It is a general principle that measurement is key to consistently successful innovation, and this principle certainly holds when it comes to inkjet R&D.Deconvolving causes of poor performance, like misting, wetting, satellites, and poor sustainability, while in production, quickly becomes very difficult and expensive.New analysis tools have become available over the last years, however, by which these problems can now be identified and addressed independently. [1]Drops in flight are not only visualized but repeatably measured, using high speed strobe and cameras, capable of capturing individual drops as small as 10um in diameter, or traveling at speeds over 50 m/s, using a single strobe. [2]Significant automation is also possible, including analysis of all jets in a row, or analysis of inkjet performance at a range of frequencies. [3]Over the last year, even newer tools for inkjet R&D have become available, notably now including a fully integrated testing and printing platform, which includes drop watching and analysis, belt printing with print controller, and adjustable ink supply, in a single system.These new ink development platforms may also include a drop weigh station, X––-Y print table including densitometer, laser, and even automated print quality analysis of the final product.Direct imaging of drop––-substrate interaction is becoming available, as well, by using a triggered strobe and motion stage to capture the impact of drops on custom surfaces, or on transparent material.With these new tools, we can expect inkjet innovation and performance improvement to continue apace, with applications in printed electronics, ceramics, textiles, 3D, medicine, science, and much more. [4, 5]Our goal in this presentation will be to give an overview of these new innovative techniques, tools, and products for inkjet R&D.
Paul Best, "Innovations in Inkjet Analysis" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP30), 2014, pp 188 - 190, https://doi.org/10.2352/ISSN.2169-4451.2014.30.1.art00046_1