Both letterpress and flexographic presses use raised-surface relief printing, but flexographic presses specifically use flexible plates (typically photopolymer or rubber) mounted on a cylinder, and they are classified under 844316. Traditional letterpress presses use rigid type, blocks, or plates. If a reel-fed press uses flexible relief plates, it is flexographic and does not belong under 844314. The manufacturer's specification sheet identifying the plate type and printing method is the most reliable classification evidence.

Traditional letterpress has largely been displaced by offset and digital printing in high-volume commercial applications, but reel-fed letterpress equipment remains in use for specialty label printing, security printing, and certain packaging applications. Import volumes under this heading tend to be lower and more sporadic than for offset or flexographic machinery, which can affect lead times for spare parts and service support — a supply-chain consideration worth factoring into procurement decisions.