Acoustic lens arrays for ink printing
US4751530A · kind A · utility
66Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1986 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Dec 19, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14322
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
To facilitate the fabrication of acoustic printheads, arrays of spherical acoustic lenses are provided for bringing rf acoustic waves to essentially diffraction limited focii at or near the free surface of a pool of ink. These lenses produce focal patterns which are relatively free of localized amplitude variations, so they may be employed to fabricate acoustic printheads having relatively stable characteristics for acoustic printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.