Document reading apparatus
US8488218B2 · kind B2 · utility
2Cited by
14References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0091
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document reading apparatus includes an irradiation unit configured to irradiate a document reading position with visible light and infrared light, a reading unit configured to read an image of visible light and an image of infrared light reflected from the document on the document reading position, and an extraction unit configured to extract a transparent toner image on a document based on the visible light image and the infrared light image read by the reading unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.