Bias member for the doctor blade of the developer unit in an imaging Device

摘要

A doctor blade assembly for the developer unit of an electrophotographic imaging system. The doctor blade assembly includes a blade member having a first longitudinal edge for contacting a developer roll of an imaging system; a bracket member operatively connected to the blade member; and at least one bias member having a first end portion along a first longitudinal end portion of the bracket member and a second end portion contacting a distal portion of the blade member so as to present a force thereon. The force presented by the bias member serves as a counterforce to at least partly offset a force presented on the doctor blade and developer roll by a seal member of the developer unit.

主权项

1. A removable unit for an electrophotographic imaging device, comprising:
a housing; a rotatable roll disposed within the housing; at least one seal member coupled within the housing along at least one side thereof, a portion of the at least one seal member engaging an end portion of the rotatable roll so as to prevent toner from leaking from the housing; and a blade assembly coupled to the housing, comprising a support bracket secured to the housing, a blade member coupled to the support bracket and being positioned so that a distal end thereof is disposed between and engages with the rotatable roll and the at least one seal member, and at least one bias member having a first end portion disposed in a substantially stable position within the housing and a second end portion which engages with the blade member so as to present a force that at least partly offsets a force presented to the blade member by the at least one seal member.