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Title:
ELECTROPHOTOGRAPHIC SENSITIVE BODY, AND IMAGE FORMING DEVICE AND PROCESS CARTRIDGE USING THE SAME
Document Type and Number:
Japanese Patent JP2002244311
Kind Code:
A
Abstract:

To provide an electrophotographic sensitive body where uneven gradation and interference fringe are not caused on a halftone image even when it is an electrophotographic sensitive body produced by a spray coating method by using a conductive supporting body whose surface roughness is small, and an image forming device using the same.

In this electrophotographic sensitive body constituted by laminating at least an under coating layer, a charge generating layer and a charge transporting layer on the conductive supporting body, at least the charge transporting layer is formed by the spray coating method. Then, the electrophotographic sensitive body satisfies a following expression. ΔUL≤2 and (7.ΔTG)-2+(5.ΔCTL)-2≤10-2 where ΔUL means the maximum film thickness difference (μm) of the under coating layer in an effective image area, ΔTG means the maximum transmittance difference (%) of the charge generating layer in the effective image area (the measured wavelength of the transmittance is wavelength where the light absorption of a charge generating agent becomes maximum), ΔCTL means the maximum film thickness difference (μm) of the charge transporting layer in the effective image area. Then, the image forming device and the process cartridge equipped with the electrophotographic sensitive body are provided.


Inventors:
NAKAMORI HIDEO
NOSHO SHINJI
KIMURA MICHIO
KAHATA TOSHIYUKI
SUGINO AKIHIRO
Application Number:
JP2001000043077
Publication Date:
August 30, 2002
Filing Date:
February 20, 2001
Export Citation:
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Assignee:
RICOH KK
International Classes:
G03G21/00; G03G5/047; G03G5/05; G03G5/10; (IPC1-7): G03G5/047; G03G5/05; G03G5/10; G03G21/00
Attorney, Agent or Firm:
小松 秀岳 (外2名)