Patent ID: 7838191
Filing Date: 2010-11-23
Classification: G03G

Abstract:
1. An electrophotographic photoconductor which has a monolayer type photoconductive layer including at least a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin on a substrate, wherein the charge generating agent contains a first titanyl phthalocyanine crystal, the electron transfer agent has a reduction potential thereof set to a value which falls within a range from −0.97 to −0.83 V, and the reflection absorbance A(−) of the photoconductive layer with respect to light having a wavelength of 700 nm, a film thickness d(m) of the photoconductive layer, and the concentration C(weight %) of the first titanyl phthalocyanine crystal of the photoconductive layer (100 weight %) satisfy a following formula (1): wherein the charge generating agent contains the first titanyl phthalocyanine crystal which possesses following properties (a) and (b) or either: (a) in the differential scanning calorimetry analysis, the first titanyl phthalocyanine crystal does not have peaks within a range from 50° C. to 400° C. except for peaks attributed to the vaporization of absorption water, (b) in the differential scanning calorimetry analysis, the first titanyl phthalocyanine crystal does not have peaks within a range from 50° C. to 200° C. except for peaks attributed to vaporization of absorption water and has one peak within a range from 270° C. to 400° C.; and wherein the charge generating agent further contains a second titanyl phthalocyanine crystal other than the first titanyl phthalocyanine crystal having properties (a) or (b).