A numerical model has been developed to simulate the firing of an inkjet printhead.
The model evaluates the heat generation and diffusion within the thin film structure, the
phase change and vapor bubble growth in the ink, and the subsequent flow of ink from the
orifice. The heat transfer is modeled numerically throughout the printhead's thin film
structure and ink through an asymptotic integration algorithm. The bubble growth and
fluid flow are coupled and modeled through conservation of momentum, conservation of
energy, and state equations.
The heat transfer model has been validated with simple theoretical solutions and
ink drop weight and velocity have been compared to empirical data. To test the usefulness
of the model as a design tool, parametric studies have been made which characterize pen
performance as a function of several system parameters. The results show that although
the model does not reflect every detail in the firing process, it is useful for predicting
trends and investigating new design concepts. / Graduation date: 1997
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/34325 |
| Date | 25 June 1996 |
| Creators | Davis, Colin C. |
| Contributors | Pattee, Heidi A. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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