Charging device, image forming apparatus and method of charging image carrier of image forming apparatus
US8019249B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2008 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jan 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging device includes a first charging member held in contact with an image carrier, a toner image formed thereon, a bias showing a polarity same as that of the charged potential of toner applied thereto, a second charging member arranged downstream relative to the first charging member as viewed in the moving direction of the image carrier and held in contact with the image carrier, a bias showing a polarity opposite to the charged potential of toner applied thereto, a collection member held in contact with the second charging member to collect the toner adhering to the second charging member, a bias being applied thereto and a collection member bias control unit for controlling the bias applied to the collection member according to image forming conditions information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.