Image shading correction based on printer cover being open or closed
US10834282B2 · kind B2 · utility
2Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Mar 8, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is an image reading apparatus configured to avoid unnecessarily performing shading correction processing. The image reading apparatus detects whether or not an original is placed on an original tray when detecting an open state of an ADF and then detecting a closed state thereof. In a case where the original is placed on the original tray, the image reading apparatus performs shading correction for flow reading, and in a case where no original is placed on the original tray, the image reading apparatus performs shading correction for platen cover reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.