| 摘要 |
A fluid dispenser for use, for example, in an ink jet printing head, comprises a switching device, preferably a bistable fluidic device, which switches fluid under pressure between a path in which the fluid circulates back to the fluid source and a second path in which it issues from a jet. The fluidic device is preferably formed by micro-machining cavities in a silicon substrate, or in two substrates which are then bonded together face to face. A printing head may be formed by locating a number of the dispensers in side-by-side relation with spacers therebetween, the spacers being used to provide feed paths for the ink.
|
