| 摘要 |
<p>1511577 Ordering sheets XEROX CORP 17 Oct 1975 [25 Nov 1974] 42677/75 Heading B8R To reverse the direction of travel of a sheet, e.g. in a copying machine, the sheet is fed between rollers 34 and 36 towards an idler roller 42 and a single revolution roller 44 of non- uniform diameter. Upon detection of the passage of the trailing edge of the sheet from between rollers 34 and 36 (e.g. by phototransistor 51) roller 44 is reverse rotated through one revolution so that its larger diameter portion nips the sheet and feeds it to the nip of rollers 34 and 52.</p> |
