Image forming apparatus, image forming method, and image forming system
US7751760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2007 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0806
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a developer bearing member for transporting developer to an opposing position opposing an image bearing member. Regularly-disposed concave sections are formed on a surface of the developer bearing member. An alternating voltage that includes a first voltage for moving developer from the developer bearing member toward the image bearing member, and a second voltage for moving developer from the image bearing member toward the developer bearing member is applied to the developer bearing member. A cycle period of the alternating voltage is larger than a minimum width of the concave section in a circumferential direction of the developer bearing member divided by a moving velocity of a surface of the rotating developer bearing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.