Color image forming apparatus
US6118557A · kind A · utility
33Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0177
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a color image forming apparatus, a test pattern is formed by a color toner and provided with multiple tones by a dither method. The toner density of the test pattern is accurately read by a simple structure and faithfully corresponds to the actual toner density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.