| 摘要 |
<p>PURPOSE:To prevent the deterioration of the the guide performance of a cylinder with low rigidity by providing a placing surface on a half area sectioned by a linear boundary to pass the center of a joining member or in an area smaller than the half area. CONSTITUTION:Cylinder placing surfaces 2f-2h are provided on the half areas or below to be sectioned by boundary lines 6a-6c around through holes 2c-2e. Consequently, when a lower cylinder drum body 1k is clampled to a cylinder placing base 2, it is deformed in arrow directions on respective cylinder placing surfaces 2f-2h, respectively, and it moves in a direction to remedy the deformation of the lower cylinder drum body 1k. Consequently, the deformation of a guide groove 1f in a cylinder 1 single body is remedied. Thus, the deterioration of the tape guide performance of the cylinder with low rigidity can be prevented.</p> |
