Printer color correction
US7207645B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 6, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques are disclosed for performing color correction in a color printer. An RGB test image is printed to produce a printed calibration image. Colors in the printed calibration image are measured and compared to expected color values. A color corrector generates a printer lookup table (LUT) based on this comparison. The LUT may be generated based on models of the printer's print engine and previous LUTs. The color corrections are applied to subsequent print jobs to improve the quality of color output. Color measurement and correction may be performed using a closed-loop system contained within the printer that includes a color measurement device (such as a scanner) and a computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.