Patent ID: 9329530
Filing Date: 2016-05-03
CPC Classification: G03G

Claim Text:
1. A developing device comprising: a developing-device housing that has an opening facing an image carrier on which an electrostatic latent image is to be formed, the developing-device housing containing developer including toner and a carrier; a developer carrier that faces the image carrier and is rotatable while carrying the developer, the developer carrier being configured to develop the electrostatic latent image on the image carrier with the developer; a developer-thickness-regulating member that is a substantially long magnetic member having a substantially circular sectional shape and extending parallel to an axial direction of the developer carrier, the developer-thickness-regulating member facing the developer carrier at a position on an upstream side in a direction of rotation of the developer carrier with respect to a position where the developer carrier faces the image carrier, the developer-thickness-regulating member being configured to regulate a thickness of a layer of the developer on the developer carrier at a regulating gap provided between the developer carrier and the developer-thickness-regulating member; and sealing members that seal a gap between the developer-thickness-regulating member and the developing-device housing, wherein the sealing members include