Patent ID: 6496668
Filing Date: 2002-12-17
Classification: G03G

Abstract:
A developing device for developing a latent static-electric image into a visible image from developer, the developing device comprising:a developing case for holding developer, the developing case being formed with an opening that extends in a lengthwise direction; a developing roller disposed in the opening of the developing case and rotatably supported at lengthwise ends thereof on the developing case; end leak prevention members disposed one at each lengthwise end of the developing roller in sliding contact with a peripheral surface of the developing roller; lower side seals each disposed between the developing case and the developing roller and in between the end leak prevention members at a position adjacent to a corresponding end leak prevention member, each of the lower side seals having an upstream edge facing upstream with respect to rotation of the developing roller; and a lower film disposed between the developing case and the developing roller, the lower film completely covering the upstream edge of each of the lower side seals from contact with the developing roller, each of the lower side seals being partially exposed between the lower film and a corresponding end leak prevention member.