| 摘要 |
An ink retained in an ink transfer block is heated by a heating device correspondingly to information to be printed, thereby developing a surface tension gradient and interfacial tension gradient on the ink surface, and a fluidity caused by the surface tension gradient and/or interfacial tension gradient of the ink surface is utilized to have the ink fly from the ink transfer block, thereby printing the information on a print receptor, the heating device having a heating velocity v (in K/s) which meets a requirement (Tb-Ti)/v>h2/D where Tb is a boiling point of the ink in K; Ti is an initial temperature of the ink in K; h is the shortest distance between the surface of the heating means and ink surface in m; and D is a coefficient of thermal diffusion in m2/s.
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