Movable calibration device for a sheet-fed scanner
US7428078B2 · kind B2 · utility
1Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2005 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A movable calibration device for a sheet-fed scanner includes a calibration sheet and a cam. A scanning module scans an image on the calibration sheet for calibrating the sheet-fed scanner. The cam, driven by a motor, moves the calibration sheet into and out of a scan window of the scanning module. The calibration sheet can be moved out of the scan window without reversing the rotational direction of the motor. The entire calibration sheet is moved in a linear path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.