SHEET POST-PROCESSING APPARATUS AND SHEET POST-PROCESSING METHOD

摘要

In a sheet post-processing apparatus, a sheet guide is arranged above a processing tray that aligns stacked one or plural sheets. The sheet guide is moved by racks to be spaced apart from or brought close to the processing tray. The racks are controlled to be driven on the basis of the number of sheets stacked on the processing tray or the thickness of a stack of the sheets to adjust a space between the processing tray and the sheet guide.