s to a high-molecular weight polymer having a mesh or network structure.Where the ink of the invention comprises an organic solvent, such as methyl ethyl ketone, cyclohexanone or cyclopentanone or a mixture of thereof, examples of a preferred binder polymer include, without limitation, crosslinkable copolymersprepared from one of the following pairs of monomers: hydroxyethyl methacrylate (HEMA)/et