| 摘要 |
A method of making an improved dispersion of magnetic particles, inorganic pigments, organic pigments, or carbon black, in a liquid carrier by continuously subjecting said dispersion to high sheer forces to deagglomerate the particles, while concurrently extruding the dispersion from regions of high pressure to regions of lower pressure, until a dispersion is obtained that has a narrow distribution of particle sizes, with the particles being uniformly distributed throughout the carrier. Also disclosed is a method for making an ink by dispersing particles in a heated medium that comprises an oil, without the presence of any volatile organic solvent, and after forming such a dispersion, continuously adding a suitable ink vehicle to said dispersion to form the desired ink without allowing the dispersion to solidify. |
