Fabrication of integrated acoustic ink printhead with liquid level control and device thereof
US5111220A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14008
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating an acoustic ink printhead with an integrated liquid level control layer is presented. With standard photolithographic techniques, acoustic lenses and ink supply channels are defined in a substrate. Apertures are created in a spacer layer plate to define cavities to hold the ink reservoirs for each ejector. Corresponding alignment holes also made in the substrate and in the spacer layer plate. With spheres matching the size of the alignment holes, the spheres engage the alignment holes to precisely align the apertures in the spacer layer plate with the acoustic lenses in the substrate. The plate and substrate are then bonded for an integrated acoustic printhead with liquid level control by capillary action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.