Decurling and offsetting device
US4977432A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jul 13, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0089
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device is disposed in the path of paper leaving a printing unit or processor such as an office copier, facsimile or non-impact printer and has an arcuate concave guide and a feed roll which causes the paper to pass between the guide and the feed roll to decurl the paper. The space between the guide and the roller is greater than the thickness of the paper and the paper is bent in the direction opposite to its curl as it passes through the arched space, while the beam strength of the paper and the change in direction of the paper maintain adequate drive friction on the paper. The feed roll is mounted for movement laterally of the direction of paper travel to cause it to be laterally displaced or offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.