Financial device and medium processing apparatus

1. A medium processing apparatus comprising:

a transfer roller unit comprising a first rotation shaft and one or more transfer rollers coupled to the first rotation shaft; and

a guide roller unit receiving power from the transfer roller unit and comprising a second rotation shaft, a one-way clutch connected to the second rotation shaft, and a guide roller connected to the one-way clutch;

wherein the one-way clutch comprises an inter body and an outer body moving relative to the inner body;

wherein the inner body is connected to the second rotation shaft, and

the outer body is connected to the glide roller;

wherein a side of the second rotation shaft is connected to a first clutch, and

the other side second rotation shaft is connected to a second clutch;

wherein the first clutch comprises an outer body connected to the transfer roller unit, and an inner connected to the second rotation shaft; and

wherein the second clutch comprises an outer body fixed to an immobilized frame, and an inner body connected to the second rotation shaft.

2. The medium processing apparatus of claim 1 , further comprising a return roller on the second rotation shaft to guide return of a medium,

wherein the return roller comprises one or more contacts that radially extend from the return roller.

3. The medium processing apparatus of claim 1 , wherein when the transfer roller rotates in a first direction to introduce a medium, the guide roller and the second rotation shaft are at a stop, and

when the transfer roller rotates in a second direction to return the medium, the guide roller and the second rotation shaft rotate in the first direction.

4. A medium processing apparatus comprising:

a transfer roller unit comprising a first rotation shaft and one or more transfer rollers coupled to the first rotation shaft; and

a guide roller unit receiving power from the transfer roller unit and comprising a second rotation shaft, a one-way clutch connected to the second rotation shall, and a guide roller connected to the one-way clutch;

wherein, when the transfer roller rotates in a first direction to introduce a medium, the guide roller and the second rotation shaft are at a stop, and

when the transfer roller rotates in a second direction to return the medium, the guide roller and the second rotation shaft rotate in the first direction.

5. The medium processing apparatus of claim 4 , wherein the second rotation shaft is rotated by the power transmitted from the transfer roller unit, and

the guide roller is rotated by frictional force generated by transferring the media.

6. The medium processing apparatus of claim 4 , wherein, when the second rotation shaft rotates, an absolute value of an angular velocity of the second rotation shaft is greater than an absolute value of an angular velocity of the guide roller.

7. The medium processing apparatus of claim 4 , wherein the one-way clutch comprises an inner body and an outer body moving relative to the inner body,

wherein the inner body is connected to the second rotation shaft, and

the outer body is connected to the guide roller.

8. The medium processing apparatus of claim 7 , wherein a side of the second rotation shaft is connected to a first clutch, and

the other side of the second rotation shaft is connected to a second clutch;

wherein the first clutch comprises an outer body connected to the transfer roller unit, and an inner body connected to the second rotation shall; and

wherein the second clutch comprises an outer body fixed to an immobilized frame, and an inner body connected to the second rotation shaft.

9. The medium processing apparatus of claim 4 , further comprising a return roller on the second rotation shall to guide return of a medium,

wherein the return roller comprises one or more contacts that radially extend from the return roller.

10. A financial device comprising:

a medium entrance through which a medium is input and output; and

a medium processing apparatus for processing the medium,

wherein the medium processing apparatus comprises:

a transfer roller unit comprising a first rotation shaft and one or more transfer rollers coupled to the first rotation shaft; and

a guide roller unit comprising a second rotation shaft receiving power from the transfer roller unit, and a guide roller connected to the second rotation shaft to move relative to the second rotation shaft,

wherein, when one or more of the transfer rollers rotate in a first direction, the second rotation shaft and the guide roller are at a stop, and

when one or more of the transfer rollers rotate in a second direction, the guide roller and the second rotation shaft rotate in the first direction and are different in rotation speed.

11. The financial device of claim 10 , further comprising a roller connecting clutch connecting the second rotation shaft to the guide roller,

wherein the roller connecting clutch comprises a one-way clutch.

12. The financial device of claim 11 , wherein the roller connecting clutch comprises an inner body and an outer body moving relative to the inner body,

wherein the inner body is connected to the second rotation shaft, and the outer body is connected to the guide roller.

13. The financial device of claim 11 , wherein a side of the second rotation shaft is connected to a first clutch, and

the other side of the second rotation shaft is connected to a second clutch,

wherein the first clutch comprises an outer body connected to the transfer roller unit, and an inner body connected to the second rotation shaft, and

the second clutch comprises an outer body fixed to an immobilized frame, and an inner body connected to the second rotation shaft.

14. The financial device of claim 13 , wherein the inner body and outer body of the first clutch rotate in the first direction when the transfer roller rotates in the second direction.

15. The financial device of claim 13 , wherein the first clutch and the second clutch comprise a one-way clutch.

16. The financial device of claim 10 , wherein, when the medium is introduced, the transfer roller rotates in the first direction, and

when the medium is returned, the transfer roller rotates in the second direction.

17. The financial device of claim 10 , further comprising a return roller on the second rotation shaft to guide return of the medium,

wherein the return roller comprises one or more contacts that radially extend from the return roller.