SILVER INK CONTAINING HUMECTANT MIXTURE FOR INKJET PRINTING

摘要

The present invention provides an aqueous ink containing =3% silver particles having improved jetting performance which can be used reliably for printing of silver traces to obtain desired conductivity on printed media. The humectant (co-solvent) type/loading and surfactant type/loading described herein prevents nozzle drop outs or clogs for a long period of time without an extensive maintenance which is normally required for high solid inks. In a preferred embodiment, the present invention provides silver ink formulation containing humectant mixture of 5-15% 1, 2-propanediol and 5-15% of glycol ethers compound with the following structure: R-[OCH