How to calculate the prescription of textile printing and dyeing in accordance with shades given

摘要

The invention relates to a method for determining a dyeing orwwwwwwwwa printing formula corresponding to a prescribed colour, which is characterised in that … …  a) a prescribed colour is defined in an FTa*b* colour space, FT being a colour depth characteristic which defines locations of identical colour depth irrespective of hue, which are situated by definition in a plane of the FTa*b* colour space, and a* and b* being data of the CIELab colour coordinate system, …  b) for each colour depth plane the FTa*b* colour space is segmented into triangular areas by means of a* and b* data of the dyes to be used for readjustment, …  c) in each defined colour depth plane the prescribed a* and b* data correspond to a specific ratio of the dyes of the relevant segment of the colour space plane, and …  d) the ratio of the dyes of the relevant segment is obtained by an iterative method. … …??Dyeing and printing formulae that are true to the original can be produced using the method according to the invention. …IMAGE…