Patent ID: 9395674
Filing Date: 2016-07-19
CPC Classification: B65H,G03G

Claim Text:
1. A curl correction apparatus disposed downstream in a sheet conveying direction with respect to a fixing unit which fixes a toner image onto a sheet, the apparatus for correcting a curl of the sheet, the apparatus comprising: a first roller; a second roller having a hardness lower than that of the first roller, the first roller and the second roller forming a nip portion; an urging member configured to urge the first roller to the second roller; a guide member configured to guide the sheet onto which the toner image is fixed by the fixing unit to the nip portion, the guide member being disposed on an upstream side of the nip portion in the sheet conveying direction, wherein a length of the nip portion in the sheet conveying direction at a longitudinal central portion of the nip portion is shorter than a length of the nip portion in the sheet conveying direction at two longitudinal end portions of the nip portion, wherein a downstream edge of the guide member in the sheet conveying direction at a longitudinal central portion of the guide member protrudes further in the sheet conveying direction than a downstream edge of the guide member in the sheet conveying direction at the two longitudinal end portions of the guide member, and wherein the guide member is positioned such that the downstream edge of the guide member at the longitudinal central portion of the guide member overlaps with the first roller in the conveying direction when the first roller and the guide member are viewed in an urging direction of the urging member.