For combination machines, US customs classification typically follows the component that imparts the essential character of the machine. If the offset unit performs the primary printing function and the inkjet unit is an auxiliary enhancement (e.g., for variable data), the press would likely be classified as offset machinery. If the functions are genuinely co-equal, a binding ruling request to CBP is the safest path before importation.

No — the curing technology (conventional, UV, or LED-UV) does not change the fundamental classification. These presses transfer ink via a blanket cylinder in the same manner as conventional offset equipment, so they remain classifiable as offset printing machinery. The distinction matters mainly for safety and environmental compliance documentation, not for tariff classification.