09475 IUPAC Gold Book - doctor blading 10.1351/goldbook.09475 09475 current 1 Coating of solution or slurry drawn to uniform film by use of a knife edge or doctor blade. The term has been borrowed from printing and coating technologies. It is believed that it derives from the blades employed in letter press equipment that were used to wipe so-called ductor rolls, the term "ductor" becoming doctor over time. PAC, 2020, 92, 1861. 'Terminology of polymers in advanced lithography (IUPAC Recommendations 2020)' on page 1872 (https://doi.org/10.1515/pac-2018-1215) https://goldbook.iupac.org/terms/view/09475/html https://goldbook.iupac.org/terms/view/09475/json https://goldbook.iupac.org/terms/view/09475/plain Citation: 'doctor blading' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09475 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-30T08:14:23+00:00