Error diffusion in color printing where an intra-gamut colorant is available
US5982992A · kind A · utility
18Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Sep 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a digital printing apparatus in which primary colorants are selected by an error-diffusion process, a method takes into account situations in which a colorant is selectable from within the gamut defined by certain other primary colorants. In the case of a printer in which, in addition to CMYK colorants, a mid-gray colorant is also selectable, the method avoids the problem in which an error-diffusion algorithm mandates the simulation of colors outside the gamut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.