A new type of anti-contamination selenium drum

Disclosed is a selenium drum for automatically winding an anti-contamination separator, which relates to the field of laser printers and comprises a plastic member, a photosensitive drum, a charging roller, a reel, a reel gear and an anti-contamination separating sheet. The reel is mounted on a plastic part and can rotate when driven by force, one end of which passes through the inner wall and isconnected with the reel gear and fixed; The reel gear and the photosensitive drum gear are meshed; A long side of that anti-pollution isolate sheet is pasted and fix on the reel. After passing the selenium drum printing test, the non-fixed end of the anti-contamination separator is sandwiched between the photosensitive drum and the charging roller so that the photosensitive drum and the charging roller are spaced apart. As that end custom places the selenium drum into the selenium drum, When the printer drives the selenium drum, the spool gear rotates clockwise, and the spool pulls the anti-contamination separating sh