Abstract: The disclosure relates to a solvent-free photocrosslinkable writing ink advantageously for a pen, including, as a percentage by weight relative to the total weight of the ink: a—between 40 and 75% of a photocrosslinkable acrylate and/or methacrylate oligomer, b—between 1 and 55%, optionally, of a photocrosslinkable acrylate and/or methacrylate monomer, c—between 0.5 and 6% of a photoinitiator, d—between 1 and 10% of a dye, advantageously a basic dye, and e—between 0 and 10% of an additive. The present disclosure further relates to a method for securing a writing medium using the ink, the crosslinked ink obtained by crosslinking the ink and a pen for photocrosslinkable ink including the ink.

Abstract: The present invention concerns a solvent-free photocrosslinkable writing ink advantageously for a pen, comprising, as a percentage by weight relative to the total weight of the ink: a—between 40 and 75% of a photocrosslinkable acrylate and/or methacrylate oligomer, b—between 1 and 55%, optionally, of a photocrosslinkable acrylate and/or methacrylate monomer, c—between 0.5 and 6% of a photoinitiator, d—between 1 and 10% of a dye, advantageously a basic dye, and e—between 0 and 10% of an additive. It further concerns a method for securing a writing medium using said ink, the crosslinked ink obtained by crosslinking said ink and a pen for photo-crosslinkable ink comprising said ink.