Sheet stacking apparatus, control method of sheet stacking apparatus, and storage medium

A printing apparatus comprising:

• a printing unit configured to print an image on a sheet;
• a lowering control unit configured to lower a sheet stacking portion for stacking a sheet on which an image is printed by the printing unit;
• a determination unit configured to determine that the sheet stacking portion cannot be lowered by the lowering control unit;
• an acquisition unit configured to acquire a position of the sheet stacking portion at which the determination unit determines that the sheet stacking portion cannot be lowered;
• an identification unit configured to identify an amount of sheets stackable on the sheet stacking portion without removing an obstacle placed under the sheet stacking portion based on the position acquired by the acquisition unit;
• and
• a notification unit configured to notify the amount of sheets identified by the identification unit and an amount of sheets stackable on the sheet stacking portion after removal of the obstacle placed under the sheet stacking portion.

A control method for a sheet stacking apparatus having a lowering control unit configured to lower a sheet stacking portion, the control method comprising:

• determining that the sheet stacking portion cannot be lowered by the lowering control unit;
• acquiring a position of the sheet stacking portion at which determining determines that the sheet stacking portion cannot be lowered;
• identifying an amount of sheets stackable on the sheet stacking portion without removing an obstacle placed under the sheet stacking portion based on the acquired position;
• and
• notifying the identified amount of sheets and an amount of sheets stackable on the sheet stacking portion after removal of the obstacle placed under the sheet stacking portion.

A computer-readable storage medium storing a program to cause a sheet stacking apparatus to perform a control method, the control method comprising:

• determining that the sheet stacking portion cannot be lowered by the lowering control unit;
• acquiring a position of the sheet stacking portion at which determining determines that the sheet stacking portion cannot be lowered;
• identifying an amount of sheets stackable on the sheet stacking portion without removing an obstacle placed under the sheet stacking portion based on the acquired position;
• and
• notifying the identified amount of sheets and an amount of sheets stackable on the sheet stacking portion after removal of the obstacle placed under the sheet stacking portion.

A sheet stacking apparatus comprising:

• a lowering control unit configured to lower a sheet stacking portion;
• a determination unit configured to determine that the sheet stacking portion cannot be lowered by the lowering control unit;
• an acquisition unit configured to acquire a position of the sheet stacking portion at which the determination unit determines that the sheet stacking portion cannot be lowered;
• and
• a notification unit configured to notify an amount of sheets stackable on the sheet stacking portion without removal of an obstacle placed under the sheet stacking portion based on the position acquired by the acquisition unit.