Granted Patent B2

US 8,126,375 · App. 13/164,303 · Granted Feb 28, 2012

Assignee: Ricoh Co., Ltd.

Abstract

Claims (32)

1. An image forming apparatus, comprising:

a toner container including a toner outlet to discharge toner therefrom, and a shutter for opening and closing the toner outlet;

a toner container holder which detachably holds the toner container, the toner container holder including a catch, disposed below the toner container, movable in a downward direction, so as to move from a position for engagement with the shutter, the catch contacting the shutter when detaching the toner container from the toner container holder at the position for engagement in order to close the shutter, a support portion of the catch being downstream, relative to an insertion direction, of the portion of the catch which contacts and moves to the shutter to a closed position.

2. An image forming apparatus according to claim 1 , wherein:

during an operation of attachment of the toner container to the toner container holder, the catch is pushed downward by the toner container in order to allow toner container to move in the insertion direction over a top of the catch.

3. An image forming apparatus according to claim 1 , wherein:

during a detachment of the toner container from the holder, the catch prevents the shutter from moving until the shutter closes the toner outlet, and then the catch moves downward so as not to obstruct the detachment of the toner container from the holder.

4. An image forming apparatus according to claim 1 , wherein the toner container holder comprises two catches which are linked to each other.

5. An image forming apparatus according to claim 1 , wherein the toner container comprises a cut-out portion to receive the catch when the toner container is moving in the insertion direction.

6. An image forming apparatus according to claim 1 , wherein the catch is pivotally mounted to the toner container holder.

7. An image forming apparatus according to claim 1 , wherein the toner container holder comprises a nozzle which contacts the shutter and pushes the shutter to an open position during an operation of attachment of the toner container.

8. An image forming apparatus, comprising:

a toner container including a toner outlet to discharge toner therefrom, and a shutter for opening and closing the toner outlet;

a toner container holder which detachably holds the toner container, the toner container holder including a claw, disposed below the toner container, movable in a downward direction, so as to move from a position for engagement with the shutter, the claw contacting the shutter when detaching the toner container from the toner container holder at the position for engagement in order to close the shutter, a support portion of the claw being downstream, relative to an insertion direction, of the portion of the claw which contacts and moves to the shutter to a closed position.

9. An image forming apparatus according to claim 8 , wherein:

during an operation of attachment of the toner container to the toner container holder, the claw is pushed downward by the toner container in order to allow toner container to move in the insertion direction over a top of the claw.

10. An image forming apparatus according to claim 8 , wherein:

during a detachment of the toner container from the holder, the claw prevents the shutter from moving until the shutter closes the toner outlet, and then the claw moves downward so as not to obstruct the detachment of the toner container from the holder.

11. An image forming apparatus according to claim 8 , wherein the toner container holder comprises two claws which are linked to each other.

12. An image forming apparatus according to claim 8 , wherein the toner container comprises a cut-out portion to receive the claw when the toner container is moving in the insertion direction.

13. An image forming apparatus according to claim 8 , wherein the claw is pivotally mounted to the toner container holder.

14. An image forming apparatus according to claim 8 , wherein the toner container holder comprises a nozzle which contacts the shutter and pushes the shutter to an open position during an operation of attachment of the toner container.

15. An image forming apparatus, comprising:

a toner container including a toner outlet to discharge toner therefrom, and a shutter for opening and closing the toner outlet;

a toner container holder which detachably holds the toner container, the toner container holder including a means for biasing, disposed below the toner container, movable in a downward direction, so as to move from a position for engagement with the shutter, the means for biasing contacting the shutter when detaching the toner container from the toner container holder at the position for engagement in order to close the shutter, a support portion of the means for biasing being downstream, relative to an insertion direction, of the portion of the means for biasing which contacts and moves to the shutter to a closed position.

16. An image forming apparatus according to claim 15 , wherein:

during an operation of attachment of the toner container to the toner container holder, the means for biasing is pushed downward by the toner container in order to allow toner container to move in the insertion direction over a top of the means for biasing.

17. An image forming apparatus according to claim 15 , wherein:

during a detachment of the toner container from the holder, the means for biasing prevents the shutter from moving until the shutter closes the toner outlet, and then the means for biasing moves downward so as not to obstruct the detachment of the toner container from the holder.

18. An image forming apparatus according to claim 15 , wherein the toner container holder comprises two means for biasing which are linked to each other.

19. An image forming apparatus according to claim 15 , wherein the toner container comprises a cut-out portion to receive the means for biasing when the toner container is moving in the insertion direction.

20. An image forming apparatus according to claim 15 , wherein the means for biasing is pivotally mounted to the toner container holder.

Priority Claims (16)

Continuity (5)