Fuser system with donor roller having a controlled swell release agent surface layer
US6555237B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a release agent donor roller, and methods and fusing systems which incorporate the donor roller, for applying a polymeric release agent to a fuser roller in an electrophotographic apparatus. The donor roller comprises a base member with a polymeric outer layer thereover comprising a silicone material with a controlled, relatively high swelling characteristic in the release agent, i.e., the layer has a swell in 300 cts poly(dimethylsiloxane) oil maintained at a temperature of 175° C. after 24 hours exposure of greater than 15% by weight. When operated in a fusing system, the donor roller exhibits relatively low toner contamination levels, even for relatively low melting polymer binder resins used in producing toners, such as polyester resins. The swell characteristic is still at an acceptable level such that the donor roller has adequate mechanical stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.