Three-fold Increase in Inkjet Speed of Piezoelectric Shared Wall Technology Exploiting Single Cycle Operation
Abstract:A combination of novel piezoelectric inkjet print head technologies such as greyscale, shared wall and genuine throughflow have led to the development of inkjet print heads able to deliver the quality and reliability demanded by modern single-pass printing applications. While shared wall technology can provide benefits such as acoustic firing and reduced drive voltage, there are limitations in the final achievable firing frequency, dictated by a 3-cycle firing pattern (active-idle-idle). As a result the print speed is restricted.
Recent advances in the exploitation of the base shared wall technology have allowed the development of single cycle nozzle operation (always active) for shared wall devices. This has yielded approximately a three-fold increase in firing frequency and hence the three-fold increase in print speed from a print head of similar footprint. Such dramatic improvement has been possible by deeper understanding of the events involved in the complete drop ejection cycle combined with clever rearrangement and overlapping of the events for arrays of nozzles working in synchronization.
Three implementations of a single cycle operation have been explored, some which impose imaging limitations and others which use technically complex solutions but imaging capabilities are unhindered. Commercialization of these technology variants is currently underway with some already deployed in end user production environments.
Document Type: Research Article
Publication date: January 1, 2009
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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