| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously enable the replacement of a form plate and the cleaning of an impression cylinder, etc., by arranging a change-over clutch which can be operated remotely and the driving apparatus corresponding to each form cylinder and making the form cylinder drivable in relation to the switching state of the clutch irrespective of the movement of the form cylinder and other cylinders or drums. SOLUTION: In an offset printing machine equipped with four printing units 2 (2.1-2.4), a feeder 1, and a delivery 3, rollers for ink arrangement/dampening apparatuses F (F.1-F.4) are arranged in response to from cylinders P (P1-P4) in each printing unit 2. In order to drive the form cylinders P in each printing unit 2, rubber blanket cylinders G (G1-G4) and an impression cylinder G, a transfer cylinder T, a feeding cylinder Z, etc., a motor M of a main driving apparatus HA is connected through a gear train. On this occasion, change-over clutches K1-K4 are arranged in a gear train between the form cylinder and the rubber blanket cylinder G to make it possible to separate the form cylinders from the movement of other cylinders and drums. |
