Patent ID: 8953987
Filing Date: 2015-02-10
Classification: G03G

Abstract:
1. A development device comprising: a development casing for containing developer; a developer bearer disposed facing a latent image bearer to carry by rotation developer to a development range facing the latent image bearer; a developer conveyance member to supply developer to the developer bearer while transporting the developer axially; a channel including therein the developer conveyance member, the channel including: a conveyance area in which the developer conveyance member exerts conveyance force on developer, and a buffer area adjacent to the conveyance area in a direction perpendicular to an axial direction of the developer conveyance member, the buffer area positioned midway in a developer conveyance direction inside the channel and the buffer area being wider than a portion of the channel upstream from the buffer area, an upstream end face being at an upstream end of the buffer area and inclined relative to the axial direction of the developer conveyance member and inclined to a lateral side which is perpendicular to the axial direction to widen the buffer area in the developer conveyance direction.