UV-curable ink formulations are provided that are capable of being cured under low-energy conditions, such as with a conventional mercury vapor lamp operating at half or less of the lamp's nominal wattage or using an LED lamp. Methods for forming a printed ink image on a substrate using the ink are also provided, which permit maintenance of relatively high line speeds while consuming less energy due to the use of lower-wattage lamp settings.

UV-curable ink formulations are provided that are capable of being cured under low-energy conditions, such as with a conventional mercury vapor lamp operating at half or less of the lamp's nominal wattage or using an LED lamp. Methods for forming a printed ink image on a substrate using the ink are also provided, which permit maintenance of relatively high line speeds while consuming less energy due to the use of lower-wattage lamp settings.

At least one siccative vegetable oil with an iodine value of at least 80 gI/100 g for giving antiviral properties to a deposit formed on the surface of an inert substrate.

A black resin composition is provided that presents an achromatic reflected color tone, has a high visible-light-blocking ability and a high near-infrared penetrability, and exhibits a smaller amount of transmitted scattered light, where the black resin composition includes (A) a resin, (B) a colorant, and (C) an organic solvent, wherein the black composition includes a red pigment and a blue pigment as (B) the colorant, wherein amount of the red pigment is 20 to 80 wt % with respect to the total amount of (B) the colorant, and wherein crystalline size of the red pigment in a colored film composed of a cured product of the black resin composition is 5 nm or more and 25 nm or less, as calculated from a half bandwidth determined from a main peak of an X-ray diffraction spectrum obtained using CuK rays as an X-ray source.

A black resin composition is provided that presents an achromatic reflected color tone, has a high visible-light-blocking ability and a high near-infrared penetrability, and exhibits a smaller amount of transmitted scattered light, where the black resin composition includes (A) a resin, (B) a colorant, and (C) an organic solvent, wherein the black composition includes a red pigment and a blue pigment as (B) the colorant, wherein amount of the red pigment is 20 to 80 wt % with respect to the total amount of (B) the colorant, and wherein crystalline size of the red pigment in a colored film composed of a cured product of the black resin composition is 5 nm or more and 25 nm or less, as calculated from a half bandwidth determined from a main peak of an X-ray diffraction spectrum obtained using CuK rays as an X-ray source.