Canon Kabushiki Kaisha

Kenji Muranaka

Yoichi Kawamorita

Ryozo Fukuda

Kazuya Tokuda

Shoshin Igarashi

A pre-viewing inspection method and apparatus for inspecting an inspection article prior to visual inspection thereof, the inspection article being an electrophotographic member, such as an electrophotographic photosensitive member. The method (apparatus) comprises a defect signal detecting step (means) of detecting a defect signal based on a defect state of the inspection article, a detailed defect information generating step (means) of generating detailed defect information based on the defect signal detected in the defect signal detecting step, the detailed defect information including defect position information, and a detailed defect information visualizing step (means) of visualizing, on the inspection article, the detailed defect information generated in the detailed defect information generating step. The visualizing step (means) includes a printing step (means) executed with a laser light, wherein the detailed defect information visualizing step visualizes the detailed defect information by printing the detailed defect information on a longitudinal extension of a defect position on the inspection article, based on the defect position information.

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Ibaraki, Japan

Kenji Muranaka