Electrophotographic apparatus and electrophotographic photosensitive member
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United States of America Patent
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Jul 8, 2014
Grant Date -
Nov 24, 2011
app pub date -
May 13, 2011
filing date -
May 18, 2010
priority date (Note) -
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Abstract
An electrophotographic apparatus and an electrophotographic photosensitive member for use in the electrophotographic apparatus are provided. The number of intermediate layers between a photoconductive layer and a surface layer is an odd number more than 2, and the refractive index monotonically decreases from the photoconductive layer toward the surface layer. The refractive index of an odd-numbered intermediate layer is in a predetermined range of the geometrical mean of the refractive indices of the two layers adjacent to the odd-numbered intermediate layer, and the product of the refractive index and the thickness is in a specific range of an odd multiple of λ/4n. The sum of the products of the refractive indices and the thicknesses of one or more intermediate layers disposed between at least two odd-numbered intermediate layers is in a range of −π/2<θ<π/2 in the terms of phases.
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