An image forming apparatus includes: an image forming part; a paper dust collecting roller that collects paper dust from a sheet; a conveying roller that is opposed to the paper dust collecting roller and conveys the sheet; a paper dust removing member that contacts the paper dust collecting roller for removing the paper dust therefrom; a supporting member that extends in a width direction of the sheet; a swing shaft for swinging the supporting member; and a pressing member that presses the supporting member for contacting the paper dust removing member with the paper dust collecting roller. The supporting member includes: a guiding surface that contacts the sheet conveyed along the conveying path for guiding the sheet toward the image forming part along the conveying path; and a paper dust receiving part which receives the paper dust removed by the paper dust removing member.