Color adjustment method and image forming system using gamma curve associating densities of patches from different printers
US8625179B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2012 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Jul 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a color adjustment method for each of image forming apparatuses, including: a gradation pattern creation step of forming a gradation pattern image including patches different in gradation for each of colors in n pieces of coloring materials; a density detection step of detecting densities of the respective patches, and obtaining density information; a gamma curve creation step of associating the density information of the respective patches in a second image forming apparatus with that in the first, and creating a gamma curve correcting a gradation of received image data so as to obtain densities of the respective patches in the first image forming apparatus; and a color adjustment step of extracting respective color components, deciding output values based on the gamma curve corresponding to the second image forming apparatus, creating output image data, and forming an image on a sheet in the second image forming apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.