Thermal Ink Jet (TIJ) depends on stable, consistent nucleation to create drops of uniform mass. The shape of the nucleating
pulse is a contributing factor to the size and stability of the ejected drop. The size of the ejected drop can also be increased by
the presence of a warming pulse immediately preceding the nucleating pulse. This paper summarizes the results of
experiments designed to investigate these two phenomena.
David A. Johnson,
"The effect of heating pulse shape on drop size and stability in thermal ink jet", Proc. SPIE 1670, Color Hard Copy and Graphic Arts, (1 May 1992); doi: 10.1117/12.2322233; https://doi.org/10.1117/12.2322233