Patent ID: 6534227
Filing Date: 2003-03-18
Classification: G03G

Abstract:
A photoreceptor comprising a support and a photosensitive layer formed thereon, wherein a power of a wave interface of the photosensitive layer represented by I(S), wherein I(S) determines a surface roughness of said photosensitive layer, is set to be 6.0Ã—10âˆ’3 or greater to control formation of abnormal images when a group of data of N samples of the height x(t) (&mgr;m) of a profile at the interface of said photosensitive layer on the side of said support, measured perpendicular to a horizontal direction of said support, taken at &Dgr;t (&mgr;m) intervals in said horizontal direction, is subjected to Fourier transformation in accordance with formula (1): X&af;(nN&CenterDot;Î”&it;â€ƒ&it;t)=&Sum;m=0N-1&it;â€ƒ&it;x&af;(m&CenterDot;Î”&it;â€ƒ&it;t)&it;exp&af;(-&ii;2&it;â€ƒ&it;Ï€&CenterDot;nN&CenterDot;Î”&it;â€ƒ&it;t&it;m&CenterDot;Î”&it;â€ƒ&it;t)(1)wherein n and m are each an integer, N=2p in which p is an integer, in a power spectrum represented by formula (2): S&af;(nN&CenterDot;Î”&it;â€ƒ&it;t)=1N&CenterDot;&LeftBracketingBar;X&af;(nN&CenterDot;Î”&it;â€ƒ&it;t)&RightBracketingBar;2(2)I(S) represented by formula (3): I&af;(S)=(1N)&it;&Sum;n=0N-1&it;â€ƒ&it;{S&af;(nN&CenterDot;Î”&it;â€ƒ&it;t)}&CenterDot;(3)