Office-type ink-jet printers connectable to an ADP machine or network classify under the office-device subheadings (844331 or 844332/844339 depending on whether they are combined multifunction units). Industrial ink-jet printing machines — those designed for marking, coding, or printing on substrates in a production environment — classify under 844319 with other non-offset, non-letterpress printing machinery. The principal use and design context are the key factors.

Many tariff lines within this heading are subject to Section 301 measures when the country of origin is China. The measure applies at the specific 10-digit HTS line level, so importers should verify the applicable action list for each line rather than assuming uniform treatment across the heading.