| 摘要 |
<p>The present invention relates to a photosensitive drum for electrophotographic image formation and a process cartridge comprising the photosensitive drum and, more specifically, to a photosensitive drum for electrophotographic image formation, comprising: a cylindrical member having a photosensitive layer formed around the circumference thereof; and at least two protrusions having a cylindrical shape or a polygonal pillar shape provided on one end portion of the cylindrical member to receive a driving force from the rotatable driving member, wherein a recessed groove which is recessed in a straight line is formed on the center of the protrusions such that when the protrusions are inserted into a distorted opening and the rotatable driving member is rotated, the recessed groove of the protrusions is held and fixed at the entrance of the distorted opening whereby the driving force is transferred. The photosensitive drum for electrophotographic image formation and the process cartridge comprising the photosensitive drum of the present invention can be coupled to a body of an electrophotographic image formation device comprising a distorted opening having a non-circular cross section with a plurality of corners and can minimize damage to components, and can reduce manufacturing costs of dies through the simple structure thereof and extend the replacement period of the dies, and thus the present invention can be differentiated from the existing prior art, and economical efficiency can be obtained.</p> |
