Electrophotographic photoconductor and electrophotographic image forming apparatus using the photoconductor
US6136483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0696
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic photoconductor including an electroconductive substrate, and a charge generating layer including a charge generating material and a charge transporting layer including a charge transporting material, which are overlaid and which are formed overlying one side of the electroconductive substrate, wherein the charge generating material includes an asymmetric disazo pigment and a metal-free phthalocyanine pigment, and wherein a ratio of the asymmetric disazo pigment to the metal-free phthalocyanine pigment is from 1.5:1 to 5:1 by weight and the asymmetric disazo pigment has the following formula (I): EQU Cp1--N.dbd.N--A--N.dbd.N--Cp2 (I) wherein A represents a divalent group which is connected to each nitrogen atom of the adjacent azo groups through a carbon atom of said A group; and Cp1 and Cp2 independently represents a residual group of a coupler, wherein Cp1 is different from Cp2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.