Patent ID: 7422209

Claim:
A sheet conveying apparatus for conveying a sheet by a plurality of sheet conveying devices arranged along a sheet conveying path, said plurality of sheet conveying devices is controlled by control means, comprising: detection means configured to detect an inclination to a sheet conveying direction of a sheet to be conveyed; an inclination correction device configured to correct the inclination of the sheet by rotating the sheet based on a detection signal from said detection means; a first conveying device, which is provided upstream of said inclination correction device, forms a first conveying nip, and conveys the sheet toward the inclination correction device; a first nipping release device configured to release a nipping state of the first conveying nip of said first sheet conveying device; a second sheet conveying device, which is provided downstream of said inclination correction device, forms a second conveying nip and conveys the sheet from the inclination correction device to the downstream; and a second nipping release device configured to release a nipping state of the second conveying nip of said second sheet conveying device; wherein said first nipping release device and said second nipping release device are controlled to selectively release the sheet nipping state of the first conveying nip of said first sheet conveying device and the second conveying nip of said second sheet conveying device so that said first sheet conveying device and said second sheet conveying device do not nip a corrected sheet during a correction operation of the inclination of the sheet by said inclination correction device in a state in which the sheet is positioned simultaneously within the first conveying nip of said first sheet conveying device and the second conveying nip of said second sheet conveying device.