Image forming apparatus with current control
US6539184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Apr 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an image bearing member and a charge member contacted to the image bearing member for electrically charging the image bearing member. An oscillating voltage including an AC voltage component is applied to the charge member. A first detector detects an AC current applied to the charge member and a second detector detects the AC current corresponding to a peak or a neighborhood of the peak of the AC voltage. A controller effects control such that current detected by the second detector is a predetermined level when the current detected by the first detector is within a predetermined range, and such that current detected by the first detector is a predetermined level when the current detected by the first detector is outside the predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.