A method for printing a substrate may comprise positioning a substrate within an enclosure enclosing a printing system, wherein the printing system comprises a printhead device assembly comprising at least one printhead, and performing a printing process on the substrate. and. The printing process may comprise supplying ink from a local ink dispensing reservoir to the printhead device assembly, the local ink dispensing reservoir located inside the enclosure; supplying ink from a local ink replenishment reservoir to the local ink dispensing reservoir so as to maintain, in the local ink dispensing reservoir, a level of ink within a first predetermined range, the local ink dispensing reservoir located inside the enclosure; supplying ink from a bulk ink delivery system, through a fluid line disposed inside an outer conduit, and to the local ink replenishment reservoir so as to maintain, in the local ink replenishment reservoir, a level of ink within a second predetermined range, the bulk ink delivery system located outside the enclosure; and depositing ink from the at least one printhead on the substrate