Pressure roller
US5782730A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1996 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Jul 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pressure roller is disclosed which comprises: a metal core; an elastic layer formed around the metal core; and a top layer provided over the elastic layer, the top layer having a thickness of not greater than 0.1 mm and being made of a fluororesin, the fluororesin having a coefficient of dynamic friction of 0.25 or more. The pressure roller is capable of forming a high quality image free of image failure and has excellent durability. The fluororesin having a coefficient of dynamic friction as high as 0.25 or more can be obtained by incorporation of a second component having high viscoelasticity into a fluororesin such as PFA, FEP, MFA or EPA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.