Patent ID: 9195173
Filing Date: 2015-11-24
Classification: G03G

Abstract:
1. A developing device comprising: a developer bearer to carry by rotation developer to a development range facing a latent image bearer; a developer container to contain developer and having a pressure-release vent to discharge air from the developer container to outside the developing device; a filter provided to the pressure-release vent to inhibit developer from being discharged through the pressure-release vent, the filter including a porous fluoroplastic film; and a reinforcing member to reinforce the filter to maintain a shape of the filter to cover the pressure-release vent, wherein the filter is provided to the developer container via the reinforcing member, wherein a compressed member is provided between the reinforcing member and the developer container to seal clearance therebetween, wherein the compressed member is a sponge, and wherein the reinforcing member is thin and planar.