| 摘要 |
PROBLEM TO BE SOLVED: To prevent the elongation of a printing sheet by spraying the air to the surface of a blanket cylinder to which the ink supplied from a plate cylinder by a water supplying method for supplying moisture to the opposite surface of the plate cylinder and an ink supplying method is adhered, thereby removing unnecessary moisture. SOLUTION: The air 2 is sprayed to the surface of a blanket cylinder 6 to which the ink supplied from a plate cylinder 4 by a water supplying method and an ink supplying method is adhered, and an offset printing is conducted. The air is sprayed by an air sprayer C for spraying the air 2 supplied from an air source 3 to the cylinder 6 adhered with the ink through an air spray nozzle 1. Before it is transferred to a printing sheet, the air 2 is sprayed to the cylinder 6 to remove the unnecessary moisture to make it possible to prevent the elongation of the sheet. The cause of the failure of print registration can be prevented to make it possible to improve the print registering accuracy as compared with a conventional method. |
