Background accenuating image forming apparatus
US4980725A · kind A · utility
18Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Jan 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0849
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When it is desired to provide a particular region of an image of a document with a background which is different in color from the background of the other region, an image forming apparatus controls the amount of toner supply for implementing the background of the particular region to produce a solid image of density which remains constant at all times in the particular region. The amount of toner fed to a developing unit for producing the solid image is controlled in matching relation to the area of a desired solid image region or a ratio of magnification change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.