Rotational force transmitting part

  • US 8,532,533 B2
  • Filed: 12/04/2012
  • Issued: 09/10/2013
  • Est. Priority Date: 12/22/2006
  • Status: Active Grant
First Claim
Patent Images

1. An electrophotographic photosensitive drum unit comprising:

  • (a) a cylinder having a photosensitive layer at an outer periphery thereof; and

    (b) a drum flange provided at one end of the cylinder, the drum flange including a plurality of projections provided inside of the drum flange and projected radially inwardly of the drum flange, with a space diametrically between the projections,wherein a radially inner part of each projection has an overhang.

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