Electrostatic imaging apparatus
US4038916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1975 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Nov 10, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/321
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for forming solid character charge patterns on a dielectric surface in a non-impact printing system. The apparatus comprises a corona source of ions and a rotatable stencil drum surrounding the corona source to shape the ions generated by the corona source and accelerated therefrom by electrostatic forces into solid patterns of charge. A coaxial stationary shield is provided surrounding the stencil drum to capture the solid patterns of charge. A series of grid covered openings are longitudinally disposed along the shield to form a print station. Means are provided to electrically bias the individual grids covering the openings in the shield at a potential which either blocks the passage or enhances the transmission of patterns of charge through the shield onto an adjacent dielectric surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.