The principle of UV ink

UV ink has the characteristic of selective absorption of UV light. Drying is affected by the total energy of UV light source radiation and the energy distribution of different wavelengths of light. Under the irradiation of UV light, the UV ink photopolymerization initiator absorbs photons of a certain wavelength and is excited to an excited state, forming free radicals or ions. Then, through intermolecular energy transfer, the polymerized prepolymer and photosensitive monomers and polymers become excited states, generating charge transfer complexes. These complex particles continuously crosslink and polymerize, solidifying into a film.