High Resistivity Materials for Improved Thermal Inkjet Printheads

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High resistivity materials have been investigated as the resistor element in thermal inkjet printheads. The motivation to replace the well-known TaAl or Ta-N resistors is convincing. With higher-value resistors, parasitic losses can be reduced significantly, improving the head efficiency and lowering die temperatures. Further, lower current and higher voltages lead to simpler circuits and permit lower cost power supplies. To reap these benefits, several candidate materials have been investigated with a resistivity typically an order of magnitude or higher than TaAl and Ta-N (∼250 micro-ohm cm). The motivation, material investigation strategy, electrical properties, structural properties, testing results, and thermal modeling will be discussed.

Document Type: Research Article

Publication date: January 1, 2000

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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