The sheet discharge device includes: a sheet discharge part; a sheet discharge tray having a tray upper surface and a rear wall portion; a fullness detection sensor for detecting that a height of a stack surface of folded sheets; and a first sheet presser member and a second sheet presser member for pressing a rear end side and a fore end side in a discharge direction, of the folded sheet. In a first pressing position in which the first sheet presser member extends from above the detection sensor to below the detection region, and is brought into contact with the folded sheet of a minimum size stacked on the tray upper surface. When a stack number of the folded sheets has exceeded a specified number, the first sheet presser member is retracted upward from the first pressing position by the rise of the stack surface.

A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.

A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.

An image forming system superposes a plurality of recording sheets on top of another by a predetermined number of sheets and discharges the recording sheets. The image forming system includes a recording sheet conveyor, a recording sheet superposition unit, and a controller. The recording sheet conveyor conveys the recording sheets. The recording sheet superposition unit superposes a preceding recording sheet and a succeeding recording sheet sent from the recording sheet conveyor. The controller controls the recording sheet superposition unit not to superpose the preceding recording sheet and the succeeding recording sheet when the controller refers to recording sheet information of the preceding recording sheet and determines that the preceding recording sheet is a recording sheet of a specified kind.

A sheet processing device includes: a folder that forms a plurality of folds on a sheet such that a fold part and a part with no fold of the sheet overlap with each other; a conveyance unit that conveys the sheen on which the folds are formed by the folder; and a pressing part that presses the fold part of the conveyed sheet in which the fold part and the part with no fold overlap with each other, from a side on which the fold part is located.

A method inserting a first portion of a workpiece material between an upper layer and a lower layer of a workpiece support material. The method also includes folding a second portion of the workpiece material over and on top of the upper layer of the workpiece support material. The second portion is coupled to the first portion. The method further includes inserting the workpiece material and the workpiece support material into an electronic cutting machine.

A conveyor system for moving stacked webs of material has a first unit with at least three belts. Each belt is driven by a motor having a drive shaft with a pulley. The drive shaft of one motor is spaced from the drive shaft of another motor to define a routing along which the belts travel in parallel paths and are independently movable. Each belt has at least two product supports. A second unit is opposite of the first unit and forms a process zone with the first unit. In the process zone, the product support of one of the belts of the first unit engages one side of the stacked web material, and the second unit engages an opposite side of the stacked web material. The product supports move in a synchronized manner from an inlet to an outlet of the process zone at an adjustable interval.

A method inserting a first portion of a workpiece material between an upper layer and a lower layer of a workpiece support material. The method also includes folding a second portion of the workpiece material over and on top of the upper layer of the workpiece support material. The second portion is coupled to the first portion. The method further includes inserting the workpiece material and the workpiece support material into an electronic cutting machine.