Printing unit for a web-fed rotary printing press

Web-fed rotary printing press for printing on a running material web comprising:

• a first blanket-to-blanket printing unit and a second blanket-to-blanket printing unit, each including:
• a first plate cylinder, a first blanket cylinder associated with said first plate cylinder, a second plate cylinder, a second blanket cylinder associated with said second plate cylinder, said second blanket cylinder being in rolling contact with and being mechanically coupled to said first blanket cylinder, a first drive motor for individually driving said first plate cylinder, a second drive motor for individually driving said second plate cylinder and a third drive motor for driving said first and second blanket cylinders mechanically independently of said first and second plate cylinders, wherein said first plate cylinder of said first printing unit and said first plate cylinder of said second printing unit are alternately engaged and disengaged with their associated blanket cylinder.