Sheet post-processing device and sheet post-processing method
AssigneeToshiba Tec Kabushiki Kaisha
InventorKen Iguchi
Life of this patent
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Abstract
According to one embodiment, a sheet post-processing device includes a first tray to receive sheets from an image forming unit, a second tray to receive sheets from the first tray, and a third tray to receive sheets from the second tray. The third tray is movable relative to the second tray. A bundle claw is configured to move sheets in a first direction from the second tray to the third tray. A controller is configured to move the third tray relative to the second tray according to the sheets on the second tray. Depending on various characteristics of the sheets on the second tray or the presence of sheets already on the third tray, the position of the third tray may be changed to reduce possible misalignments of sheets in the transfer from the second to third tray.
Claims16
A sheet post-processing device, comprising:
- a first tray to receive sheets from an 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;
- 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, and
- the controller determines 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.
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.
Dependencies are inferred from the claim text.