Patent ID: 8750780
Filing Date: 2014-06-10
Classification: G03G

Abstract:
1. An apparatus comprising: a sheet feeding unit configured to feed a sheet which is continuous and held as a roll; a decurling unit configured to exert a decurling force on the sheet fed from the sheet feeding unit to reduce a curl of the fed sheet; a skew correction unit configured to correct skew of the sheet passed through the decurling unit; a printing unit located downstream of the skew correction unit, configured to perform printing on the sheet passed through the skew correction unit; a cutter unit located downstream of the printing unit, configured to cut the sheet; and a storing unit configured to store the sheet for duplex printing, wherein, in the duplex printing, the sheet is fed from the storing unit toward the printing unit through the decurling unit and the skew correction unit, the sheet printed on a first surface by the printing unit is stored in the storing unit and cut by the cutter unit, then the sheet is fed from the storing unit toward the printing unit through the decurling unit and the skew correction unit, then the sheet is printed by the printing unit on a second surface, and the sheet cut by the cutter unit and left on a printing unit side is returned to the sheet feeding unit through the skew correction unit and the decurling unit, before the storing unit starts feeding, the decurling force when the sheet is returned from the printing unit to the sheet feeding unit is reduced from when the sheet is fed from the sheet feeding unit to the printing unit.