Patent ID: 9174821
Filing Date: 2015-11-03
Classification: B65H

Abstract:
1. A sheet folding device that performs a folding process on a sheet comprising: a sheet holding member on which a sheet is placed; a detector configured to detect a thickness of the sheet placed on the sheet holding member; a first folding unit configured to form a first fold in the sheet placed on the sheet holding member; a retreat path configured to be entered by the sheet having the first fold formed by the first folding unit, the retreat path having a stop portion to be contacted by the first fold; a sheet retaining mechanism configured to move a movable member with respect to the sheet that enters the retreat path, the sheet retaining mechanism being configured to regulate movement of the sheet in the retreat path in a direction of thickness of the sheet; and a second folding unit configured to form a second fold in the sheet having the first fold while allowing the sheet that has contacted the stop portion to exit the retreat path, wherein the sheet retaining mechanism regulates the space in the retreat path in accordance with the thickness of the sheet that enters the retreat path.