Patent ID: 7447468

Claim:
A developing device, comprising: a casing configured to store developer; a first mixing conveying member having a first shaft portion arranged to rotate freely in the interior of the casing, and a first blade portion having a spiral shape formed on an outer circumferential portion of the first shaft portion; a second mixing conveying member parallel to the first mixing conveying member, the second conveying member having a second shaft portion arranged to rotate freely in the interior of the casing, and a second blade portion formed on the outer circumference portion of the second shaft portion; and a developer removing unit including a plurality of first scrape members aligned in an axial direction corresponding to a spiral pitch of the first blade portion and configured to contact the first blade portion, a plurality of second scrape members aligned in the axial direction corresponding to the spiral pitch of the second blade portion and configured to contact the second blade portion, and a retaining member mounted to the casing and configured to retain the plurality of the first scrape members and the plurality of the second scrape members.