Integrated piezo printhead
US9738070B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 28, 2016 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Apr 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/853
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for a piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a plurality of ink ejectors with a nozzle, an ink chamber, at least one body chamber, at least one diaphragm material, and a top electrode. The diaphragm material consists of a foil with built up piezoelectric material. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment disclosed, a thin-film piezoelectric printhead uses existing low-cost adhesive based jet stack fabrication processed with polymers and metal foil layers and avoids the cost and complexity of a Micro-electrical-mechanical (MEMS) based fabrication system. According to another exemplary embodiment of this disclosure, provided is a thick hybrid film piezoelectric printhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.