Eccentric device for adjusting printing unit cylinders including a cylinder support with a stop face

A device for engaging and disengaging printing unit cylinders in a printing entity of a rotary printing press for printing a web of material, the printing entity including a lower and an upper printing unit, and one of the printing unit cylinders having a stationary mounting support in one of the printing units of the rotary printing press, comprising a cylinder support having a stop face, a first adjusting unit for adjusting a position of printing unit cylinders of the printing entity which are formed as printing form cylinders, and a second and eccentric adjusting unit for adjusting a position of one of two of the printing unit cylinders of the printing entity which are formed as transfer cylinders, said first adjusting unit and said eccentric adjusting unit cooperating so that the printing unit cylinders of each of the lower and the upper printing units, respectively, are in mutual engagement, while said transfer cylinders of the respective lower and upper printing units are disengaged from one another, the one printing unit cylinder having the stationary mounting support being one of the transfer cylinders, the other of the two transfer cylinders being disengageable by said eccentric adjusting unit from the stationarily supported transfer cylinder so as to form a through opening therebetween, said eccentric adjusting unit including an adjusting member, a transmission element, and a control unit, said control unit acting through said transmission element to actuate said adjusting member, said adjusting member acting against said stop face of said cylinder support.