| 摘要 |
PURPOSE: To manufacture a cylindrical substrate of high accuracy in roundness, straightness, eccentricity and the like by adjusting a polymerizable liquid material to a specified viscosity, injecting the same into a cylindrical mold, applying the rotation and heat, polymerizing and then annealing, and then cooling and releasing from the mold. CONSTITUTION: In case of manufacturing a cylindrical substrate of high accuracy such as a photosensitive drum or the like as a static charge image forming body of an image forming device, a cylindrical mold C1 having a ground cylindrical inner face of high accuracy is provided, and both ends of the mold C1 are retained in the liquid-tight state by a mold retaining component C3. The internal temperature of the mold C1 is measured by a thermometer C5, and a heating component C2 is controlled based on the measurement result, and in the state of adjusting properly the temperature of the mold C1, a polymerizable liquid material having the viscosity adjusted in the range of 10cp or over to 40 cp or under is injected from an injection opening C4. Then, molding is carried out by rotating the C1 at a high speed, and subsequently the material is annealed, cooled and released to manufacture a required cylindrical substrate. |
