Document scanning apparatus for scanning image information on a single sided document whether the document is right side up or upside down
US5270838A · kind A · utility
5Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1991 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Feb 21, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document scanner that is able to reliably discriminate and scan the information side of each simplex document of a stack of documents, i.e. The side containing information, even when some of the documents are upside-down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.