3215.19.90.50 - Offset lithographic

This HTS category, 3215.19.90.50, specifically classifies offset lithographic printing inks. These inks are formulated for use in offset lithography, a printing process where an inked image is transferred from a plate to a rubber blanket and then to the printing surface. This method is widely employed for high-volume commercial printing of publications, packaging, and other graphic materials. The inks are typically liquid or paste-like and contain pigments, binders, solvents, and additives designed to adhere to the printing plates and transfer effectively.

The distinction of this category lies in the specific printing process it serves. It differs from sibling categories such as flexographic (3215.19.90.20), gravure (3215.19.90.30), and letterpress (3215.19.90.40) inks, each of which is designed for distinct printing technologies with different plate characteristics and ink transfer mechanisms. While all are printing inks, their chemical composition and physical properties are optimized for the specific demands of their respective printing methods.

As this is a leaf node, there are no further subcategories. Classification under 3215.19.90.50 is determined by the ink's intended application in offset lithographic printing. Importers and exporters should ensure that the product is indeed formulated for and predominantly used in this particular printing method to maintain accurate classification. This ensures compliance with customs regulations and facilitates smooth trade operations.