Image forming apparatus enabling circuit-cycling time of image carrier included in transfer unit to be found accurately
US9300836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2014 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Aug 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes: a transfer unit, a reflectance sensor, a time-series data acquiring unit, and a transfer-unit rotation-time calculating unit. The time-series data acquiring unit is configured to acquire time-series data with respect to the image carrier background-portion reflectance, measured by the reflectance sensor, as reference data over a time period twice longer than a time period that by design the image carrier requires for one cycle, and as advance/delay data over a time period twice longer than a time period longer or shorter in multiples of a predetermined time interval than the by-design time period. The transfer-unit rotation-time calculating unit is configured to calculate a one-cycle-time calculation value that is the time actually required for one cycle of the image carrier, based on the reference data and the advance/delay data acquired by the time-series data acquiring unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.