A finite-difference model simulates temperature distributions in two blocks of materials with one block moving with respect to the other block and with a sliding contact region between these blocks. Two different methods of imposing motion with SINDA finite-differenceequation solvers are investigated: SEVER sequentially connects and disconnects different thermal conductors between the two blocks to constitute the sliding contact; SHUTTLE simply marches the temperature profile through the nodes in the moving block at the rate corresponding to the relative speed of the blocks. The SHUTTLE method with integer steps offers the advantage of observing the hottest region in the vicinity of the imaging resistors and the peak temperature at the donor-receiver interface for an arbitrarily long time. Predicted temperatures are confirmed by a 180°C peak temperature experimentally observed at the interface of a 6-μm-thick donor with a paper-backed receiver using the thermal coefficient of electrical resistance (TCR) for a 100-μm-wide silver line deposited on that receiver.
Daniel D. Haas, David A. Johnson, "Model and Temperature Measurement of Dye-Diffusion Thermal-Transfer Media Scanning Past a Resistive Printhead" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP22), 2006, pp 281 - 287, https://doi.org/10.2352/ISSN.2169-4451.2006.22.1.art00072_1