ULTRAVIOLET-CURABLE INK COMPOSITION FOR INK JET AND INK JET RECORDING METHOD

摘要

An ultraviolet-curable ink composition for ink jet is for use in an ink jet recording method that includes irradiating the ultraviolet-curable ink composition for ink jet applied to a substrate with ultraviolet radiation that has a peak wavelength in the range of 380 to 405 nm from a semiconductor light source to obtain a cured coating. The product of the light transmissivity (%) of the cured coating at a wavelength of 395 nm and the irradiation energy of the ultraviolet radiation (mJ/cm2) is 2.0 or more. The ink composition contains a thioxanthone-based photopolymerization initiator and at least one of yellow coloring material and black coloring material. The OD of the cured coating made from the ink composition is 1.8 or more.

主权项

1. An ultraviolet-curable ink composition for ink jet for use in an ink jet recording method including irradiating the ultraviolet-curable ink composition for ink jet applied to a substrate with ultraviolet radiation having a peak wavelength in a range of 380 to 405 nm from a semiconductor light source to obtain a cured coating,
a product of light transmissivity (%) of the cured coating at a wavelength of 395 nm and irradiation energy of the ultraviolet radiation (mJ/cm2) being 2.0 or more, the ink composition comprising: a thioxanthone-based photopolymerization initiator and at least one of yellow coloring material and black coloring material, an OD of the cured coating made from the ink composition being 1.8 or more.