Patent ID: 9676577
Date: 2017-06-13
CPC Classifications: B65H

Claim:
1. A sheet transport apparatus comprising: a first roller pair configured to transport a sheet; a second roller pair configured to transport a sheet and that is disposed downstream of the first roller pair in a sheet transport direction, the second roller pair being provided to be able to abut and separate; a second rollers state switching mechanism configured to switch a state of the second roller pair between an abutting state where two rollers of the second roller pair are abutted each other and a separate state where the two rollers are separate from each other; a sheet alignment mechanism having a third roller pair that is disposed downstream of the second roller pair in the sheet transport direction, the sheet alignment mechanism configured to be performing sheet alignment by transporting the sheet using the third roller pair in a state where the second roller pair is separated; a sheet length obtaining unit configured to obtain a sheet length in the sheet transport direction; and a controller configured to control the sheet alignment mechanism, the controller causing the sheet alignment mechanism not to perform the sheet alignment in a case where the sheet length obtained by the sheet length obtaining unit is longer than a distance from the first roller pair to the sheet alignment mechanism in the sheet transport direction.