| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet-fed offset printer capable of regulating in the printer without finely dimensional regulation on a plate material. SOLUTION: The sheet-fed offset printer of the type comprises a plurality of printing units each having a plate cylinder, a blanket cylinder and an impression cylinder, and a transfer cylinder for conveying a printing sheet between the units. In this printer, a diameter of each of the printing units when the plate of the plate cylinder is mounted in each unit is sequentially reduced in the moving direction of the printing sheet. In addition, a diameter of the unit when the blanket of the cylinder is mounted is sequentially increased in the moving direction of the sheet. The transfer sheet is used at the impression cylinder of an opposite side. |
