Image forming apparatus including fixer having fixing roller and methods of manufacturing the same
US7486924B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2007 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jul 12, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing roller and method of manufacturing the same. The fixing roller includes a fixing sleeve configured to fuse and fix a toner image on a recording medium and a fixing assist roller configured to be inserted into the fixing sleeve. The fixing sleeve includes a first heating layer having a Curie point. The first heating layer is configured to be heated with a magnetic flux. The fixing assist roller includes an elastic insulating layer and a first low-resistivity layer. The elastic insulating layer is formed on an outer circumference of the fixing assist roller. The first low-resistivity layer is formed under the elastic insulating layer and has a volume resistivity not greater than 5.0×10−8 Ωm. Convexities and concavities are alternately formed on an outer surface of the elastic insulating layer along a circumferential direction thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.