Cyanine dyes and lithographic printing plate precursors comprising such dyes

摘要

A lithographic printing plate precursor includes a cyanine dye, characterized in that the cyanine dye includes two different chromophoric groups, a chromophoric group that has its main absorption in the infrared region and another chromophoric group that has its main absorption in the visible light region. The cyanine dye has preferably a structure according to Formula I: