Image forming apparatus and image-density control method
US8233813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Sep 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus forms a plurality of tone patterns of different colors, each of which containing a plurality of toner patches having different toner densities. Some of the toner patches in each of the tone patterns are formed with a predetermined fixed developing bias and the rest of the toner patches in each of the tone patterns are formed with developing biases set based on previous developing biases that have been obtained through a previous control process. The largest toner density of the toner patches in each of the tone patterns is determined based on a magnitude relation of previous index values obtained through the previous control process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.