| 摘要 |
<p>PURPOSE:To prevent danger in mounting and dismounting the title tube by providing a fixing mechanism having 2 couples of cams for controlling movement of a cathode ray tube on a rotatable clamp shaft as regards fixing mechanisms of optical fiber tubes, thin window recording tubes, etc.. CONSTITUTION:Main body 21 of a cathode ray tube is contained in a protective case 22 for shielding an exterior magnetic field in a state of recording face a alone disclosed. Case 22 is controlled in distance G from photosensitive drum 1 by changing the position with respect to fixing stand 20 with a couple of adjusting screws 23. Part of the weight of cathode ray tube Z is srpported by actions of bracket 26 and spring 29 on the bottom face of case 22, and they protect tube Z from impact force action. Stopping face 35 and leg pieces 30 are provided on the lower side of case 22. First cams 34 of clamp shaft 32 stop face 35 and release stopping of them on rotation of shaft 32. Second cams clamp pieces 30, thus permitting fixing without danger.</p> |
