Contact image sensor image reading apparatus
US5900951A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Aug 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a CIS (contact image sensor) scanner which apples a CIS module with two bracket arms for assuring a document sheet in focus. The CIS module is mounted on a pair of shafts. Each shaft is rested on a pair of shaft bearings. At each shaft bearing, there is a rigid body interposed between the shaft and the document sheet. Inside each shaft bearing, there is an elastic element under the shaft for uplifting the CIS module to press the rigid body firmly onto the bottom surface of the sheet table. The rigid body and the elastic elements can help to maintain a stable distance between the sheet table and the CIS module, thereby improving the picture quality of images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.