| 摘要 |
<p>PURPOSE:To obtain good printing generating no density irregularity by making it possible to always perform transfer by the optimum transfer energy, by estimating the opening ratio of a transfer medium from the recording electric energy within a range performing transfer by one light emission measured by a measuring means and controlling light emission energy corresponding to said opening ratio. CONSTITUTION:A mask sheet 15 is sent in a direction shown by an arrow and superposed on recording paper 16. When a xenon flash lamp 17 is allowed to emit light, light transmits through the part where a metal vapor deposition film 15b is removed of the mask sheet 15 and reflects from the part where the metal vapor deposition film 15b remains and, therefore, heat-meltable ink 15c receives light corresponding to a pattern to generate heat and is melted to he transferred to the recording paper 16. Since the area where the metal vapor deposition film 15b is removed is almost proportional to the current flowing to a recording electrode 11, when the electric energy thereof is measured, the omission area of the metal vapor deposition film 15b, that is, the opening ratio of the mask sheet within a range to be transferred by one light emission of the xenon flash lamp 17 can be known and the optimum light emission energy can be calculated.</p> |
