| 摘要 |
<p>A device for generating fluid drops, preferably in a demand controlled ink jet printer has a rod (3) of magneto-strictive material surrounded by a magnetisation coil (4). One end (3a) of the rod is fixedly secured to a stationary portion (1a) of the device. The second, free end (3b) extends via a fluid-sealing lead-through (5) into a fluid chamber (6) in the device to a position in the vicinity area of the outlet opening (8) of said fluid chamber. When actuating the magnetisation coil by feeding an actuation current thereto, the magneto-strictive rod generates an ultrasonic pressure wave in the fluid at the outlet opening of the fluid chamber (6), which in turn causes an ejection of a fluid drop from said outled opening (8).</p> |
