Explanatory notes
… images are formed, directly or indirectly, by the action of light or other forms of radiation on photosensitive, … paper, paperboard and textiles of Chapter 37 are those with one or more layers of any emulsion sensitive to light or … paper, paperboard and textiles are included in the Chapter only when unexposed or exposed (negative or positive) but …Legal note
… visible images are formed, directly or indirectly, by the action of light or other forms of radiation on photosensitive, including thermosensitive, …