Method and apparatus for controlling ion trajectory perturbations in ionographic devices
US4972212A · kind A · utility
12Cited by
11References
27Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 22, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Jun 22, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/323
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an ionographic device projecting a stream of ions towards a moving imaging surface, modulated in imagewise fashion, one or more control electrodes may be arranged adjacent to the path of the ion stream and between the source of the modulated ion stream and the imaging surface, biased with a voltage preventing previously deposited charge from perturbing the trajectory of subsequently projected ions to limit the amount of ion beam deflection caused by the presence of electrostatic charge patterns on the electroreceptor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.