Image reading apparatus, and image forming apparatus
US9055175B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2014 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is an image reading apparatus including a light source that irradiates an original document that passes through a reading position with light, a light receiving unit that receives reflected light from the original document, a background member that is inclined at an angle where a difference between an incident angle of the light from the light source and a reflection angle of the light to the light receiving unit is smaller than a difference therebetween on the original document present at the reading position, with the original document at the reading position interposed between the background member and the light source, and a foreign substance detecting section that detects, when the original document is not present at the reading position, a foreign substance present at the reading position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.