Device for continuous electrostatic reproduction of an optical image
US3984842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1975 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | May 27, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for continuously converting an optical image into an electrostatic image. A vacuum tube device has a source of electrons and associated elements for propagating electronic charge toward an array of conductors coupling an interior surface of the vacuum tube device with an exterior surface of the device. The array of conductors has an extent substantially greater in a first dimension as compared to a second dimension. A photosensitive electrode, interposed between the electron source and the array of conductors modulates the passage of electrons from the source to the array. The modulation results from the presence of stored electronic charge on the electrode, the stored charge of local portion of electrode controlling the passage of electrons through apertures associated with the local portion of the electrode. The charge distribution on the photosensitive electrode can be determined by an optical image, applied to the electrode under appropriate conditions. Electron optics, associated with the vacuum tube device, focus electrons passing through the modulating electrode onto the conductor array. By focusing electrons passing through successive selected regions o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.