Abstract: The present invention provides a nano-ranged wide color gamut and environmental-friendly UV inkjet printing system for a hard substrate comprising a carrier, an ink supplier, a printing head and a controller. The carrier receives the hard substrate thereon and the ink supplier includes a container space for containing an ink. The color gamut of the ink comprises basic colors of RYBK. The printing head receives the ink from the ink supplier, and the controller generates a control signal to control the printing head to spray coating the ink onto the surface of the hard substrate directly. The present invention is able to print the ink directly onto the surface of the hard substrate while utilizing the UV light for curing the ink into solid. The ink exhibits the physical properties of low surface tension, nano particles, environmental friendly, UV excitable, short duration of drying, great adhesiveness and high transparency.

Abstract: A method of circuit layout by photosensitive environment-friendly ink, which is used in a printed circuit board having a copper foil layer. The method comprises: providing photosensitive environment-friendly ink; disposing a circuit layout pattern, and injecting the photosensitive environment-friendly ink on the copper foil layer according to the circuit layout pattern to form the printed circuit board having the circuit layout pattern thereon; exposing the printed circuit board under light to have the photosensitive environment-friendly ink reacted with ultraviolet light in the light; and copper cleaning and alkaline cleaning the copper foil layer to expose the circuit layout pattern corresponding to the photosensitive environment-friendly ink on the printed circuit board.

Abstract: A nano wide color gamut transparent environment-friendly inkjet ink composition used on a base, which comprises color paste, mixed solvent, resin and additive. The color paste is used for polymerizing red toner, yellow toner, blue toner and black toner having nanoparticles. The mixed solvent is used for diluting the ink composition and being a carrier of the ink composition. The resin is used for providing drip-drying, dispersity and glossiness of the ink composition. The ink composition of the invention can be used to achieve high permeability, wide color gamut, drip drying, low ink bleeding, and high resolution.