A filter on top output bin of a printer is consisted of a box wherein a chamber inside of a box, filtering exit on the top of the box, sealing strips sealed along the edge of the filtering exit, filtering entrance under the box, anti-paper jam strips bored on two literal side of the filtering entrance, and an opening bored on a literal side of the box, a filtering net inside of the box is surrounded by frames, and electrostatic filter attached on the top of the filtering net. The filter can be placed on the top output bin on the printer, or be supported the box by having flexible holder adapted to a variety printer. The output papers won't be impacted into the filtering net by having anti-paper jam strips therefore filter can absorb toner emissions and odor so as to clear the air.