To prevent a decrease in printing quality due to a vibration of a cylinder.

A printing pressure A is applied to an impression cylinder 3 opposed to a rubber cylinder 2. First and second vibration suppressing means 7, 8 are provided at the cylinder 2. In the means 7, a roll 20 rotatable at one end of a lever 15 rotatable around a shaft 16 is brought into pressure contact with a bearer 4 by a belleville spring 30. In the means 8, a roll 44 rotatable at one end of a lever 40 rotatable around a round stay 37 is brought into pressure contact with the bearer 4 by a spring 54. A resultant force D of the pressing pressures B and C of the rolls 20 and 44 is opposite in a direction to the pressure A and has the same magnitude as the pressure A.