Printing unit for a web-fed rotary printing press
AssigneeHeidelberger Druckmaschinen AG
InventorJohn Sheridan Richards
Life of this patent
Estimating the term…
Abstract
A newspaper printing press for web fed, offset printing of newspapers, comprising a first plate cylinder; a first blanket cylinder associated with the first plate cylinder; a second plate cylinder; a second blanket cylinder associated with the second plate cylinder and in rolling contact with and mechanically coupled to the first blanket cylinder, each of the first and second blanket cylinders having sleeve-shaped blankets located about their peripheries; a first drive motor for individually driving the first plate cylinder; a second drive motor for individually driving the second plate cylinder; and a third drive motor for driving the first and second blanket cylinders mechanically independently of the first and second drive motors.
Claims29
A newspaper printing press for web fed, offset printing of newspapers, comprising:
- 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, each of said first and second blanket cylinders having sleeve-shaped printing blankets located about their peripheries;
- 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 drive motors.
Newspaper printing press for web-fed offset 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 mechanically driving said first and second blanket cylinders independently of said first and second drive motors, 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.
Method for web-fed offset printing of newspapers, comprising the steps of:
- vertically stacking a plurality of printing units, each of said printing units comprising a first plate cylinder, and first blanket cylinder associated with the 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, each of said first and second blanket cylinders having sleeve-shaped printing blankets located about their peripheries;
- individually driving said first plate cylinder with a first drive motor;
- individually driving said second plate cylinder with a second drive motor;
- driving said first and second blanket cylinders mechanically independently of said first and second drive motors;
- and
- alternately engaging and disengaging said first plate cylinder of a first of said printing units and a first plate cylinder of a second of said printing units with their associated blanket cylinder during an imprinting mode of operation.
Dependencies are inferred from the claim text.