| 摘要 |
A charging device has a stainless steel sheet electrode for charging an image bearing member, and a cleaner for cleaning the stainless steel sheet electrode. The stainless steel sheet electrode has a thickness within a range from 50 μm to 60 μm and comprises aligned triangular pins. Each of the triangular pins has a vertex angle within a range from 10 degrees to 30 degrees. The cleaner has two grinding members comprising abrasive grains having an average diameter within a range from 2 μm to 9 μm, and the two grinding members are in contact with, respectively, both main surfaces of the sheet electrode. The cleaner and the sheet electrode are moved relative to each other at a constant speed by a force equal to or less than 2N.
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