Image forming apparatus
US8175475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2010 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a rotatable image bearer for carrying a toner image, a charger for contacting a surface of the image bearer, a cleaning blade for contacting the image bearer surface to remove toner thereon after toner image transfer onto a transfer material, and a controller for controlling a voltage applied to the charger. The controller applies to the charger a first potential which includes a peak-to-peak voltage larger than a discharge starting voltage in an image forming operation, and applies to the charger a second voltage which includes a peak-to-peak voltage smaller than the discharge starting voltage, for at least one full rotation of the image bearer, after completion of image formation and before an AC voltage component applied to the charger is shut off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.