SHEET LAMINATOR AND IMAGE FORMING SYSTEM INCORPORATING THE SHEET LAMINATOR

A sheet laminator includes a sheet ejection roller pair, a sheet ejection tray, a presser, and circuitry. The sheet ejection tray has a receiving face to receive the two-ply sheet standing in the sheet ejection tray, and a stacking face facing the receiving face and inclined with respect to the vertical direction. The presser has a leading end to move the two-ply sheet on the receiving face toward the stacking face, and press the two-ply sheet onto the stacking face. The circuitry is to perform a first operation to move the leading end of the presser from the receiving face to an intermediate position beyond the extension line and before the stacking face, perform a second operation to move the leading end of the presser from the intermediate position to the stacking face, and press the two-ply sheet against the stacking face with the leading end of the presser.