Continuous stream binary array ink jet print head
US7033003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2001 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | May 14, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/105
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A continuous stream binary array ink jet print head includes an elongate cavity for containing ink and an array of nozzle orifices formed so as to extend through a wall of the cavity for passing the ink from the cavity to form jets. The nozzle orifices extend along the length of the cavity. The cavity is divided up along its length by at least one internal wall thereby to create a plurality of sub-cavities substantially acoustically isolated from one another and to divide up the array of nozzle orifices between the sub-cavities such that each sub-cavity communicates with one or more of the nozzle orifices of the array. One or more actuators associated with each sub-cavity cyclically varies the dimensions of the sub-cavity thereby to cause the or each jet emanating from the nozzle orifice(s) of that sub-cavity to break up into ink droplets at a predetermined distance therefrom. The droplets of each jet are selectively electrically charged and deflected. A gutter is provided for collecting droplets not used in printing. The droplets of each jet used in printing travel along the same path to print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.