| 摘要 |
<p>PURPOSE:To have sure correction of curling on an electronic photo-copier by installing parallelly No.1-3 passages between the upstream and downstream roller couples with different transport speeds from each other, and by receiving sheets divergently in accordance with the curled condition of each sheet. CONSTITUTION:No.1-3 passages 10-12 are installed between the upstream and downstream roller couples 8, 9 with different transport speeds from each other. Each copying sheet 5 on which a toner image 4 is fixed while the sheet passes through between a heating roller 2 and a pressurizing roller 3 intrudes into No.3 passage 12 if its curl is below a specific allowable limit of curling, and is tensed by the said roller couples 8, 9 for correction of the curl to a certain degree to be then sent forward. If the curl is oriented upward and its degree is over the allowable limit, the sheet intrudes into No.1 passage 10, where it is tensed by the roller couples 8, 9 and squeezed down by a squeezing part 16 for correction of the curl. If the curl is oriented downward and its degree exceeds a specific allowable limit, the sheet intrudes into No.2 passage 11, where it is in the same manner squeezed upward by another squeezing part 17 for correction of the curl to be then sent forward.</p> |
