Control of halftone and solid area image quality by way of a halftone discharge ratio
US6321043A · kind A · utility
3Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Dec 12, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00054
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an electrostatic and development control in a printing apparatus, unwanted variation in dot size and shape may be stabilized and the DMA variability under halftone control may be decreased, by use of a novel halftone discharge ratio (HTDR.sub.midtone) along with the conventional actuators of development potential, cleaning potential, and exposure level. A three-input, three-output MIMO control system may be constructed to deliver superior regulation of halftone and solid area image quality with use of control algorithms that are based on the halftone discharge ratio and with use of as few as two developed halftone test patches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.