AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTRO-PHOTOGRAPHIC PHOTOCONDUCTOR, ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE
US6919419B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/078
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An aromatic block polycarbonate resin is prepared by polymerizing a diphenol compound of formula (2) or (4), a diol compound of formula (1) or (5), and a halogenated carbonyl compound. The diphenol compound of formula (4) is produced by polymerizing the diphenol compound of formula (2) and a halogenated carbonyl compound by solution or interfacial polymerization. An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon containing the above-mentioned aromatic block polycarbonate resin. An electrophotographic image forming method or apparatus employs the above-mentioned photoconductor. A process cartridge holds therein the photoconductor and at least one of the electrophotographic image forming units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.