Patent ID: 8288065
Filing Date: 2012-10-16
Classification: G03G

Abstract:
1. An organic photoreceptor comprising a charge generation layer and a charge transport layer provided on a conductive substrate, wherein the substrate has a ten-point surface roughness Rz of the substrate of 0.2 μm or less, the charge generation layer comprises a charge generation material comprising particles of a condensed polycyclic pigment, having an average major axis length of 500 nm or less, an average aspect ratio of 2.5 to 5.0, and an aspect ratio variation coefficient of 16% or less, and quantum efficiency Φ of the photoreceptor is not less than 0.5, the quantum efficiency Φ being defined by a Formula of Φ=ΔQ/(n and e is an elementary electric charge 1.3×10 wherein n is an integer of 1-6.