Image forming apparatus with varied charge voltages
US6898385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides an image forming apparatus where the useful life of the image carrier does not become significantly short. This system has a charging unit, a charge voltage loading unit, an exposure unit, a development unit, an image transfer unit and a control unit, wherein, when the transport interval of plural recording materials is shorter than a predetermined time the AC charge voltage applied to the image carrier during the transport interval is a first AC charge voltage, and when the transport interval is longer than the predetermined time the AC charge voltage applied to the image carrier during the transport interval being a second AC charge voltage, the control unit makes the current running in the charging unit when the second AC charge voltage is applied lower than the current running in the charging unit when the first AC charge voltage is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.