Printing ink supply device for ink jet printer
Method and apparatus for recording with writing fluids and drop projection means therefor
Ink jet head
Multi-layer ink jet apparatus Patent #: 4392145
ApplicationNo. 06/414363 filed on 08/27/1982
US Classes:347/71, Layers, plates347/40, Array of ejectors347/47, Nozzles347/85Fluid supply system
ExaminersPrimary: Goldberg, E. A.
Assistant: Reinhart, M.
Attorney, Agent or Firm
International ClassesB41J 2/14 (20060101)
B41J 2/145 (20060101)
B41J 2/15 (20060101)
Foreign Application Priority Data1980-12-30 JP
AbstractAn ink jet printing head which includes a head body provided with an ink filling port (18), a plurality of rows of nozzles (32A1 through 32A5, 40B1 through 40B5) arrayed in a staggered formation, pressure chambers (21A1, 21A2, . . . , 21B1, 21B2, . . . ), one for each of the nozzles, and ink passages (28A1, . . . , 33A1, . . . , 38B1, . . . , 41B1, . . . ) connecting the ink filling port with the nozzles via corresponding pressure chambers. (19A1 through 19A5, 19B1 though 19B5). The pressure chambers are formed inside the head body and adjacent to the surface of at least one side of the head body. Piezoelectric elements are mounted on the outside of the head body at positions corresponding to the pressure chambers.