Sheet separation device, laminator, image forming apparatus, and image forming system

A sheet separation device configured to separate a two-ply sheet in which two sheets are bonded together at a portion of the two-ply sheet, the sheet separation device comprising:

• a rotator;
• a nipping member disposed opposite the rotator and configured to nip the two-ply sheet with the rotator;
• a conveyor configured to convey the two-ply sheet between the rotator and the nipping member with a bonded portion of the two-ply sheet being an upstream end or a downstream end of the two-ply sheet in a conveyance direction of the two-ply sheet;
• and
• a winding member disposed adjacent to the rotator and configured to wind the two-ply sheet around the rotator, to create a difference in winding circumferential length between the two sheets and separate the two sheets.