Patent ID: 8515317
Filing Date: 2013-08-20
Classification: G03G

Abstract:
1. A developer conveyance device, comprising: a developer container, in which a developer is contained; a partition wall that divides an inner space of the developer container into a first containing part and a second containing part, a first opening is formed at one end of the partition wall, and a second opening is formed at an opposite end of the partition wall; and a developer conveyance member provided in said developer container, which conveys the contained developer in a conveyance direction from one end side of the developer container to an other end of the developer container while agitating the contained developer; wherein in said developer conveyance member, a spiral wing toward an axial direction is formed around a rotation shaft; a plurality of paddle parts for conveying the developer in a direction that is perpendicular to a shaft core toward the second opening are formed around the rotation shaft in a delivery region over the second opening; and said paddle parts are arranged with their positions deviated in a circumferential direction and one paddle part positioned downstream in the conveyance direction has a larger area than a paddle part positioned upstream in the conveyance direction.