Multicolor electrophotography apparatus
US4939547A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1988 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Apr 15, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0126
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multicolor electrophotography apparatus for forming a color image on a rotatable photosensitive device shaped cylindrically and arranged to hold on its circumferential surface an electrostatic image optically formed by an exposing device. The apparatus includes a plurality of developing devices movably provided along the circumference of the photosensitive device for developing a plurality of different-color toner images overlapping each other. Each of the developing devices is selectively driven to take a developing position and a non-developing position, each of the developing devices being closed to photosensitive devices up to the developing position and being separated therefrom up to the non-developing position. When the exposing device is in the non-operated state, at least one of the developing devices takes the developing position and the other developing devices take the non-developing positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.