A curl correcting apparatus includes rollers, a motor, and a clutch portion. The rollers are curl correction-use rollers which are arranged in parallel to each other in a pressure-contact state and which are different in hardness. The motor is a motor capable of rotating in forward and reverse directions relative to a correction-amount adjusting portion that changes and adjusts a distance to the rollers as a result of an eccentric cam that integrally rotates in accordance with a rotation amount of a rotation shaft, pressing against the rollers. The clutch portion transmits a rotary driving force of the motor to the rollers during the forward rotation and to a rotation shaft during the reverse rotation.

An image forming apparatus includes an image forming portion, a discharge conveying path to convey a sheet on which an image is formed by the image forming portion toward a discharging portion, and a reconveying path branched from the discharge conveying path and to reconvey the sheet of which the image is formed on a first surface to the image forming portion. A curl correcting portion is disposed in the reconveying path, includes first and rotatable members to form a nip, and corrects a curl of the sheet by conveying the sheet while the first rotatable member deforms the second rotatable member in the nip. An oblique movement correcting portion is disposed in the reconveying path and upstream of the curl correcting portion with respect to a sheet conveying direction and performs an oblique movement correction of the sheet.