An image forming apparatus, comprising: a transfer section , including a transfer rotating body for conveying a sheet at a first linear velocity, configured to transfer a toner image onto the sheet; a fixing section including a first rotating body , a second rotating body facing the first rotating body to form a nip (N) sandwiching the sheet with the first rotating body , and a heating section for heating the sheet onto which the toner image is transferred; and a controller configured to execute a sheet acceleration and deceleration control for setting a rotating speed of the first rotating body to a second linear velocity from the first linear velocity and decelerating the rotating speed of the first rotating body from the second linear velocity to the first linear velocity, the second linear velocity being higher than the first linear velocity, characterized in that the controller is configured to: execute the sheet acceleration control before a tip in the conveying direction of the sheet reaches the nip; execute the sheet deceleration control at a time the tip in the conveying direction of the sheet reaches a position with a predetermined distance from an exit of the nip in the conveying direction; and maintain the rotating speed of the first rotating body at the second linear velocity until the tip in the conveying direction of the sheet reaches the position with the predetermined distance from the exit of the nip in the conveying direction after the tip in the conveying direction of the sheet reaches the nip. a transfer section , including a transfer rotating body for conveying a sheet at a first linear velocity, configured to transfer a toner image onto the sheet; a fixing section including a first rotating body , a second rotating body facing the first rotating body to form a nip (N) sandwiching the sheet with the first rotating body , and a heating section for heating the sheet onto which the toner image is transferred; and a controller configured to execute a sheet acceleration and deceleration control for setting a rotating speed of the first rotating body to a second linear velocity from the first linear velocity and decelerating the rotating speed of the first rotating body from the second linear velocity to the first linear velocity, the second linear velocity being higher than the first linear velocity, characterized in that the controller is configured to: execute the sheet acceleration control before a tip in the conveying direction of the sheet reaches the nip; execute the sheet deceleration control at a time the tip in the conveying direction of the sheet reaches a position with a predetermined distance from an exit of the nip in the conveying direction; and maintain the rotating speed of the first rotating body at the second linear velocity until the tip in the conveying direction of the sheet reaches the position with the predetermined distance from the exit of the nip in the conveying direction after the tip in the conveying direction of the sheet reaches the nip. execute the sheet acceleration control before a tip in the conveying direction of the sheet reaches the nip; execute the sheet deceleration control at a time the tip in the conveying direction of the sheet reaches a position with a predetermined distance from an exit of the nip in the conveying direction; and maintain the rotating speed of the first rotating body at the second linear velocity until the tip in the conveying direction of the sheet reaches the position with the predetermined distance from the exit of the nip in the conveying direction after the tip in the conveying direction of the sheet reaches the nip. <EOS>