Sheet placement unit, post-processing apparatus and image forming system

A sheet placement unit on which a plurality of sheet bundles are loaded so that the plurality of sheet bundles are overlapped, each sheet bundle of the plurality of sheet bundles having been produced by providing a folding process to a plurality of sheets and the sheet placement unit comprising:

• a sheet placement section on which the sheet bundle having been provided with the folding process is loaded, the sheet placement section being inclined so that a downstream side of the sheet placement section in a sheet conveying direction is higher than another side;
• a sheet conveyance device to convey the sheet bundle loaded on the sheet placement section in the sheet conveying direction while the plurality of sheet bundles are overlapped;
• and
• a sheet holding device provided swingably above the sheet placement section, the sheet holding device comprising a sheet contacting section which comes in contact with an upper surface of the sheet bundle loaded on the sheet placement section.