Color copier
US4746950A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Jan 8, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color copier scans an original carrying a multi-color image in one direction to form toner images of different color components thereof on respective photosensitive drums while moving a transfer sheet in the opposite direction to transfer in registration thereon the several toner images and thereby form a composite color image of the original without reversing the rotational direction of the drums. After the latent image on a given drum is developed with a toner of a respective color, the drum is quenched to remove residual charge by irradiating it with light of a color which is not significantly absorbed by the toner on the drum. The quenching light color differs as between different drums, and for a given drum the quenching light color differs from the color of the light used to form the latent image on that drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.