Flat bed image scanner
US5801851A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Aug 29, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flat bed image scanner uses a contact image sensor to scan a document. The distance between the contact image sensor and the glass window, over which the document is placed, is minimized and held constant by inserting a lubricating element between the contact image sensor and the glass window. The lubricating element may comprise two pads placed at the two ends of the contact image sensor. The lubricating element can also be integrated structurally with the contact image sensor. The material of the lubricating element can be nylon or some other kinds of plastic. The lubricating element may also comprise two rollers placed at the two ends of the contact image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.