Patent ID: 7991335

Claim:
A developer supply apparatus configured to store a developer in a developer containing space and supply the developer to the latent image forming surface, comprising: a developer carrying body which is a columnar member, wherein the developer carrying body is configured to rotate in a predetermined direction and be contained in a carrying body containing space which is located between the developer containing space and outside of the developer supply apparatus in such a manner as to be connected to them; an intra-developer-containing-space transport body including a top-face-side portion fixed to a top face of the developer containing space in such a manner that a developer transport surface for transporting the developer faces downward and a bottom-face-side portion fixed to a bottom face of the developer containing space in such a manner that the developer transport surface faces upward, wherein a downstream end portion in a developer transport direction of the top-face-side portion is located in such a manner as to face the developer carrying body, and wherein the intra-developer-containing-space transport body is configured to transport the developer stored in the developer containing space to the developer carrying body by means of electric fields in the developer transport direction in order to allow the developer carried on the developer carrying body at the downstream end portion; and an auxiliary transport body located in such a manner as to face the top-face-side portion of the intra-developer-containing-space transport body.