| 摘要 |
An image drum for selectively adsorbing a toner thereon so as to form an image in a printing apparatus. The image drum provides a new manufacturing method which can connect ring electrodes formed on the circumferential surface of a drum body and a printed circuit board including a control chip for supplying a necessary voltage to each ring electrode without using a laser processing. Namely, various manufacturing methods, such as a method of forming a connection hole by initially forming a bead made of a hydrophobic material or a conductive bump and removing the initially formed bead or conductive bump, and forming a ring electrode by filling a conductive material in the connection hole, and the structure thereof are provided. Accordingly, due to a simplified manufacturing process, manufacturing cost are reduced and an image drum may be more widely disseminated.
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