Image forming apparatus and image forming method for adjusting developing bias
US8406645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | May 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Developing bias is set as follows. An electric field intensity between a developing roller and a photoconductor is set to cause normally-charged toner to fly in an image area and not to cause the toner to fly in a background area. Thus, the normally-charged toner does not fly in the background area. The normally-charged toner caused to fly is therefore unlikely to flick low-charged toner and oppositely-charged toner. The low-charged toner and the oppositely-charged toner will not adhere to the background area and cause image fogging. Accordingly, an image forming apparatus can be provided to prevent the low-charged toner and the oppositely-charged toner from adhering to the background area of an electrostatic latent image on the photoconductor and to avoid the occurrence of image fogging in the background area on a printed material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.