Patent ID: 8368910

Claim:
A printing apparatus which prints on a sheet and outputs the sheet to a sheet stacking unit among a plurality of sheet stacking units, comprising: an executing unit configured to execute a secure print job requiring a password before an execution of the secure print job and a non-secure print job not requiring a password before an execution of the non-secure print job; a determining unit configured to determine whether there is a sheet stacking unit on which a sheet is not stacked among the plurality of sheet stacking units; a control unit configured to, in a case where the execution of the secure print job is instructed when the non-secure print job is being executed, interrupt the execution of the non-secure print job and execute the secure print job while the non-secure print job is interrupted if the determining unit determines there is the sheet stacking unit on which a sheet is not stacked; and an output control unit configured to change an output destination of a sheet corresponding to the secure print job for preventing the sheet corresponding to the secure print job from being output to a sheet stacking unit to which a sheet corresponding to the non-secure print job is output, wherein the control unit, in a case where the execution of the secure print job is instructed when the non-secure print job is being executed, executes the secure print job after completion of the execution of the non-secure print job without interrupting the execution of the non-secure print job if the determining unit determines that there is not the sheet stacking unit on which a sheet is not stacked.