Colour formulation by mixing in which a coloured composition is dispensed from a container having an active memory device associated therewith.

摘要

A method of producing a composition of specified colour in which at least one composition containing a specified colouring agent is admixed with at least one other composition, wherein the composition containing the colouring agent is dispensed from a container having associated with it an active memory device, such as a micro-chip, carrying information concerning the colorant characteristics of that composition, and dispensing means attached to the container is responsive to that information so that the correct quantity of the coloured composition is dispensed relative to the quantity of the other composition with which it is mixed.