Research on Micro Heater Efficiency for Thermal Inkjet Head
Abstract:Micro heaters for thermal inkjet print heads are investigated to estimate the effects of heater size and operating condition on its thermal efficiency. Tantalum Aluminum (TaAl) heaters, 0.15μm in thickness, are prepared on silicon oxide layer. Silicon nitride film of 0.4μm thickness covers the heater. Visualization technique is applied to observe bubbles in open pool condition. Volume and life time of bubble are measured from CCD images of plane and side views of the bubble generated at the heat flux range of 0.5∼5.0GW/m2.
Thermal conduction simulation for the heater provides bubble nucleation pressure. Bubble work is calculated with Asai's pressure model and the visualization results; bubble life time and volume. Then, thermal efficiency of the heater defined as the ratio of bubble work to the electric input energy can be estimated.
Document Type: Research Article
Publication date: January 1, 2003
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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