ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,139, issued on April 14, was assigned to Domino UK Ltd. (Great Britain).

"Wash valve" was invented by Richard Thomas Calhoun Bridges (Cambridge, Great Britain), Justin Chase (Cambridge, Great Britain), Antonio Jesus Martin Arrabal (Cambridge, Great Britain) and Stuart Mark Walkington (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A continuous inkjet printer 2 has a drop generator 16, an ink source 7, an ink feed line 17 delivering ink from the ink source 7 to the drop generator 16, a solvent source 8, a solvent feed line 35 delivering solvent from the solvent source 8 to the drop generator 16, a flush valve 37 controlling ...