Image processing method and image forming method
US6002498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Y image, M image, C image and a mixed-dye image wherein Y, M and C are mixed are prepared by an image forming apparatus, analytical density for each of Y, M and C components in their complementary color wavelength regions is measured by a densitometer for each of Y image, M image and C image, then Y image, M image, C image and a mixed-dye image are read by the aforesaid image reading apparatus and spectral densities for in B, G and R wavelength regions are obtained. A conversion function for obtaining analytical density from spectral density is obtained from the spectral densities obtained by the image reading apparatus and the analytical density obtained through measurement by a densitometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.