| 摘要 |
<p>An ink jet print head comprising: a top body portion (16), an intermediate body portion (14) having an upper side and a lower side, a plurality of ink channels (36) being disposed in a common plane along the upper side, each of said channels (36) having at least one orifice (42) for projecting ink towards a substrate, the upper side of the intermediate body portion (14) being located adjacent the top body portion (16); a main body portion (12) located adjacent the lower side of the intermediate body portion (14); and an ink heater (46) made of a PTC thermistor material (48), the ink heater (46) having a substantially planar configuration and being located between the lower side of the intermediate body portion (14) and the main body portion (12), the ink heater (46) extending in a plane parallel to the plane of the channels (36) and adjacent thereto. The ink heater (46) is designed to compensate for certain channels (88) which dissipate heat at a higher rate than other ink channels (86). The ink heater (46) includes electrodes (76, 78) formed on the PCT thermistor material (48) in an arrangement or pattern which compensates for the varying heat dissipation of the ink channels (86, 88).</p> |
