| 摘要 |
To provide a flange to be attached to an end of a photoconductor drum, the flange including: a drum engagement part capable of being engaged with an inner surface of the photoconductor drum; and a center hole, wherein the flange is prepared by cutting at least one of a surface of the engagement part and an inner surface of the center hole so that the axis of the center hole coincides with the axis of the photoconductor drum.
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