Image forming apparatus
US6628905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1652
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object of the present invention is to provide an image forming apparatus that has an image bearing member voltage applying device for applying a voltage having a polarity reverse to that of the toner to the conductive portion of the image bearing member, a charging voltage applying device for applying a voltage to the charging device, a developing voltage applying device for applying a voltage to the developing device, and a transfer voltage applying device for applying only a voltage having a polarity reverse to that of the toner to the transfer device, wherein, the apparatus has a cleaning mode in which, when an image forming is not effected, the voltage is applied to the image bearing member by the image bearing member voltage applying device and the voltage applied to the transfer device from the transfer voltage applying device is turned off or made lower than the voltage applied at the image forming time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.