FIELD: printing industry.
SUBSTANCE: composition contains the first component A) and the second component B). Component A) is selected from the group consisting of: i) 0.1 to 40 wt % of the first particles plurality having a modal particle diameter of 1 to 3 mcm, ii) 1 to 20 wt % of one or more colorants which can be a material having machine-readable properties, preferably selected from the following group: IR absorption properties, luminescent properties and combinations, and iii) their combinations. Component A) can be a material having computer-readable properties, preferably selected from the group: magnetic properties, UV or IR absorption properties, optically variable properties, light polarization properties, electrically conductive, luminescent and their combinations. Component B) consists of: 0.1 to 40 wt % of a plurality of the second particles having a modal particle diameter of 6 to 25 mcm. Moreover, B) can be a material with machine-readable properties, preferably selected from the group: magnetic properties, UV or IR absorption properties, optically variable properties, light polarization properties, electrically conductive properties, luminescent properties, and their combinations. The first component A) and the second component B) have at least one differing characteristic, which is selected from the group: CIE (1976) colour index parameters, machine-readable properties, and their combinations. Wt% is based on the total weight of the paint composition for metallography.
EFFECT: invention provides metallography elements having a number of characteristics that are improved, predictable and controllable, as well as metallographic elements with a complex pattern and precise register with different physical properties, such as machine-readable ones.
21 cl, 10 dwg, 3 tbl
