| 摘要 |
A heater assembly suitable for heating ink of an ink jet printing system, comprising a heat exchanger unit and a heating elements, the heat exchanger 15 has channels on one surface that are sealed by a cover plate 18, through which the inks flow, and on the opposing surface of the heat exchanger the heater element 13 is attached, such that heat from the heating element is transferred to the ink via the heat exchanger. Preferably the heat exchanger is made from stainless steel, aluminium, brass, copper or thermally conductive polymer. The heating elements are preferable positive temperature coefficient heating elements such as heating wires embedded in aluminium plates or chips. The heat exchanger channels and the heating element may be covered by thermally insulating covers 14, 17. The removal of the cover plate 18 and insulating cover 17, allows the ink channels to be easily cleaned. Alternatively the heat exchanger has a cooling elements (23, Fig 6) attached, such as a peltier element (28, fig 6), heat sink (27, fig 6), fan (24, fig 6), to cool the ink. |
