Patents by Inventor Peter Hachmann

Peter Hachmann 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).

  • Patent number: 10737505
    Abstract: A method for alternately operating an inkjet printing machine applying a plurality of inks to a printing material in accordance with a print image, includes conveying the printing material at a conveying speed. A switch is made between the following two modes, a 1st mode of printing an n-color first print job at a first conveying speed and at a print resolution using n inks, i.e. using black ink and n?1 different chromatic inks; and a 2nd mode of printing a reduced-color second print job at a second conveying speed greater than the first conveying speed and at the same print resolution using the n inks. The printing speed and thus the number of prints produced per unit of time in a machine can therefore advantageously be increased.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 11, 2020
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Peter Hachmann
  • Patent number: 10717301
    Abstract: A printing machine for printing on a web includes a first roller and a second roller between which the web forms a loop. A trough for pneumatically guiding the loop equidistantly to the major part of the length of curvature of the trough is provided between the first roller and the second roller.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: July 21, 2020
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Peter Hachmann
  • Publication number: 20200009883
    Abstract: A sheet-fed printing machine contains a printing unit, a drier, and a sheet handling device for transporting or guiding print sheets. The sheet handling device has an opening disposed downstream of the drier in the direction of transport. A humidification device for rehumidifying the print sheets is disposed in such a way that it rehumidifies the print sheets through the opening. The sheet handling device may contain a guide plate or several guide plates.
    Type: Application
    Filed: July 5, 2019
    Publication date: January 9, 2020
    Inventors: CHRISTOPH RUPPANER, CLAUDIUS HAAS, MARKUS LEVA, UWE ANGST, ULRICH FELLENBERG, EDMUND KLEIN, ANDREAS BOETTGER, SEBASTIAN WILHELM, PETER HACHMANN
  • Patent number: 10486438
    Abstract: A method for producing a printed product includes coating a preferably paper or cardboard substrate with a precoat or supplying a substrate that has been coated with a precoat, in which the precoat contains at least one acid, applying a water-based ink to image areas on the coated substrate by using at least one ink print head, and drying the printed substrate and/or the ink, preferably using IR radiation and/or heated air. The precoat includes a photobase generator or a photobase generator is applied at least locally to non-image areas on the substrate, the substrate is irradiated at least locally in non-image areas, preferably using UV radiation, to locally generate a base, and the printed substrate is varnished with a water-based varnish.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 26, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Thomas Paul, Peter Hachmann
  • Publication number: 20190329570
    Abstract: A method prints and dries a substrate where ink containing water and pigment is printed onto the substrate in an inkjet printing process. The substrate has an initial moisture content and absorbs at least water of the ink, causing the moisture content of the substrate to rise. Radiation selectively acting on the water molecules is applied in a first drying step and then radiation selectively acting on the pigment is applied in a second drying step in such a way that after completion of the two drying steps, the water of the applied ink has essentially completely evaporated and the substrate has essentially reattained its initial moisture content. In this manner optimum drying of substrates to which ink has been applied occurs.
    Type: Application
    Filed: April 26, 2019
    Publication date: October 31, 2019
    Inventors: WOLFGANG SCHOENBERGER, PETER HACHMANN, MARKUS MOEHRINGER, UWE ERNST, CHRISTIAN HIEB, THOMAS SCHMIDT, ROLF MUELLER, MICHAEL SAUER
  • Patent number: 10449759
    Abstract: A method corrects for defective printing nozzles in an ink jet printing machine via a computer. The defective printing nozzles are compensated for after the screening process by neighboring printing nozzles applying an increased amount of ink. The method includes precalculating different compensation halftones for different area coverages by the computer, printing the compensation halftones embedded in area coverage halftone areas, evaluating the printed compensation halftones via the computer, and selecting and saving, for every area coverage level, the compensation halftone that best matches the coloration of the original halftone in the respective area coverage halftone area. A defective printing nozzle is detected during production printing by the computer. The local area coverage is determined along the detected defective printing nozzle by the computer.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 22, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Ilias Trachanas, Martin Mayer, Peter Hachmann
  • Publication number: 20190291470
    Abstract: A printing machine for printing on a web includes a first roller and a second roller between which the web forms a loop. A trough for pneumatically guiding the loop equidistantly to the major part of the length of curvature of the trough is provided between the first roller and the second roller.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Inventor: PETER HACHMANN
  • Publication number: 20190255857
    Abstract: A method for alternately operating an inkjet printing machine applying a plurality of inks to a printing material in accordance with a print image, includes conveying the printing material at a conveying speed. A switch is made between the following two modes, a 1st mode of printing an n-color first print job at a first conveying speed and at a print resolution using n inks, i.e. using black ink and n?1 different chromatic inks; and a 2nd mode of printing a reduced-color second print job at a second conveying speed greater than the first conveying speed and at the same print resolution using the n inks. The printing speed and thus the number of prints produced per unit of time in a machine can therefore advantageously be increased.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 22, 2019
    Inventor: PETER HACHMANN
  • Patent number: 10384473
    Abstract: A digital printing machine includes a first cylinder for transporting sheets, a second cylinder for transferring the sheets directly to the first cylinder, a third cylinder for transferring the sheets directly to the second cylinder, and at least one inkjet print head directed towards the first cylinder for printing on the sheets disposed thereon. At least one first sensor measures the temperature of the first cylinder, a second sensor measures the temperature of the sheets while being transported by the second cylinder or by the third cylinder, and at least one temperature control device controls the temperature of the sheets prior to their transfer to the first cylinder. A control element adapts the temperature of the sheets to the temperature of the first cylinder. The first sensor, the second sensor and the temperature control device are connected to the control element.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: August 20, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Peter Hachmann, Rolf Mueller, Thomas Schmidt, Michael Pritschow, Peter Thoma, Kai Oskar Mueller, Michael Gieser, Timo Erben
