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A New Diamond Micro Heater for Inkjet Printheads

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Abstract:

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.

Document Type: Research Article

Publication date: 1998-01-01

More about this publication?
  • 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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