Essential function governs tariff classification: a Risograph operating like screen printing is printing machinery, not duplicating machinery.

Tariff classification of a Risograph turned on its essential function, the HSN Explanatory Notes and the way the machine operated. The Court treated the machine's digital scanning, thermal master-making and ink-transfer process as closely akin to screen printing, with the master serving a stencil-like role. On that basis, it fell within printing machinery under sub-heading 8443.50 and not duplicating machinery under sub-heading 8472.90. The Notes to heading 84.72 were read as excluding small printing machines even if they also duplicate, while heading 84.43 covered small office printing machines sometimes wrongly described as duplicators. The earlier view in Pioneer International was held incorrect.

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Issues: Whether the Risograph machine was classifiable as a printing machine under sub-heading 8443.50 of the Customs Tariff Act, 1975 or as a duplicating machine under sub-heading 8472.90 of the Customs Tariff Act, 1975.

Analysis: The classification had to be determined by the machine's true nature, the HSN Explanatory Notes and the manner in which the machine worked. The Notes to heading 84.72 excluded small printing machines even if they could also perform duplicating functions, while the Notes to heading 84.43 included certain small office printing machines that are sometimes improperly referred to as duplicating machines. The Risograph was found to work through digital scanning, thermal master-making and an ink transfer process closely akin to screen printing, where the master functions like the stencil-screen used in screen printing. Its essential function was therefore printing and not mere duplication. The earlier view in Pioneer International was held not to lay down the law correctly.

Conclusion: The Risograph machine was held to be a screen printing machine falling under sub-heading 8443.50 and not a duplicating machine under sub-heading 8472.90.

Ratio Decidendi: For tariff classification, the machine's essential function and the HSN Explanatory Notes prevail over a mere description as a duplicating apparatus; a small office machine whose process is akin to screen printing is classifiable as printing machinery rather than as a duplicating machine.

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