Abstract:
A heating roller including a resistive heating layer and a fusing device including the heating roller. By separately disposing a plurality of electrodes in an axis direction of the heating roller, and by independently controlling each electrode, the heating roller may correspond to various papers having different sizes. Accordingly, the temperature of the heating roller may be stably controlled.
Abstract:
An apparatus for and method of forming images. The apparatus includes a photosensitive member, a charging member configured to electrify a surface of the photosensitive member to a predetermined electric potential, an exposure member configured to form an electrostatic latent image on the electrified surface of the photosensitive member, and a developing member configured to develop a toner image on the surface of the photosensitive member on which the electrostatic latent image is formed. The developing member converts a toner disposed near the photosensitive member into a cloud state using ultrasonic oscillation and adheres the cloud-state toner to the electrostatic latent image due to a bias voltage applied between the developing member and the photosensitive member.