Method and device for preventing photosensitive drum pollution

The invention discloses a method and a device for preventing photosensitive drum pollution, and relates to the technical field of laser printer selenium drums. The device comprises a left isolating buckle, a right isolating buckle, an isolating buckle tail end and a handle, wherein the isolating buckle tail end is of a wedge-shaped slope structure; the left isolating buckle and the right isolatingbuckle are in parallel connected to the left end and the right end of the handle; and the handle is made of a tough material, is inverted-H-shaped, and is connected with the left isolating buckle andthe right isolating buckle. The distance between the isolating buckle at the left end and the isolating buckle at the right end is regulated according to lengths of laser holes of laser printer selenium drums of different models, the handle changes the shape according to stress intensity to adapt to selenium drums of different models; the tail ends of the isolating buckles at the two ends are inserted into positions, on i