The present invention relates to a grounding structure of a metal rod and a rotary ground plate coupled to an inside of an OPC drum in an OPC drum of a laser printer. The rotary ground plate 52 integrally protruding 51 is coupled to the inner surface of the rotation gear 53 for rotation of the OPC drum 50, the coupling groove formed in the center of the rotary ground plate 52 and the gear 53 The rotating rod 55 grounded with the main body is closely inserted into the inner side of the 54, and an upper surface of the supporting plate 56 that is bent and bent from one side of the rotating ground plate 51 to the side of the rotating rod 55 is disposed. By being in direct contact with the body, the grounding point of the support plate is accurate when the rotary grounding plate and the rotating rod is grounded, so that the grounding performance of the rotary grounding plate is improved, and thus the ground of the aluminum rotary tube coupled to the outside of the rotary grounding plate. Improve performance On the other hand, the output of the laser printer is prevented due to poor grounding of the OPC drum is to improve the quality of the printer.
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