Method and apparatus for production of color images
US4647182A · kind A · utility
Inventor
Key dates
| Filing date | Apr 3, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Apr 3, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and method for transferring a color image from an original document to a film or to an output paper. The apparatus involves the formation of the component monochromatic images containing selected color component information in a monochromatic toner particle image configuration. The separate images of the toner configurations are exposed onto a photosensitive film to reconstruct the original document. The component images can be formed on a clear material or, preferably, on a transparent colored material, the colored material serving to eliminate the need for a filter for each of the color component exposures needed to reconstruct the original image. In a second embodiment, the component images can be formed on transparent regions of electrostatic photoconducting drum. A suitable light source placed in the middle of the drum, can expose a film on a platten near the surface. Again the transparent photoconducting material of the drum can have a color in each of a plurality of predetermined sections to eliminate the need for filters during reconstruction of an image from component monochromatic images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.