COLOURED PIGMENTS, PARTICULARLY MAGNETIC PIGMENTS AND THEIR PREPARATION

摘要

The pigments are characterised in that they comprise: - an inorganic support, - at least one oxide, - at least one dye, the oxide being present at the surface of the support, the dye being absorbed onto the support or onto the oxide and/or included in the oxide. The pigments can be employed in the manufacture of developing powders.