Sheet-conveying device that conveys sheets, image-forming apparatus using the sheet-conveying device and image-forming system that uses the sheet-conveying device

An image-forming apparatus comprising a sheet-conveying device including:

• a curved sheet-conveying path that is formed by a curved conveying guide, the curved sheet-conveying path being arranged at an outside of a sheet-conveying route on which a sheet is conveyed and the curved conveying guide being arranged at only an outside of the sheet-conveying route in the curved sheet-conveying path;
• and
• a sheet-conveying-direction adjusting member that adjusts a sheet-conveying direction to direct a forward end of the sheet to the curved conveying guide, the sheet-conveying-direction adjusting member being arranged at an upper stream side of the curved conveying guide along the sheet-conveying direction;
• wherein the sheet-conveying-direction adjusting member includes a pair of rollers that nip the sheet;
• one roller of the pair of rollers, said one roller being arranged at an inside of the curved sheet-conveying route, contains a diameter more than that of the other roller thereof, said other roller being arranged at an outside of the curved sheet-conveying route;
• and
• said one roller arranged at the inside of the curved sheet-conveying route contains hardness less than that of the other roller arranged at the outside of the curved sheet-conveying route.

An image-forming system comprising:

• an image-forming apparatus that forms an image on a sheet;
• a sheet-conveying device including:
• a curved sheet-conveying path that is formed by a curved conveying guide, the curved sheet-conveying path being arranged at an outside of a sheet-conveying route on which a sheet is conveyed and the curved conveying guide being arranged at only an outside of the sheet-conveying route in the curved sheet-conveying path;
• and
• a sheet-conveying-direction adjusting member that adjusts a sheet-conveying direction to direct a forward end of the sheet to the curved conveying guide, the sheet-conveying-direction adjusting member being arranged at an upper stream side of the curved conveying guide along the sheet-conveying direction;
• and
• a sheet-processing apparatus that performs a sheet-processing on the sheet that is delivered or received to or from the image-forming apparatus through the sheet-conveying device;
• wherein the sheet-conveying-direction adjusting member includes a pair of rollers that nip the sheet;
• one roller of the pair of rollers, said one roller being arranged at an inside of the curved sheet-conveying route, contains a diameter more than that of the other roller thereof, said other roller being arranged at an outside of the curved sheet-conveying route;
• and
• said one roller arranged at the inside of the curved sheet-conveying route contains hardness less than that of the other roller arranged at the outside of the curved sheet-conveying route.