| 摘要 |
PROBLEM TO BE SOLVED: To obtain a structure for supporting a photoreceptor drum which can restrain vibration in the case of the rotation of the photoreceptor drum, which can perform the faithful printing of an image, and also is excellent in attachable/detachable operability. SOLUTION: A supporting shaft 7 supporting a rotating drum is rotatably supported by a first bearing case 25 supported by a bearing bush 26 slidably in the axial direction. A tightening band 27 is disposed to surround the bush 26, and a cam 29 is provided so as to make flanges 27a and 27b perform tightening operation/releasing operation. The case 25, an engaging pin 25a and an operating pin 29b erected on the cam 29 are operated linked with the slidable moving of a cam link 24 provided on a main body frame 6, the case 25 is slidably moved, and the tightening band 27 performs the tightening operation/ releasing operation. |
