| 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 the protrusions are inserted into a distorted opening to transfer driving force by holding and fixing side surfaces of the protrusions at the entrance of the distorted opening when the rotatable driving member rotates, and are formed from a synthetic resin having the physical properties of 0.8-0.99 times of tensile strength, 0.8-0.99 times of yield elongation, 1.01-1.2 times of flexural modulus and 0.7-0.99 times of impact strength when compared with a material forming the distorted opening. The photosensitive drum for electrophotographic image formation and the process cartridge comprising the photosensitive drum, according to the present invention, can be coupled to a main 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 molds and extend the replacement period of the molds through the simple structure thereof, and thus the present invention can be differentiated from the existing prior art, and economical efficiency can be obtained.</p> |
