Image forming apparatus
US7046938B2 · kind B2 · utility
8Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Apr 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0129
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.