Electron DC printer
US5166709A · kind A · utility
11Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/323
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A DC operated printhead emits electrons by field emission at each crossing of first and second electrodes. Plural small electrode sets consisting of a cathode emitting cone and an anode aperture form a gap which less than the electron mean free path in an ambient atmosphere, and the sets are preferably closely spaced to form a substantially collimated beam. A third electrode preferably accelerates and cleans up the beam. Different gases may be used to increase emission or transport efficiency, and enhance electrode lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.