| 摘要 |
PURPOSE:To form a cylinder for a screen photosensitive body, etc. with high accuracy by winding a sheet-like member on a mold core by using a pressing roller of which the diameter is increased from the center toward both ends. CONSTITUTION:A pressing roller 8 is so formed as to have the diameter increasing gradually from the center toward both ends to make the curve 8b thereof parabolic in forming a cylinder for a screen photosensitive body, etc. Such roller 8 is placed on a mold core connecting part 6 and a mold core 7 is rotated. The roll 8 acts to pull the thin sheet of a screen photosensitive body 1 to both sides thus winding the sheet 1 on the mold core 7. The less shiff sheet is thus wound on the cylinder with good accuracy without wrinkling and deflecting. |
