| 摘要 |
PURPOSE:To expose the surface of a photosensitive drum in arbitrary constant conditions when the electrifying properties of the photosensitive drum is inspected. CONSTITUTION:Light beams emitted by a halogen lamp 30 are divided by four optical fiber bundle 41a-44a of an incident side optical transmission body 40a. In light beams outgoing from respective optical fiber bundle 41a-44a, only the light beams having different prescribed wavelength areas are transmitted by band pass filters 61-64, respectively, and the light quantities of respective wavelength areas are adjusted by respective ND filters 71-74. The photosensitive drum 10 is irradiated with the light beams of respective wavelength areas in a state where they pass respective optical fiber bundle 41b-44b of an outgoing side optical transmission body 40b to be synthesized. |
