Image forming apparatus and image forming method
US8526855B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2009 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes: an image carrier; an exposure device; a developing device that develops the latent image on the image carrier by using a toner charged to a predetermined polarity and having an external additive; a transfer device that transfers a toner image developed on the image carrier to a transfer medium; a first charging member that charges the external additive and the transfer residual toner remaining on the image carrier and the image carrier after transfer to the same polarity as a polarity of the toner; a cleaning member that electrostatically attracts the external additive and the transfer residual toner charged by the first charging member; and a second charging member that charges the image carrier to an electric potential smaller in absolute value than an electric potential of the image carrier generated after the image carrier passes the cleaning member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.