Patent ID: 7753370

Claim:
A sheet conveyance apparatus comprising: a skew correction unit configured to rotate a sheet while conveying the sheet to correct skew of the sheet, and the skew correction unit includes two sheet conveyance rolling pairs independently arranged in the direction orthogonal to the sheet conveyance direction, the skew of the sheet is corrected according to a difference in a sheet conveyance speed between the sheet conveyance rolling pairs; a lateral registration correction unit which is arranged downstream from the skew correction unit, the lateral registration correction unit configured to move the conveyed sheet in the direction orthogonal to the sheet conveyance direction to correct a sheet position; and a sheet conveyance assist unit which is arranged upstream from the skew correction unit, the sheet conveyance assist unit configured to move the conveyed sheet in the direction orthogonal to the sheet conveyance direction, wherein after skew correction of the sheet is performed by the skew correction unit, the sheet conveyance rolling pairs are released from nip, the lateral registration correction unit moves the sheet in the direction orthogonal to the sheet conveyance direction, and the sheet conveyance assist unit moves the sheet in the direction orthogonal to the sheet conveyance direction in synchronization with movement operation of the sheet by the lateral registration correction unit.