Patent application number | Description | Published |
20080282920 | Device for Feeding Printing Plates to a Plate Cylinder and Printing Unit Having the Device - A device for feeding printing plates to a plate cylinder includes a pressure roller for pressing the printing plate against the circumferential surface of the plate cylinder when the printing plate is being mounted. In order to compensate for uneven pressing forces resulting from a bending of the pressure roller, cylindrical segments are provided that have different widths and/or different diameters and/or different distances between the segments. A printing unit of a rotary printing press having the device, is also provided. | 11-20-2008 |
20090101035 | Device for Feeding Printing Plates to a Plate Cylinder of a Printing Press and Sheet-Fed Rotary Printing Press Having the Device - A device for feeding printing plates to a plate cylinder in a printing press includes a pivotable guide element. The pivotable guide element has pivotable guide members which are in contact with an image side of the printing plate when the printing plate is being fed to the plate cylinder. These pivotable guide members are disposed in such a way that they can be disengaged from the printing plate when the printing plate is being wrapped around the plate cylinder. A sheet-fed rotary printing press having the device, is also provided. | 04-23-2009 |
20090145319 | Apparatus for Transporting a Printing Plate to or From a Plate Cylinder of a Printing Press and Printing Unit and Printing Press Having the Apparatus - An apparatus for transporting a printing plate to or from a plate cylinder of a printing press includes a first, driven transport roller that is stationarily disposed and a second transport roller that is disposed so as to be movable in the direction of the first transport roller. The second transport roller is mounted so as to be pivotable about a pivot axis disposed perpendicularly to its axis of rotation, preferably by a ball and socket joint or a fork bearing. | 06-11-2009 |
20090205521 | Method and Apparatus for Coupling and Uncoupling a Plate Cylinder in a Sheetfed Printing Press and Sheetfed Rotary Printing Press Having the Apparatus - A method and an apparatus for coupling or uncoupling a cylinder, in particular a plate or blanket cylinder, to or from a gear train of a printing press or for coupling and uncoupling the cylinder to and from an auxiliary drive, for example for service work or during changeover processes, includes firstly accelerating the auxiliary drive to a predefined rotational speed, then coupling the auxiliary drive to the cylinder and then uncoupling the cylinder from the main drive. A sheetfed rotary printing press having the apparatus is also provided. | 08-20-2009 |
20090241792 | Method and Apparatus for Feeding Printing Plates to a Plate Cylinder of a Processing Machine - In an apparatus for feeding printing plates to a plate cylinder of a printing press, the printing plate is prealigned on stops outside the plate cylinder with a lateral offset and with an oblique skew. Then the printing plate is fed, in the thusly aligned position to the register pins of the plate cylinder, wherein the printing plate is finally aligned by lateral displacement and by a pivoting movement about the first register pin, until the printing plate bears with its receptacles against both register pins. | 10-01-2009 |
20100154664 | METHOD AND APPARATUS FOR AUTOMATICALLY FEEDING PRINTING PLATES AND PRINTING PRESS HAVING THE APPARATUS - A method and an apparatus for automatically feeding printing plates to a rotary printing press include conveying devices spaced apart from each other transversely to a conveying direction for feeding the printing plate to a clamping device having register pins. One of the conveying devices is lifted briefly off the printing plate in the event of a lack of in-register contact while the other conveying device remains in contact with the printing plate and thus ensures a forward drive of the printing plate, while the lifting of one conveying device promotes stress relief in the printing plate. A sheetfed rotary printing press having the apparatus, is also provided. | 06-24-2010 |
20110226146 | METHOD FOR CHANGING PRINTING PLATES IN ROTARY PRINTING PRESSES HAVING A PLURALITY OF PRINTING UNITS, PRINTING PRESS AND CONTROLLER - A method for changing printing plates in rotary printing presses, including a plurality of printing units each having a plate cylinder and a dedicated drive for driving the plate cylinder independently of an associated blanket cylinder in a respective printing unit, includes moving the respective blanket cylinder at a somewhat higher circumferential speed than the associated plate cylinder while conveying one or more printing plates out of the printing unit, at least in one operating mode, during a plate changing operation. A printing press and a controller are also provided. | 09-22-2011 |