Patent ID: 7784177

Claim:
A method of manufacturing an image drum for selectively adsorbing a toner thereon so as to form an image in a printing apparatus, the method comprising: providing a hollow cylindrical mold having a plurality of mold grooves circumferentially cut in its inner circumferential surface; providing a core portion having a smaller diameter than a hollow of the mold and having a slit-shaped combination groove; filling a conductive material into the plurality of mold grooves, respectively, of the mold; inserting a control unit for individually applying a voltage to each terminal in the combination groove of the core portion, so that a conductive pattern corresponding to the conductive material is partially exposed; inserting the core portion into the mold so that the conductive pattern corresponds to the conductive material filled into each one of the plurality mold grooves; and forming a drum body to be integrally formed with the control unit and the conductive material, by filling a molten plastic into an opening between the mold and the core portion.