A SHEET SORTER

摘要

A sheet sorting apparatus operable in a sorting mode in which sheets are sorted and in a non-sorting mode in which the sheets are not sorted includes a plurality of bins for receiving and sorting the sheets; a stapler for stapling the sheets accommodated in the bins; wherein one of the plural bins functions to receive the sheets in the non-sorting mode; an expander for changing a sheet accommodating space of the bin for receiving the sheets in the non-sorting mode; and a controller for operating the expander to expand the accommodating space when a number of sheets received by the bin is larger than a staplable number of the sheets of the stapler.