Single toner color image display apparatus and method
US4809040A · kind A · utility
Inventors
Key dates
| Filing date | Apr 30, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Apr 30, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/372
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for displaying graphic or pictorial intelligence, including half tones and the like. The system includes an endless belt having an electrically insulating externally facing surface; an electrostatic charge writing head for depositing an electrostatic charge pattern on said belt in correspondence to a desired image to be formed thereupon; a developing station for depositing toner upon said electrostatic image to render same visible; means to move said belt past said imaging and development stations and to a viewing position whereat said display may be seen by a user; and a casing enclosing said belt, writing head, and developing station, one side of the casing being provided with a transparent wall to enable the developed image to be perceived by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.