Fixing device
US7218884B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Aug 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device has a fixing roller including an inside roller, an outside roller and a regulation member. The regulation member is disposed outside of both ends of the outside roller in the axial direction to regulate axial movement of the outside roller. An axial length of the contact face, where the pressure roller contacts with the outside roller, is smaller than an axial length of the outside roller. Thereby, both ends of the outside roller hardly receive bending deformation caused by pressure of the pressure roller. This makes it possible to reduce stress exerted to both ends of the outside roller, and therefore, the ends of the fixing roller are prevented from being damaged to enhance durability of the fixing roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.