Elastic body, roller, heating and fixing device, and manufacturing method therefor
US6546223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A roller has an elastic layer formed by curing a silicone rubber material containing at least expanded resin microballons, wherein, when the roller is placed in a vacuum chamber in which atmospheric pressure is reduced to 0.001 MPa or less over 2 minutes, the roller has a gas permeability indicating the recovery characteristic where an increased amount of the thickness of the elastic layer after 10 minutes from the start of evacuation is two-thirds or less of the maximum increased amount of thickness of the elastic layer during a 10 minute period from the start of evacuation. The elastic layer is formed by curing a silicone rubber material containing the expanded resin microballoons and has air void portions formed by breaking the resin microballoons and passages connecting the air void portions therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.