Patent ID: 6290221
Filing Date: 2001-09-18
Classification: B65H,G03G

Abstract:
An image forming apparatus having duplex sheet feeding means and image forming means for forming images on a first and a second surfaces of a sheet, the image forming apparatus comprising:the duplex sheet feeding means comprising:sheet stacking means for stacking sheets sequentially delivered after forming of an image on the first surface of the sheet by the image forming means;sheet feeding means provided in the sheet stacking means for feeding a lowest stacked sheet by contacting the lowest stacked sheet's lower surface toward the image forming means to form an image on the second surface of the sheet;sheet pressing means in contact with the top of the sheets to be stacked in the sheet stacking means for applying a specified pressing force to the sheet feeding means via the sheet;a receiving portion provided to the sheet pressing means to receive a sheet that is next conveyed to the sheet stacking means; anddriving means for rotating the sheet pressing means to put the sheet received by the receiving portion for clamping the receiving sheet between the sheet feeding means and the sheet pressing means, the receiving portion receives a sheet that is next stacked in the stacking means.