A sheet feeding apparatus for feeding sheets is provided with a delivery roller for delivering sheets on a stack tray, and an air blower mechanism for blowing air to the sheets on the stack tray, and selects to execute one of first operation for blowing air to the sheets to handle the sheets on the stack tray in a state in which the delivery roller is brought into contact with the sheets stacked on the stack tray, and second operation for blowing air to the sheets on the stack tray to handle the sheets in a state in which the delivery roller is retracted from the sheets stacked on the stack tray.

A sheet conveying device includes a sheet stacker, an air blower, and a guide. The sheet stacker stacks a plurality of sheets. The air blower blows air onto the plurality of sheets. The guide faces an uppermost sheet of the plurality of sheets on the sheet stacker and contacts the uppermost sheet at a plurality of positions of the guide spaced apart from each other in a sheet conveyance direction.

A sheet feeding apparatus for feeding sheets is provided with a delivery roller for delivering sheets on a stack tray, and an air blower mechanism for blowing air to the sheets on the stack tray, and selects to execute one of first operation for blowing air to the sheets to handle the sheets on the stack tray in a state in which the delivery roller is brought into contact with the sheets stacked on the stack tray, and second operation for blowing air to the sheets on the stack tray to handle the sheets in a state in which the delivery roller is retracted from the sheets stacked on the stack tray.

A manufacture of an electrode assembly in which first electrodes and second electrodes are alternately arranged between folded separators is described. The electrodes are stacked and stored in a magazine unit, and the plurality of electrodes are stored in a stacked manner. By disposing a stuck-electrodes prevention sheet between electrodes, the electrodes can be easily separated without sticking, and the stuck-electrodes prevention sheet removed after the electrodes are separated can be recycled.