PRINTING INK FOR PROTECTION OF PRODUCTS AGAINST FALSIFICATION

摘要

FIELD: printing arts; printing inks for securities; protection against falsification. ^ SUBSTANCE: proposed printing ink contains pigment possessing protective properties, binder and thinner; pigment contains ultra-dispersed powder of rare-earth ferrite-garnet selected from group including Y3Fe5O12, Ln3Fe5O12, YxLn3-xFe5O12, where Ln is rare-earth element, 0<=x<=3, Y3-xBixFe5O12, where 0<=x<=2 with sizes of crystallites not exceeding 100 nm in the amount not exceeding 85% of weight of ink. Optical characteristics are extended within 380-750 nm and infrared transparence is increased within 0.74-3.0 mcm. ^ EFFECT: enhanced identification due to magnetic properties. ^ 8 dwg, 1 tbl, 3 ex