Regensburg 2025 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 38: Interfaces and Thin Films II
CPP 38.5: Talk
Thursday, March 20, 2025, 17:30–17:45, H38
The Physics of Water-based Inkjet Printing: Fundamentals in a Nutshell — Helder Savaldor1,2 and •Nicolae Tomozeiu1,2 — 1Canon Production Printing, P.O Box 101, Van der Grintenstraat 1, 5914HH Venlo, The Netherlands — 2Fluids & Flows Group, Department of Applied Physics, Eindhoven University of Technology, The Netherlands
The printing industry is rapidly evolving, driven by advances in understanding physical-chemical processes and societal needs. Digital inkjet printing, especially with water-based inks, has become a cornerstone of sustainable and cost-effective printing, with Canon Production Printing (CPP) leading innovations in this field. The interaction between ink droplets and porous paper is crucial to achieving high-quality prints, and understanding these processes is essential for improving print performance and durability.
This work explores key scientific domains involved in CPP water-based inkjet technology. We focus on: (i) ink formulation through chemical and polymer physics for optimal droplet formation and film creation; (ii) the dynamics of thin films, including ink spreading, evaporation, and imbibition in porous paper; (iii) surface science's role in ink absorption and spreading. We will show the use of Optical Spectroscopy, Scanning Electron Microscopy (SEM), Nuclear Magnetic Resonance (NMR) and uGISAXS to provide deeper insights into ink film formation at the micro- and nano-level. These findings optimize print quality, durability, and color properties, advancing both industrial development and academic knowledge in inkjet technology.
Keywords: inkjet printing; drop dynamics; mechanisms in film formation; end properties of prints