PURPOSE: To aid sheet transfer after release of a gripper by revolving a rotary body which follows the gripper, in interlock with the release of the gripper, in the sheet discharge apparatus for a various sorts of machines equipped with a sheet transfer and discharge mechanism.

CONSTITUTION: Under a gripper 2, a paper discharge roll rotary body 10 is held so as to be rotatable by a roll support 11, and said roll support 11 is held rotatably for the gripper 2. The gripper 2 holding a sheet 1 and he sheet 1 approach to a cam-shaped paper discharge board 3, and the sheet 1 advances in a speed V. After that, the bottom part 21 of the gripper 2 collides with the paper discharge board 3, and the gripper 2 opens, and the sheet 1 stops, having one edge attached onto the edge of a discharged sheet tray 9. When the gripper 2 is transferred with a belt 6 further, the discharge paper roll rotary body 10 runs over the discharge sheet board 3, and revolved through frictional revolution, and contacts with the bottom of the sheet 1, and sheet transfer is aided.