Polymeric piezoelectric drive element for writing jets in mosaic ink printing devices
US4379246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1980 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | May 9, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/80
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A piezoelectric drive element which surrounds an ink channel in a writing jet in a mosaic printing device is a winding formed by plies of thin synthetic foil having piezoelectric properties. The plies of the foil contact adjacent plies over large areas of adjacent plies and form a compression chamber in the interior of the winding which surrounds the ink chamber. Application of a voltage of a first polarity to the winding expands the winding and application of a voltage having an opposite polarity then contracts the winding forcing ink out of the chamber for printing. The winding and chamber may be surrounded by a covering of silicon rubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.