Sheet conveyance apparatus

A sheet conveyance apparatus, comprising:

• an abutment surface extending along a sheet conveyance direction and configured to abut against an edge, in a width direction orthogonal to the sheet conveyance direction, of a sheet passing through a sheet conveyance path;
• an oblique-feed unit configured to nip and convey the sheet by imparting to the sheet a force in a direction inclined relative to the sheet conveyance direction so that the sheet approaches the abutment surface in the width direction as the sheet proceeds downstream in the sheet conveyance direction;
• a conveyance unit disposed upstream of the oblique-feed unit with respect to the sheet conveyance direction and configured to convey the sheet downstream in the sheet conveyance direction;
• a detector configured to detect the sheet at a detection position downstream of the conveyance unit with respect to the sheet conveyance direction;
• a drive unit configured to drive the oblique-feed unit;
• a change unit configured to change a force with which the oblique-feed unit nips the sheet;
• and
• a control unit configured to control the drive unit and the change unit so that, after causing the sheet to abut against the abutment surface in a first state in which the oblique-feed unit is driven at a first speed, based on a detection signal from the detector, the oblique-feed unit is put into a second state in which the oblique-feed unit is driven at a second speed higher than the first speed and the force with which the oblique-feed unit nips the sheet is weaker than that in the first state.