A printing system comprising: a gas enclosure for housing the printing system; a substrate support apparatus in the gas enclosure; a printhead device assembly in the gas enclosure, the printhead device assembly having a printhead, wherein the printhead device assembly is mounted to a motion system configured to move the at least one printhead relative to a substrate when supported by the substrate support apparatus; a local ink delivery system in the gas enclosure and mounted to the motion system separately from and proximal the printhead device assembly and operably connected to the printhead device assembly, wherein the local ink delivery system comprises: a local ink dispensing reservoir, wherein the local ink dispensing reservoir in flow communication with the printhead; a local ink replenishment reservoir in flow communication with the local ink dispensing reservoir, configured to maintain a constant level of ink in the local ink dispensing reservoir; and a bulk ink delivery system located exterior to the gas enclosure, wherein the bulk ink delivery system is in flow communication with the local ink replenishment reservoir, and is configured to maintain a sufficient level of ink in the local ink replenishment reservoir, the bulk ink delivery system being in flow communication with the local ink replenishment reservoir by a double conduit system. a gas enclosure for housing the printing system; a substrate support apparatus in the gas enclosure; a printhead device assembly in the gas enclosure, the printhead device assembly having a printhead, wherein the printhead device assembly is mounted to a motion system configured to move the at least one printhead relative to a substrate when supported by the substrate support apparatus; a local ink delivery system in the gas enclosure and mounted to the motion system separately from and proximal the printhead device assembly and operably connected to the printhead device assembly, wherein the local ink delivery system comprises: a local ink dispensing reservoir, wherein the local ink dispensing reservoir in flow communication with the printhead; a local ink replenishment reservoir in flow communication with the local ink dispensing reservoir, configured to maintain a constant level of ink in the local ink dispensing reservoir; and a bulk ink delivery system located exterior to the gas enclosure, wherein the bulk ink delivery system is in flow communication with the local ink replenishment reservoir, and is configured to maintain a sufficient level of ink in the local ink replenishment reservoir, the bulk ink delivery system being in flow communication with the local ink replenishment reservoir by a double conduit system. a local ink dispensing reservoir, wherein the local ink dispensing reservoir in flow communication with the printhead; a local ink replenishment reservoir in flow communication with the local ink dispensing reservoir, configured to maintain a constant level of ink in the local ink dispensing reservoir; and a bulk ink delivery system located exterior to the gas enclosure, wherein the bulk ink delivery system is in flow communication with the local ink replenishment reservoir, and is configured to maintain a sufficient level of ink in the local ink replenishment reservoir, the bulk ink delivery system being in flow communication with the local ink replenishment reservoir by a double conduit system.