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A New Diamond Micro Heater for Inkjet Printheads

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Thermal inkjet printheads play a dominating role in drop-on-demand printhead technology. Improvements of efficiency and lifetime are an ongoing challenge for research and development in this field. Commonly used micro heaters are based on refractory metal alloys. Therefore, a complex stack of various materials is necessary to protect the heater against oxidation and mechanical strains which limit the performance of such micro heaters.

Here, a novel thermal inkjet heater based on diamond is presented. In contrast to conventional micro actuator systems for the diamond inkjet passivation layers are not necessary. This reduces the manufacturing costs and increases the thermal efficiency of the micro heater. In addition, the excellent mechanical properties of diamond guarantee protection against cavitation damages. The new thermal inkjet heater has been tested successfully and its advantages are demonstrated by experiments using high speed cinematography.

In conclusion, the first prototype of the new thermal inkjet heater based on diamond is superior to common systems in regard to heating efficiency and resistance against mechanical strains.
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Document Type: Research Article

Publication date: 1998-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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