Image reading device and image forming apparatus
US8310741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2010 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Feb 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of an image reading device may include a light source, an image reading unit, a drive control unit, a white reference member, a chromaticity detecting unit, a reference value storage unit, a chromaticity change calculating unit, and/or a control unit. An embodiment may include a photoelectric conversion element that reads an image illuminated by the light source. In some embodiments, may measure the chromaticity of a white reference member. In some embodiments, a reference value storage unit may store a reference value representing the chromaticity of an image. In an embodiment, a control unit may control an operation of the device according to the calculated amount of chromaticity change. An embodiment may include measuring the luminous intensity of a light source and storing a reference value representing the luminous intensity of the light source. Some embodiments may include making adjustments to images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.