Droplet deposition apparatus
US4845517A · kind A · utility
7Cited by
5References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet"drop-on-demand" printer has a number of parallel channels each containing ink. A thread of mercury extends longitudinally of each channel or pair of channels and is connected for electrical current flow. A magnetic field is applied orthogonally to the channel plane such that current flow in a selected channel causes electromagnetic deformation of the mercury thread. This leads to a pressure pulse in the ink causing ejection of an ink droplet. With a mercury thread shared between a pair of channels, current in the opposite sense results in droplet ejection from the opposite channel of the pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.