Curl correction device, and image forming apparatus having the curl correction device
US6619657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 1, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H5/025
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet conveying device includes an endless belt for conveying a sheet, at least two stretching shafts arranged to revolvably stretch the endless belt, a rotatable pressing roller arranged to push the stretched endless belt from outside, the sheet being arranged to be conveyed in a state of being pinched between the endless belt and the pressing roller, and springs for pressing the pressing roller so as to make the pressing roller movable in a direction of being pushed to the endless belt and in a direction of being released from being pushed to the endless belt. Further, a curled-sheet correction device includes an endless belt arranged to circulate in a state of being wrapped around a plurality of guide rollers, and at least one curl correction roller arranged to press the endless belt in such a direction as to narrow a circulating area of the endless belt, wherein, among the plurality of guide rollers, a driving guide roller to which a rotative driving force is imparted is formed to have a straight generatrix, and curl of a curled sheet is corrected while the curled sheet is conveyed jointly by the endless belt and the curl correction roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.