Toner supply device and image forming apparatus

1. An image forming apparatus comprising:

a toner supply device configured to be detachably attached into an apparatus main body of said image forming apparatus and to supply a toner to a developing device,

wherein said toner supply device comprises:

a container main body configured to be substantially in a rectangular solid shape and to be inserted into said apparatus main body along a longitudinal direction of the container main body, the container main body having a toner containing part communicating with said developing device and a barrel part which moves downward while receiving a biasing force from said apparatus main body when the barrel part is inserted into said apparatus main body; and

a handle member arranged at a rear of said barrel part when seen from an insertion direction in which said container main body is inserted, the handle member having a lock part which is configured to be inserted into said apparatus main body according to a downward movement of said barrel part and to fix said toner supply device in said apparatus main body,

wherein

said barrel part has a hollow part formed inside and said container main body further has a lid covering an upper face of said barrel part;

said lid has a guide arm extending along the longitudinal direction of said container main body; and

said apparatus main body has a support rail formed so as to guide an upper face and a lower face of said guide arm, the support rail being configured to have a width substantially equal to a height from said upper face to said lower face on a back side of said apparatus main body when seen in said insertion direction and to have a width larger than the height from said upper face to said lower face on a front side of said apparatus main body.

2. The image forming apparatus according to claim 1 , wherein said apparatus main body has a biasing member that biases said lid including said upper face of said guide arm downward on an upper side of said support rail.

3. The image forming apparatus according to claim 2 , further comprising an engagement recess part into which said lock part is inserted and which fixes said toner supply device into said apparatus main body.

4. The image forming apparatus according to claim 1 , wherein said apparatus main body has a replacement promotion mechanism that, as a result of an upward movement of said handle member, pushes out said toner supply device oppositely with respect to said insertion direction.

5. The image forming apparatus according to claim 4 , wherein said replacement promotion mechanism has a pressing member, a horizontal biasing member, and an operation assistance part.

6. The image forming apparatus according to claim 5 , wherein said pressing member can be brought into contact with said toner supply device.

7. The image forming apparatus according to claim 2 , wherein said apparatus main body has a replacement promotion mechanism that, as a result of an upward movement of said handle member, pushes out said toner supply device oppositely with respect to said insertion direction.

8. The image forming apparatus according to claim 7 , wherein said replacement promotion mechanism has a pressing member, a horizontal biasing member, and an operation assistance part.

9. The image forming apparatus according to claim 8 , wherein said pressing member can be brought into contact with said toner supply device.