Apparatus and process for supplying radiation energy onto printing material in a planographic printing machine

摘要

The source in apparatus for projecting near IR radiation onto printed material at a position on the running track following the roller nip in a litho-printing machine emits only radiation whose wavelength is non-resonant to the absorption wavelengths of water. The source (10) in apparatus for projecting near IR radiation (12) onto printed material (14) at a position (116) on the running track (16) following the roller nip (18) in a litho-printing machine emits only radiation (12) whose wavelength is non-resonant to the absorption wavelengths of water (i.e. absorption by water at 20 degrees C is below 10 (especially below 0.1)%. An Independent claim is also included for projecting near IR radiation (12) onto printed material (14) at a position (116) on the running track (16) following the roller nip (18) in a litho-printing machine, the absorption of the radiation energy by the printing ink being supported by inclusion in the ink of an IR absorber.