| 摘要 |
PROBLEM TO BE SOLVED: To overcome a conventional defect of an inkjet print head. SOLUTION: This invention relates to the inkjet printer for discharging a practivally solventless ink. The printer comprises a print head. The print head comprises an ink chamber having an ink inlet and an ink outlet, an ink supply reservoir which is in fluid connection with the chamber via the ink inlet, an electromechanical transducer which is in operative connection with the chamber for generating pressure waves in the ink chamber, and a heater for substantially uniformly heating the ink in the chamber. The ink inlet includes a constricting element such that the pressure drop over the constricting element in the direction from the reservoir to the chamber is smaller than the pressure drop over the element in the opposite direction for the same net fluid flow. The ratio of the length of the constricting element and the mean diameter of the element is less than 10. COPYRIGHT: (C)2007,JPO&INPIT
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