Patent application number | Description | Published |
20080223663 | Configuration for Feeding a Lubricant to a Lubrication Point on a Revolving Part of a Printing Technology Machine - A configuration for feeding a lubricant to a lubrication point on a revolving part of a printing technology machine includes a stationary lubricant container and a conveying device for conveying lubricant out of the container to the revolving part. A sealed antifriction bearing on the revolving part has a bearing ring fixed against rotation. At least one lubricant feed duct extends to a bearing chamber for antifriction elements of the antifriction bearing. At least one lubricant duct in the revolving part leads from the antifriction bearing to the lubrication point. | 09-18-2008 |
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 |
20090013889 | Method for Improved Plate Change and Sheet-fed Offset Printing Press Having a Plate Change Apparatus - An apparatus and a method for changing printing plates in sheet-fed rotary printing presses include a plurality of printing units and plate cylinders being coupled to one another mechanically in the printing units during a printing operation. At the beginning of a plate change, the plate cylinders are coupled to one another mechanically and are driven jointly by a main drive motor. After an old printing plate has been conveyed out, each plate cylinder is decoupled from the common mechanical connection and is driven by a separate drive motor. | 01-15-2009 |
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 |
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 |
20090282997 | Method For Engagement Of Cylinders With Different Revolution Rates In Correct Phase And Sheet-Fed Rotary Printing Press Having The Cylinders - An apparatus and a method for correct phase engagement of mechanically coupled rotatably drivable components in printing material processing machines, include a coupling for mechanically connecting at least two of the rotatably drivable components. The at least two rotatably drivable components are operated at a different rotational speed in a transmission ratio in a mechanically coupled state, and a control computer has access to the transmission ratio for controlling an engagement operation and taking the transmission ratio into consideration during the correct phase engagement. | 11-19-2009 |
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 |
20130032052 | METHOD OF CONTROLLING INKING UNITS IN CASE OF PRINTING SPEED CHANGES - A method controls a printing speed and a temperature of a printing press to attain a predetermined actuating variable. The printing press includes a control computer. The method is characterized by calculating a target temperature to attain the predetermined actuating variable at a desired printing speed and initiating the adjustment operations to attain the target temperature by the control computer. The actual printing speed is changed via a first acceleration within a tolerance limit with respect to fluctuations about the predetermined actuating variable. The first acceleration process is stopped if the desired printing speed is attained in the process. The first acceleration is changed if the tolerance limits are reached and the desired printing speed has not been attained yet. The printing speed is ran at a modified second acceleration along the tolerance limits until the desired printing speed is attained. | 02-07-2013 |
20130120775 | COLOR MONITORING METHOD FOR PRINTING PRESSES - A method of signaling or indicating a coloration condition upon a change of an operating condition in a printing press having a control unit, includes the steps of specifying a target ink density for a print job, storing the specified target ink density in the control unit, calculating an actual ink density using the control unit based on an actual operating condition of the printing press, comparing the actual ink density to the target ink density in the control unit, and emitting a first signal using the control unit when the actual ink density is within a range of tolerance about the target ink density stored in the control unit. | 05-16-2013 |