Image forming apparatus
US9841700B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Aug 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an image carrier that holds a developer image, a developer transport unit that transports a developer to the image carrier by performing a rotational movement, a voltage application unit that applies, between the developer transport unit and the image carrier, a voltage, which includes a direct-current (DC) voltage component and an alternating-current (AC) voltage component and which is used for moving the developer from the developer transport unit to the image carrier, and a density correction circuit that detects variations in a distance between the image carrier and the developer transport unit from variations in a waveform of an AC component of the voltage, which is applied by the voltage application unit, and that generates a control signal that causes the DC voltage component to change in such a manner that density variations due to the variations in the distance are corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.