| 摘要 |
Liquid-jet printing device comprising a block (15) which is provided with a hollowing (16) which has an outlet opening (28) in its bottom. The block (15) is covered with a flexible film/foil (22) which is loosely arranged on the hollowing (16) and which closes off the hollowing (16) from the environment. Opposite the hollowing (16), a piezoelectric element (26) is attached to the upper side of the film/foil (22). In the upper surface of the block (15) and on either side of the hollowing (16), a duct is formed which is connected to a liquid supply line (17, 20) formed in the block (15). Upon activation of the piezoelectric element (26), the film/foil (22) can be moved between a bent position, in which the film/foil (22) leaves an opening between a ridge which is formed between the duct and the hollowing (16) and the film/foil (22) for the supply of liquid from a supply line (17) to the hollowing (16) via the ducts along virtually the entire length of the hollowing, and an unbent position, in which it closes off the respective hollowing (16) and puts pressure on the liquid in the hollowing (16) which forms a pressure chamber in order to press a drop of liquid through an outlet opening (28) onto receiving material. |
