Image-forming apparatus having charging potential control during non-image forming operation
US12092969B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2023 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Mar 16, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image-forming apparatus, wherein, in a non-image-forming operation, a control unit executes the following control processing: i) not discharging electric charge between the charging member and the image bearing member and applying a first voltage having a first polarity with respect to a potential on the image bearing member to the charging member; ii) after performing the processing of i), applying a second voltage having a polarity opposite to the first polarity with respect to the potential; and iii) after performing the processing of ii), controlling a third voltage having a second polarity with respect to the potential to be applied to the charging member and controlling a fourth voltage having a polarity opposite to the second polarity with respect to the potential to be applied to the charging member, and controlling electric charge to be discharged between the charging member and the image bearing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.