Semiconductive rubber composition, charging member, electrophotographic apparatus, and process cartridge
US6697587B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Feb 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductive rubber composition is provided having superior electrical properties, such as superior uniformity, small voltage dependence, small environmental dependence, and stability with time. In addition, the semiconductive rubber composition can be used for forming a charging member which suppresses contamination of a member to be charged, such as a photosensitive member. In the semiconductive rubber composition, a dispersed domain structure is formed having a polymeric continuous phase composed of an ion conductive rubber material primarily containing a raw rubber A having an intrinsic volume resistivity of 1×1012 &OHgr;·cm or less and a polymeric dispersed phase composed of an electron conductive rubber material and conductive particles mixed therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.