan unit which scans a beam to the image carrying bodies to form electrostatic latent images; a plurality of developing units which supply developers to the image carrying bodies to form visible images; a transfer unit which transfers the visible images from the image carrying bodies to the printing medium as a color image; and a fixing unit which fuses the color image to the printing medium, the transfer unit comprising: an intermediate transfer body to receive the images from the image carrying bodies, having a curved transfer surface, and having an ASKER-A hardness of about 25° to 40°; a transfer member having an ASKER-C hardness of about 45° to 70°, disposed in contact with the intermediate transfer body at a nip, and transferring the images from the intermediate transfer body to the printing medium at the nip; and a de-electrifying member to de-electrify the printing medium, disposed adjacent to an exit of the nip, and having a DC power and an AC power concurrently applied thereto, wherein the DC power has a voltage of about 200V to 800V and the AC power has a voltage of about |3.0| kV to |3.6| kV.