Influence of Transducer Control in DOD Printing
Abstract:The performance of an ink-jet head depends not only on the mechanical construction of the head but also on the inks and the control of the driving signal of transducers. For a given print-head, the latter two parameters should be considered simultaneously in order to optimize the ejection of the droplet in terms of formation, velocity and size.
In this study, we focus on the design of the electronic control of transducers and the improvement of the Print Quality Optimization Apparatus (PQOA) which helps to investigate in detail the influence of the driving signal. On one hand, the computer controlled frequency function/amplifier has a versatile architecture and can be used to drive various print-heads between −30 and 200 Volts peak-to-peak. On the other hand, the upgrading of the PQOA allows to perform advanced signal processing both on the drive waveform and on the surface profile of the ejected filament.
In the course of our experiments, we have tested extensively the influence of the driving voltage for a given waveform thanks to the versatility of the generator. The results that we have obtained concern the size of drop, the length of the filament tail and the velocity of the droplet. They provide a better understanding of the relationships that exist between the initial perturbation and drop formation process.
Document Type: Research Article
Publication date: January 1, 2000
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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