Printer, print control program, medium having print control program recorded therein, and printing method
US7414751B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2003 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | May 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Colors look differently when observed under sunlight and room light. At least three chromatic colors and additional chromatic colors differing in hue from said three colors are used in combination. The additional colors are those which have a spectral reflectance which smoothens waviness in the spectral reflectance curve of the nearly achromatic color produced by the combination of the three chromatic colors. As the result, the combination of the colors gives rise to a color which has almost uniform spectral reflectance over the entire region of wavelengths. Thus it is possible to obtain printing which is less vulnerable to change in color under different light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.