| abstract |
(57) [Summary] [Object] To provide a liquid for a printing ink for producing a printed matter by an intaglio, letterpress or flexographic printing method. [Composition] The liquid is a metal-free phthalocyanine, two central atoms of lithium, magnesium, zinc, copper, Phthalocyanine having nickel, VO, TiO or AlCl, metal-free naphthalocyanine, two lithium, magnesium, zinc, copper, nickel as central atoms, Naphthalocyanine having VO, TiO or AlCl, It comprises one or more dyes, solvents and binders from the group of nickel-dithiol complexes, aminium compounds of aromatic amines, methine dyes or azulene squaric acid dyes which have an absorption maximum in the range 700 to 1200 nm. [Effect] The liquid has a sufficiently strong absorption in the near infrared range. |