| 摘要 |
PURPOSE:To prevent the intake of air bubbles involved in an ink during the heating and cooling period by a method in which a local temperature regulator is provided to a head for solid ink-jet printer in such a way as to enable the directions of heating for melting and cooling for solidifying of solid ink to be controlled. CONSTITUTION:Heater plates 13-1-13-3 are divided by sheet electrodes 12, 12-1, 12-2, and 12-3 for heating solid ink for melting and set on the downside of a base plate 1 along the flow path 3 of the ink. The heater plates 13-1-13-3 are connected to a power source 15 by switches 14-1-14-3 in such a way as to enable their temperature to be controlled independently. An ink trap 17 is set on the ink supply side of the head, and ink 18 in solid state at ordinary temperature is heated to a temperature T6 by a heater block 19, a power source 20, and a switch 21 set below the ink trap 17 and kept in a low-viscous state. When the switches 14-1-14-3 are closed and the heater plates 13-1-13-3 are heated, the flow path 3 is heated and melted ink 22 becomes of a low viscosity for completing the preparation of printing. |
