Sheet separation device, sheet laminator, and image forming system

A sheet separation device comprising:

• a sheet separator configured to:
• perform a sheet separating operation of separating a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet, and
• perform a sheet inserting operation of inserting an inner sheet between the two sheets of the two-ply sheet separated in the sheet separating operation;
• a displacement detector configured to,
• detect a displacement amount of the two-ply sheet in a width direction of the two-ply sheet orthogonal to a sheet conveyance direction in which the two-ply sheet is conveyed toward the sheet separator, and
• detect a displacement amount of the inner sheet, which is conveyed toward the sheet separator, in the width direction;
• a displacement adjuster configured to adjust a displacement of the two-ply sheet in the width direction before the sheet separating operation based on the detected displacement amount of the two-ply sheet;
• and
• processing circuitry configured to cause the displacement adjuster to adjust relative positions of the two-ply sheet and the inner sheet in the width direction between the sheet separating operation and the sheet inserting operation based on the detected displacement amount of the inner sheet.