Abstract: An apparatus for extracting pulverous or granular material from a mixture means of a solvent brought into contact with the mixtue. A receptacle is provided for receiving the material to be extracted as well as the solvent. A conduit system is connected with the lower portion of the receptacle and empties into the upper portion of the receptacle. Within the conduit system is arranged a device for conveying the solvent to be withdrawn from the receptacle as well as the mixture containing the material to be extracted. The device also serves to mechanically form a dispersion of the material to be extracted in the solvent. The device includes a rotatable body operated at a speed of 10,000 to 30,000 rpm.

Abstract: The composition of liquid toners and hence the recycling of such toners is simplified when, as the only substance controlling the charge of the pigments and luminescent substances, respectively, an aluminium (III) salt or a chromium (III) salt of an anthranilic acid possibly substituted at the benzene nucleus is used and the amino group of which is acylated with a fatty acid containing 6 to 20 carbon atoms.