4816.20.00.00 - Self-copy paper

This HTS category, 4816.20.00.00, specifically encompasses self-copy paper, also known as carbonless copy paper. This type of paper is designed to duplicate information written or printed on an upper sheet onto lower sheets without the need for carbon paper. It typically consists of two types of coated paper: a top sheet coated with microencapsulated dye and a bottom sheet coated with a developer. When pressure is applied, the microcapsules rupture, releasing the dye which then reacts with the developer on the sheet below to create a copy.

Within heading 4816, this subheading is distinct from other categories such as carbon paper (heading 4809) and other copying or transfer papers. While all involve transferring an image, self-copy paper utilizes a chemical reaction embedded within the paper itself, rather than a separate carbon-coated layer for transfer. It also differs from other paper-based items like duplicator stencils and offset plates, which serve entirely different reproduction functions. The "Other" category at 4816.90.01.00 would capture any papers within heading 4816 that do not fit the specific descriptions of carbon paper, self-copy paper, or the excluded items like stencils and plates.

As this is a leaf node, there are no further subcategories to introduce. The classification for self-copy paper is therefore finalized at this level, based on its inherent characteristics and function as a self-duplicating paper. Classification relies on the physical composition and intended use of the paper in replicating written or printed information through its integrated chemical coating system.