This paper is intended as an evaluation of a high-resolution thermal print head exceeding 600dpi. In the preceding paper we reported on the optimum structure and shape for 600dpi-head based on a series of experiments on thermal diffusivity of various materials possibly used as components. In the process of development we reached a two-ply structure consisted of a Si-single-crystal substrate superior tin heat conductivity and a low thermal diffusion layer sputtered over the substrate. Carrying out FEM analysis of a 1200dpi-head of the above structure, we came to the conclusion that high resolution of up to 1200dpi was technically achievable. We also confirmed the possibility through print test.
Hirotoshi Terao, Toshifumi Nakatani, Noboru Tsushima, Ikuo Hibino, "Study of 1200dpi High Resolution Thermal Print Head" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP18), 2002, pp 716 - 716, https://doi.org/10.2352/ISSN.2169-4451.2002.18.1.art00070_2