Method and apparatus for calibrating a four color printer
US5553199A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | May 3, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of calibrating a four color printer capable of printing three colors and black, includes the steps of: forming a minimum black data structure representing a minimum black strategy; forming a maximum black data structure representing a maximum black strategy; for each printable black level, forming a fixed black data structure; and for a specific output color value, finding the minimum and maximum black levels using the minimum and maximum black data structures, determining a desired black level between the minimum and maximum black levels according to a defined black strategy, and determining the three printing color levels from the fixed black data structure corresponding to the desired black level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.