| 摘要 |
1,272,167. Colour matching by computer. MOBIL OIL CORP. 15 Sept., 1970 [19 Sept., 1969], No. 44042/70. Heading G4A. A system for colour matching a sample includes a computer for selecting appropriate pigments from a set of pigments and for determining the concentration ratios of the selected pigments relative to a standard pigment (e.g. White). The reflectance of the sample is measured at a plurality of wavelengths, these values being fed to the computer as input. The pigment selection algorithm is illustrated by Fig. 1. The computer may be used additionally to control the pigment flow rate in a continuous pigment blending process as illustrated in Fig. 2 (not shown). |
