Semiconductive silicone rubber roller thereof
US5827160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Mar 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0863
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an improvement in a rubber roller as a developing roller in a electrophotographic printer of which the silicone rubber forming the rubber layer on and around a metallic core mandrel is electrically semiconductive. The printing characteristics and abrasion resistance of the rubber roller to ensure good durability of the rubber roller in printing services can be greatly improved by the irradiation treatment of the rubber surface with ultraviolet light having principal wavelengths of 253.7 nm and 184.9 nm in an irradiation dose of 1.2 to 76 J/cm.sup.2, preferably, in an oxygen-containing atmosphere to form an ultraviolet-hardened surface layer of which the rubber surface has a specified surface rough-ness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.