Patents by Inventor Alexander Knabe
Alexander Knabe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10569583Abstract: A method for the automated calibration of a printing machine with an image capture system by using a computer, includes putting at least one printed sample substrate with defined deviations into the printing machine, generating a digital image of the printed sample substrate by using the image capture system, calculating current compensation values including defined deviations for configuration parameters of the printing machine relating to optimizing the printing quality by using the computer, and comparing the current compensation values created with target compensation values known from the defined deviations of the printed sample substrate. Serviceability of the printing machine is checked by evaluating the comparison by the computer and/or calibrating the printing machine by using the evaluated comparison by the computer.Type: GrantFiled: December 6, 2018Date of Patent: February 25, 2020Assignee: Heidelberger Druckmaschinen AGInventors: Alexander Knabe, Manfred Schneider
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Publication number: 20190184722Abstract: A method for the automated calibration of a printing machine with an image capture system by using a computer, includes putting at least one printed sample substrate with defined deviations into the printing machine, generating a digital image of the printed sample substrate by using the image capture system, calculating current compensation values including defined deviations for configuration parameters of the printing machine relating to optimizing the printing quality by using the computer, and comparing the current compensation values created with target compensation values known from the defined deviations of the printed sample substrate. Serviceability of the printing machine is checked by evaluating the comparison by the computer and/or calibrating the printing machine by using the evaluated comparison by the computer.Type: ApplicationFiled: December 6, 2018Publication date: June 20, 2019Inventors: ALEXANDER KNABE, MANFRED SCHNEIDER
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Patent number: 9815307Abstract: A method for avoiding collisions in a digital inkjet printing machine, a method and a device for actuator-based lifting movement of inkjet heads. A sensor/camera monitors the sheets as they travel towards the inkjet heads. In order to avoid collisions, the inkjet heads are raised and lowered again individually and in an oscillation-optimized manner when a defective sheet is detected. The machine does not need to be stopped in the event of defective sheets. Advantageously, rejects can thus be reduced and the performance of the machine can be exploited better.Type: GrantFiled: May 27, 2016Date of Patent: November 14, 2017Assignee: Heidelberger Druckmaschinen AGInventors: Andreas Mueller, Jochen Renner, Matthias Zapf, Ralf Steinmetz, Michael Oestreicher, Burkhard Wolf, Manfred Haeussler, David Ehrbar, Alexander Knabe
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Patent number: 9815296Abstract: A method for controlling the temperature of a sheet in a printing machine includes measuring initial temperatures in zones on the sheet. Segments of an emitter are actuated in different ways as a function of the measured initial temperatures for irradiating cooler zones to a greater extent and warmer zones to a lesser extent or not at all. A common final temperature or at least a homogenization of the temperature is therefore achieved in the zones.Type: GrantFiled: September 29, 2016Date of Patent: November 14, 2017Assignee: Heidelberger Druckmaschinen AGInventors: Andreas Mueller, Alexander Knabe, Rolf Mueller, Kai Oskar Mueller, Peter Hachmann, Michael Gieser, Wolfgang Dolz, Thomas Schmidt
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Patent number: 9738472Abstract: A sheet-transporting drum includes sheet-supporting areas each being formed of a first comb segment and a second comb segment having segment teeth. At least one of the comb segments is rotatable for adaptation to a sheet format. A mechanical leading-edge gripper is provided on the first comb segment and a pneumatic trailing-edge gripper is provided on the second comb segment. A mechanical trailing-edge gripper is additionally disposed on the second comb segment and is deactivatable in particular by format adjustments. This advantageously allows either the trailing edge of a sheet to be securely held down mechanically or a full-bleed print to be applied to the sheet when the trailing edge of the sheet is held down pneumatically. A sheet-fed printing machine is also provided.Type: GrantFiled: April 21, 2016Date of Patent: August 22, 2017Assignee: Heidelberger Druckmaschinen AGInventors: Juergen Rothaug, Arno Juenger, Albert Maul, Sven Goll, Thomas Schmidt, Alexander Knabe, Daniel Conzelmann, Wolfgang Dolz, Kai Oskar Mueller, Raimund Schroeder
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Publication number: 20170136794Abstract: A method for controlling the temperature of a sheet in a printing machine includes measuring initial temperatures in zones on the sheet. Segments of an emitter are actuated in different ways as a function of the measured initial temperatures for irradiating cooler zones to a greater extent and warmer zones to a lesser extent or not at all. A common final temperature or at least a homogenization of the temperature is therefore achieved in the zones.Type: ApplicationFiled: September 29, 2016Publication date: May 18, 2017Inventors: ANDREAS MUELLER, ALEXANDER KNABE, ROLF MUELLER, KAI OSKAR MUELLER, PETER HACHMANN, MICHAEL GIESER, WOLFGANG DOLZ, THOMAS SCHMIDT
