Color recording method
US4521502A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1982 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Dec 16, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0066
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color recording method wherein equal amounts of photoconductive toner particles of three primary colors are uniformly mixed and applied as a layer on a doner member. Optical color images are projected onto this layer, thereby selectively decreasing the resistivities of the toner particles in patterns corresponding to the optical color images. Simultaneously or immediately thereafter there is applied a voltage thereacross, thereby selectively injecting charge into the photoconductive toner particles with decreased electric resistivities to form a charge distribution in the mixed toner layer corresponding to the projected optical color images. Using the charge distribution formed in the mixed toner layer, color recording is then performed by transferring the toner particles to a recording sheet in accordance with the charge distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.