| 摘要 |
<p>An ink jet droplet generator includes a nozzle plate (1) bonded to a carrier (2). A tuned piezo crystal and metal structure projects into an ink cavity (4) and is mounted on a print head structure (6). The nozzle carrier is separated by a spacer (5) from the print head structure and seals (7) are provided to seal the cavity (4). A pillar (9) is provided with a height slightly greater than that of the spacer (5) between the print head structure and the nozzle carrier. The spacer is isolated from the print head structure, pillar and nozzle carrier by the seals (7) and O-ring which surrounds the pillar. In another aspect, layers of acoustically absorbent material (11) are provided between the spacer (5) and each of the print head structure (6) and nozzle element (2).</p> |
