| 摘要 |
<p>PURPOSE:To aim at preventing folds and rumples in the sheet fed to a feeder from occurring, by constituting a pair of feed rollers at the just under downstream of the sheet feeder so as to make pinching pressure to the sheet smaller in a part corresponding to the feeder than the other parts. CONSTITUTION:The sheet S formed in a wavy pattern at a nip part consisting of rollers 6 and 7, alternately set up, of a sheet feeding device 5 is fed to a sheet feeder 1. At this time, since the specified clearance is formed in the nip part of a pair of feed rollers by the step difference part 16 formed in at least one side of these rollers, a wavy flection part of the sheet S is housed in the clearance of the nip part, whereby it is conveyed without receiving any large pinching pressure directly from these paired feed rollers. Therefore, the sheet feeder 1 is able to feed a conveying passage at the yet downstream accurately without making the wavy flection formed in the sheet S into holds, rumples, etc.</p> |
