Image forming apparatus having means to control condition of current supply to discharge wire and grid of charging member
US7254349B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus is provided with an image bearing member, a charging member with a discharge wire and a grid, and a first current supply controlling member, which controls a current supply to the discharge wire. Also provided are a second current supply controlling member, which controls a current supply to the grid, a potential setting member, which sets a potential value on the image bearing member to be charged by the charging member, and a first current supply condition selecting member, which selects a current control condition of the first current supply controlling member or the second current supply controlling member according to the set potential. In addition, a second current supply condition selecting member selects a current control condition for the other current supply controlling member based on the determined current control condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.