Patent ID: 9044973
Filing Date: 2015-06-02
Classification: B41J,B65H

Abstract:
1. A sheet conveying apparatus comprising: a conveyance roller; a pinch roller unit configured to nip a sheet with the conveyance roller, wherein the pinch roller unit includes a first roller portion and a second roller portion adjacent to each other, and the first roller portion is disposed farther away from a center of the sheet in a width direction of the sheet than the second roller portion; and a mechanism having a drive source configured to change a pressing force that the first roller portion applies to the conveyance roller and a pressing force that the second roller portion applies to the conveyance roller, respectively, wherein, in a first case where a sheet to be used has a medium size in the width direction such that an end of the sheet is nipped by a part of the first roller portion and the sheet is nipped by an entire extent of the second pressing roller, the mechanism sets a pressing force of the first roller portion smaller than a pressing force of the second pressing roller portion, wherein in a second case where a sheet to be used has a large size in the width direction such that the sheet is nipped by an entire extent of the first roller portion and an entire extent of the second roller portion, the mechanism sets a pressing force of the first roller portion and a pressing force of the second roller portion equal to each other, and wherein in a third case where a sheet to be used has a small size in the width direction such that the sheet is not nipped by the first roller portion, the mechanism sets a pressing force of the first roller portion smaller than that in the first case.