Apparatus for acoustically synchronizing drop formation in an ink jet array
US4074277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Nov 3, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ink jet synchronization scheme, wherein the drop formation of respective streams in an ink jet array are synchronized acoustically by individual acoustic fiber inputs to each of the streams. The acoustic fibers are attached to grooves adjacent each of the nozzles, with acoustic isolation being provided between the fiber and the nozzle substrate to prevent direct excitation of the substrate. This prevents the occurrence of resonance within the nozzle plate. Alternatively, acoustic isolation is achieved by mounting the synchronization structure separate from the nozzle plate. For example, the acoustic fibers are attached to the charge electrode structure, or are attached to a support structure intermediate the nozzle plate and the charge electrode structure. The acoustic energy inputs to the fibers are independently controlled as is required for certain printing schemes or are made identical as is normally the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.