Patent ID: 7662529
Filing Date: 2010-02-16
Classification: G03G

Abstract:
1. An electrophotographic photoconductor that is a functionally separated type electrophotographic photoconductor, comprising: a conductive substrate; a charge generation layer containing a charge generation agent in crystalline form; and a charge transport layer containing a charge transport agent, wherein the charge generation layer and the charge transport layer are sequentially laminated on the conductive substrate, and wherein the electrophotographic photoconductor has an intensity ratio of less than 0.30, which correlates with little or no charge generation agent in an amorphous state so that the electrophotographic photoconductor is substantially free of ghost phenomenon and potential change before and after continuous printing, the intensity ratio being a ratio of the maximum intensity of a halo pattern to a peak intensity of a maximum diffraction peak in an X-ray diffraction pattern obtained by a powder method using Cu Kα line of a test coating film produced from a test coating liquid that is prepared by adding the charge transport agent into a coating liquid for the charge generation layer in an equal mass of the charge transport agent to a mass of the charge generation agent.