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Publication number: 20170072722Abstract: A method for avoiding collisions in a digital inkjet printing machine, a method and a device for actuator-based lifting movement of inkjet heads. A sensor/camera monitors the sheets as they travel towards the inkjet heads. In order to avoid collisions, the inkjet heads are raised and lowered again individually and in an oscillation-optimized manner when a defective sheet is detected. The machine does not need to be stopped in the event of defective sheets. Advantageously, rejects can thus be reduced and the performance of the machine can be exploited better.Type: ApplicationFiled: May 27, 2016Publication date: March 16, 2017Inventors: ANDREAS MUELLER, JOCHEN RENNER, MATTHIAS ZAPF, RALF STEINMETZ, MICHAEL OESTREICHER, BURKHARD WOLF, MANFRED HAEUSSLER, DAVID EHRBAR, ALEXANDER KNABE
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Publication number: 20160325953Abstract: A sheet-transporting drum includes sheet-supporting areas each being formed of a first comb segment and a second comb segment having segment teeth. At least one of the comb segments is rotatable for adaptation to a sheet format. A mechanical leading-edge gripper is provided on the first comb segment and a pneumatic trailing-edge gripper is provided on the second comb segment. A mechanical trailing-edge gripper is additionally disposed on the second comb segment and is deactivatable in particular by format adjustments. This advantageously allows either the trailing edge of a sheet to be securely held down mechanically or a full-bleed print to be applied to the sheet when the trailing edge of the sheet is held down pneumatically. A sheet-fed printing machine is also provided.Type: ApplicationFiled: April 21, 2016Publication date: November 10, 2016Inventors: JUERGEN ROTHAUG, ARNO JUENGER, ALBERT MAUL, SVEN GOLL, THOMAS SCHMIDT, ALEXANDER KNABE, DANIEL CONZELMANN, WOLFGANG DOLZ, KAI OSKAR MUELLER, RAIMUND SCHROEDER
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Patent number: 9168729Abstract: 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.Type: GrantFiled: May 11, 2009Date of Patent: October 27, 2015Assignee: Heidelberger Druckmaschinen AGInventors: Jens Hieronymus, Alexander Knabe, Armin Reisinger, Eckehard Sommer, Jan Teubert
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Patent number: 9061487Abstract: 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.Type: GrantFiled: March 22, 2011Date of Patent: June 23, 2015Assignee: Heidelberger Druckmaschinen AGInventors: Martin Greive, Alexander Knabe, Jochen Körner, Jan Teubert
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Patent number: 8873105Abstract: 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.Type: GrantFiled: November 13, 2012Date of Patent: October 28, 2014Assignee: Heidelberger Druckmaschinen AGInventors: Peter Elter, Alexander Knabe, Nikolaus Pfeiffer, Wolfgang Schoenberger
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Patent number: 8869699Abstract: 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.Type: GrantFiled: August 3, 2012Date of Patent: October 28, 2014Assignee: Heidelberger Druckmaschinen AGInventors: Peter Elter, Alexander Knabe, Nikolaus Pfeiffer, Wolfgang Schönberger
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Patent number: 8607701Abstract: 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.Type: GrantFiled: October 20, 2008Date of Patent: December 17, 2013Assignee: Heidelberger Druckmaschinen AGInventors: Martin Greive, Alexander Knabe
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Patent number: 8601946Abstract: 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.Type: GrantFiled: December 2, 2009Date of Patent: December 10, 2013Assignee: Heidelberger Druckmaschinen AGInventors: Martin Greive, Alexander Knabe, Stephan Rudzewitz, Mathias Zuber, Oliver Lang, Dirk Schönmann
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Publication number: 20130032052Abstract: 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.Type: ApplicationFiled: August 3, 2012Publication date: February 7, 2013Applicant: HEIDELBERGER DRUCKMASCHINEN AGInventors: PETER ELTER, ALEXANDER KNABE, NIKOLAUS PFEIFFER, WOLFGANG SCHOENBERGER
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Patent number: 8181573Abstract: 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.Type: GrantFiled: March 27, 2009Date of Patent: May 22, 2012Assignee: Heidleberger Druckmaschinen AktiengesellschaftInventors: Martin Greive, Rolf Hilpert, Alexander Knabe, Rainer Schmitt
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Method for improved plate change and sheet-fed offset printing press having a plate change apparatus
Patent number: 8141488Abstract: 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.Type: GrantFiled: July 11, 2008Date of Patent: March 27, 2012Assignee: Heidelberger Druckmaschinen AGInventors: Christian Görbing, Martin Grieve, Alexander Knabe, Markus Stark, Markus Wolf -
Publication number: 20110226146Abstract: 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.Type: ApplicationFiled: March 22, 2011Publication date: September 22, 2011Applicant: HEIDELBERGER DRUCKMASCHINEN AGInventors: MARTIN GREIVE, ALEXANDER KNABE, JOCHEN KÖRNER, JAN TEUBERT
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Publication number: 20100154664Abstract: 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.Type: ApplicationFiled: December 2, 2009Publication date: June 24, 2010Applicant: HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFTInventors: Martin Greive, Alexander Knabe, Stephan Rudzewitz, Mathias Zuber, Oliver Lang, Dirk Schönmann
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Publication number: 20090282997Abstract: 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.Type: ApplicationFiled: May 11, 2009Publication date: November 19, 2009Applicant: HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFTInventors: Jens Hieronymus, Alexander Knabe, Armin Reisinger, Eckehard Sommer, Jan Teubert