Image forming apparatus with seal member that abuts surface of toner carrier roller having convex and concave sections
US7991319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Oct 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus, a toner carrier roller rotatably mounted to a housing that stores toner rotates to convey toner to an opposed position facing a latent image carrier outside the housing. A plurality of convex sections are regularly arranged on a surface of the roller in an axial direction parallel to the rotational axis and in a circumferential direction orthogonal to the axial direction and parallel to a circumferential surface of the roller and a concave section surrounds the convex sections. A seal member abuts the surface of the roller moving from the outside toward the inside of the housing at a position downstream of the opposed position in a rotation direction of the roller to prevent toner leakage from inside the housing. The roller moves relative to the seal member in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.