Image forming apparatus and image forming method
US8712267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Sep 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/1675
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an image carrier to carry a toner image, a transfer member to form a transfer nip by contacting the image carrier surface, and a power supply to output a voltage to the recording material captured in the transfer nip so as to transfer the toner image formed on the image carrier surface. The voltage is switching alternately between a voltage in the transfer direction and a voltage opposite to the voltage in the transfer direction, and a time average value (Vave) of the voltage is set to have a polarity of the transfer direction, and is set to a value in the transfer voltage side, and a change mode to change a cycle of the voltage output from the power supply can be changed based on the toner deterioration information which determines the deterioration status of the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.