Patent ID: 8849173
Filing Date: 2014-09-30
Classification: G03G

Abstract:
1. A developer collecting device comprising: a housing in which an opening disposed opposite to a developer holding member with developer held thereon is formed to extend in a direction perpendicular to a moving direction of the developer holding member; a collection member comprising a blade with a free end that is disposed along an edge of the opening downstream in the moving direction, is capable of coming in contact with and being separated from the developer holding member, and that removes the developer from an outer peripheral surface and collects the detached developer in the housing when coming in contact with the outer peripheral surface of the developer holding member; a sealing member that is disposed along an edge of the opening upstream in the moving direction, is capable of coming in contact with and being separated from the developer holding member, and that seals up a gap between the developer holding member and the housing at the time of coming in contact with the outer peripheral surface of the developer holding member; a suction passage that is formed in a longitudinal direction of the housing; a developer transport unit comprising a rotating blade attached around a rotation shaft thereof in a spiral shape that transports the developer collected into the housing to one end in the longitudinal direction of the housing; and a filtration member that is disposed between the developer transport unit and the suction passage, extends in the longitudinal direction of the housing, and that is tilted so that at least an upper part thereof overlaps with an upside of the developer transport unit, wherein the collection member is disposed above the rotation shaft of the developer transport unit and the suction passage is disposed next to the rotation shaft of the developer transport unit, and wherein the developer transport unit has a configuration in which a sliding portion coming in slidable contact with the rotating blade is disposed on the upper part of the filtration member.