Patent ID: 8672317

Claim:
A sheet processing apparatus for controlling stacking of sheets on a sheet stacking unit, the apparatus comprising: a first receiving unit configured to receive, from a user, the number of sheets to be stacked on the sheet stacking unit; a second receiving unit configured to receive, from a user, an instruction to select either a first mode or a second mode, wherein the first mode stops stacking of sheets on the sheet stacking unit in a case where the number of sheets stacked on the sheet stacking unit corresponds to the number of sheets received by the first receiving unit, and wherein the second mode stops stacking of sheets on the sheet stacking unit in a case where the sheet stacking unit becomes full; and a stacking control unit configured to control stopping stacking of sheets on the sheet stacking unit: in a case where the second receiving unit receives an instruction to select the first mode and the number of sheets stacked on the sheet stacking unit corresponds to the number of sheets received by the first receiving unit, and in a case where the second receiving unit receives an instruction to select the second mode and the sheet stacking unit becomes full.