PHOTOSENSITIVE DRUM FOR LASER PRINTER

摘要

A photosensitive drum (101) for a laser printer comprises a photosensitive component (114) and a transmission component (115). The transmission component (115) is fixed on one side of the photosensitive component (114) along the lengthwise direction thereof. One end of the transmission component (115) along the length direction of the photosensitive component (114) that faces away from the photosensitive component (114) is provided with a cylindrical stressed block (117). An external end wall of the stressed block (117) along the axis direction thereof that faces away from the photosensitive component (114) is provided with a blind hole (121) recessed inwardly along the axis direction thereof. The blind hole (121) is provided with a continuous hole wall on an axial cross section of the stressed block (117). The number of blind holes (121) is four. On the axial cross section of the stressed block (117), four blind holes (121) are symmetrically distributed relative to the radial centre of the stressed block (117). The stressed block (117) of the photosensitive drum (101) and a driving head (119) of the laser printer are positioned to be aligned accurately, thus stably acquiring the required rotational driving force from the laser printer.