Image forming apparatus having a separate black developer stored for a color image
US5160969A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0126
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus has a plurality of developing containers for developing an electrostatic latent image of a latent image carrier by toners having colors different from each other except for black; a black developing container for color for storing black toner for color and operated when the developed image on the latent image carrier every color is overlapped and transferred onto a transfer material to provide a color image; a black developing container for a monochromatic image for storing black toner for a monochromatic image and operated when the monochromatic image is obtained; and a device for arranging the respective developing containers such that the developing containers are opposite to the latent image carrier. The other image forming apparatuses are also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.