Patent ID: 8526874

Claim:
An image forming apparatus which forms an image on a medium, comprising: an image forming section which carries out formation of the image on the medium which is transported; a reverse section which reverses the medium passed through the image forming section; and a re-transporting section which transports the medium, reversed by the reverse section, again to the image forming section, the re-transporting section comprising: a re-transporting path extending from the reverse section to the image forming section, a drive mechanism which generates a driving force for transporting the medium, a first transporting roller which is connected to the drive mechanism to transport the medium, a second transporting roller which transports the medium in cooperation with the first transporting roller, a first transmitting section having a first gear which is coaxially coupled with the first transporting roller so that the first gear is rotatable integrally with the first transporting roller, and transmitting the driving force of the drive mechanism to the first transporting roller, and a second transmitting section having: a second gear which is engaged with the first gear; a shaft which is extended in a direction intersecting a rotational axis of the first transporting roller and a rotational axis of the second transporting roller, and which is coaxially coupled with the second gear so that the shaft is rotatable integrally with the second gear; a third gear which is coaxially coupled with the shaft so that the third gear is rotatable integrally with the shaft; and a fourth gear which is engaged with the third gear and which is coaxially coupled with the second transporting roller so that the fourth gear is rotatable integrally with the second transporting roller, the second transmitting section transmitting the driving force transmitted to the first transmitting section to the second transporting roller; wherein the shaft includes at least two divided portions, the first transmitting section is arranged at an connecting portion of the divided portions of the shaft, the second transmitting section is arranged to sandwich the first transmitting section, and the first gear of the first transmitting section and the fourth gear of the second transmitting section are arranged to face with each other so that the first and fourth gears sandwich the rotational axis of the shaft.