High Speed Imaging and Analysis of Jet and Drop Formation
Abstract:New techniques have been developed for analyzing in detail the shape and development of ink jets and drops. By using flash illumination of very short duration (ca. 20 ns), high-quality, singleevent digital images of jets and drops can be captured. A computer program, PEJET, has been written to automate the processing of such images and to generate quantitative data about the whole ink stream. From this data it is then possible to compute the variation in fluid volume, volume flow and velocity as a function of both position and time. The method has been shown to have high accuracy. The results can be used to study the influence of nozzle design, drive waveform and fluid properties on jet and drop formation, as well as to provide accurate data for comparison with the results of computational modelling.
Examples of typical results from a drop-on-demand system are presented that illustrate the potential of the method to compare quantitatively the performance of print systems and inks.
Document Type: Research Article
Publication date: January 1, 2006
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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