Patent ID: 11858771
Assignee: TOSHIBA TEC KABUSHIKI KAISHA
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. An image forming apparatus, comprising:
an imaging forming unit configured to form images on a sheet;
a sheet post-processing device including:
a first tray to receive sheets from the image forming unit;
a second tray to receive sheets from the first tray;
a third tray to receive sheets from the second tray, the third tray being movable relative to the second tray; and
a bundle claw configured to move sheets in a first direction from the second tray to the third tray; and

a controller configured to move the third tray relative to the second tray according to the sheets on the second tray, wherein
the controller is configured to determine the presence or absence of sheets on the third tray each time a sheet is discharged to the first tray from the image forming unit.