| 摘要 |
<p>An image forming apparatus arranged so that the leading end of a sheet can be exactly stopped in a nip position of registration rollers (39), and an image transferred to the sheet is not shifted. A locking device (150) is provided in relation to the registration rollers (39) provided in a bypass conveying path (D4). When the leading end of a cut sheet is inserted into the bypass conveying path (D4) and is fed to the registration rollers (39), the registration rollers (39) are brought into a state where it cannot be rotated by the locking device (150). Therefore, the leading end of the cut sheet fed is reliably stopped in the nip position of the registration rollers (39), and cannot enter the bypass conveying path (D4) beyond the position. The conveyance of the cut sheet is thereafter resumed by the registration rollers (39), whereby the sheet is subjected to so-called secondary sheet feeding to an image forming section. At the same time, the locking device (150) is turned off, whereby a load by the locking device (150) is not applied to the registration rollers (39) so that the registration rollers (39) are freely rotated smoothly. When the trailing end of the cut sheet separates from the registration rollers (39), therefore, the cut sheet is not vibrated. <IMAGE></p> |
