Image forming apparatus
US7965954B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Jul 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control unit controls a device that executes an image forming process, compares changes of each toner adhesion amount in an image-density-detection pattern image when a developing-bias control condition is changed, with respect to a toner adhesion amount in an image-density-detection pattern image in a normal status, performs a malfunction-occurrence prediction process according to the degree of each change of the densities, and displays the result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.