Sheet-conveying device and image-forming apparatus

An image-forming apparatus for forming an image on a sheet, the image-forming apparatus comprising:

• an image-forming unit configured to form the image on the sheet;
• a discharge unit configured to discharge the sheet to an outside of the image-forming apparatus, wherein the discharge unit includes a discharge roller, a discharge driving shaft configured to rotate by transmission of a discharge driving force and to support the discharge roller, a first driven roller configured to be driven to rotate with the discharge roller and a first supporting shaft that supports the first driven roller;
• and
• a conveyance unit configured to convey the sheet in an opposite direction to convey the sheet again to the image-forming unit, wherein the conveyance unit includes a conveyance roller, a conveyance driving shaft configured to rotate by transmission of a conveyance driving force and to support the conveyance roller, a second driven roller configured to be driven to rotate with the conveyance roller and a second supporting shaft that supports the second driven roller,
• wherein the discharge driving shaft and the conveyance driving shaft are disposed at different positions respectively when viewed in an axial direction of the discharge driving shaft,
• wherein the first supporting shaft and the second supporting shaft are disposed at respectively different positions when viewed in an axial direction of the first supporting shaft,
• wherein the discharge roller and the conveyance roller are arranged at different positons in a width direction of the sheet that is perpendicular to a conveyance direction of the sheet,
• wherein the discharge roller and the second driven roller partially overlap when viewed in the axial direction of the discharge driving shaft,
• wherein, in a height direction, the first supporting shaft is at the lowest position and the conveyance driving shaft is at the highest position, and
• wherein the discharge driving shaft and the second supporting shaft are located between the first supporting shaft and the conveyance driving shaft in the height direction.