Color development apparatus
US3970042A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 17, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0126
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-color electrostatic printing machine having processing components to produce either a color or black and white copy of an original. Individual development rollers, one for color and one for black and white, are moved into contact with a photoconductor to develop latent electrostatic images thereon for either a color or black and white copy. Toner donor apparatus spaced about the periphery of the color development roller supply the latter with color toner and additional toner donor apparatus supplies the black development roller with black toner. Each developed color image is transferred in superimposed relationship on sheets of paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.