  • Patent number: 10343440
    Abstract: A method prints on a printing material using inks and dampening fluids. An ink printing machine uses ink print heads to apply an image to a front side of the printing material and a dampening fluid print head to apply a dampening fluid image, thus reducing or avoiding water-related cockling of the printing material. The method includes: providing the image to be printed, calculating n different color separation matrices, calculating n ink amount matrices An from the color separation matrices, and calculating a total ink amount matrix A. For every element of the total ink amount matrix: calculating a matrix B as B=G*A, with a weighting matrix G and determining the maximum of the matrix B, calculating a dampening fluid matrix C, calculating the dampening fluid image from the dampening fluid image matrix C, and printing the ink image and the dampening fluid image.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 9, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Peter Hachmann, Klaus Olawsky
  • Patent number: 10252549
    Abstract: A printed product is produced by applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process, applying a substantially colorless and water-containing liquid a) to non-image regions and/or b) to image regions that have little ink in a drop-on-demand process and drying the printing material. In this case, the printing material has a coating with at least one acid. After applying ink and applying the liquid, a water-containing further liquid is applied both to image regions and to non-image regions of the printing material. The first-mentioned liquid and/or the further liquid contains at least one substance for at least partly neutralizing the acid. The undesired formation of crease waves or curls and glossiness fluctuations between varnished image areas and varnished non-image areas is thus advantageously avoided.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 9, 2019
    Assignees: Heidelberger Druckmaschinen AG, FUJIFILM Corporation
    Inventors: Peter Hachmann, Bernd Sitzmann, Yasuhito Oshima, Jun Yamanobe
  • Patent number: 10252548
    Abstract: A method for manufacturing printed products contains the steps of applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process. An essentially colorless and water-containing liquid is applied a) to non-image regions and/or b) to image regions that have only little ink in the drop-on-demand process. The printing material is dried. The printing material has a coating that contains at least one acid. After the application of ink and the application of a liquid, a water-containing further liquid, for instance a varnish, is applied both to image regions and to non-image regions of the printing material, and that the liquid and/or the further liquid contains at least one substance that at least partly neutralizes the acid. The undesired formation of waves and glossiness fluctuations between varnished image regions and varnished non-image regions may thus advantageously be avoided.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 9, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Thomas Paul, Peter Hachmann
  • Publication number: 20190070848
    Abstract: A method corrects for defective printing nozzles in an ink jet printing machine via a computer. The defective printing nozzles are compensated for after the screening process by neighboring printing nozzles applying an increased amount of ink. The method includes precalculating different compensation halftones for different area coverages by the computer, printing the compensation halftones embedded in area coverage halftone areas, evaluating the printed compensation halftones via the computer, and selecting and saving, for every area coverage level, the compensation halftone that best matches the coloration of the original halftone in the respective area coverage halftone area. A defective printing nozzle is detected during production printing by the computer. The local area coverage is determined along the detected defective printing nozzle by the computer.
    Type: Application
    Filed: August 23, 2018
    Publication date: March 7, 2019
    Inventors: ILIAS TRACHANAS, MARTIN MAYER, PETER HACHMANN
  • Publication number: 20190016157
    Abstract: A method pretreats a printing material used for ink printing to influence the spreading of ink print dots on the printing material. The spreading behavior is influenced in such a way that the ink print dots spread in an anisotropic way. The anisotropic spreading advantageously allows undesired quality losses in the print that are caused by a failed ink nozzle to be reduced or avoided. The influencing of the spreading behavior may be achieved by an anisotropic application of a liquid, in particular a primer or varnish, to the printing material, or by an anisotropic embossment or print on the printing material or by an anisotropic treatment of the printing material with charged particles, in particular by a plasma or a corona, or with electromagnetic radiation, in particular laser radiation.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 17, 2019
    Inventor: PETER HACHMANN
  • Publication number: 20190009604
    Abstract: A method prints on a printing material using inks and dampening fluids. An ink printing machine uses ink print heads to apply an image to a front side of the printing material and a dampening fluid print head to apply a dampening fluid image, thus reducing or avoiding water-related cockling of the printing material. The method includes: providing the image to be printed, calculating n different color separation matrices, calculating n ink amount matrices An from the color separation matrices, and calculating a total ink amount matrix A. For every element of the total ink amount matrix: calculating a matrix B as B=G*A, with a weighting matrix G and determining the maximum of the matrix B, calculating a dampening fluid matrix C, calculating the dampening fluid image from the dampening fluid image matrix C, and printing the ink image and the dampening fluid image.
    Type: Application
    Filed: July 5, 2018
    Publication date: January 10, 2019
    Inventors: Peter HACHMANN, Klaus OLAWSKY
  • Publication number: 20180326750
    Abstract: A digital printing machine includes a first cylinder for transporting sheets, a second cylinder for transferring the sheets directly to the first cylinder, a third cylinder for transferring the sheets directly to the second cylinder, and at least one inkjet print head directed towards the first cylinder for printing on the sheets disposed thereon. At least one first sensor measures the temperature of the first cylinder, a second sensor measures the temperature of the sheets while being transported by the second cylinder or by the third cylinder, and at least one temperature control device controls the temperature of the sheets prior to their transfer to the first cylinder. A control element adapts the temperature of the sheets to the temperature of the first cylinder. The first sensor, the second sensor and the temperature control device are connected to the control element.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 15, 2018
    Inventors: PETER HACHMANN, ROLF MUELLER, THOMAS SCHMIDT, MICHAEL PRITSCHOW, PETER THOMA, KAI OSKAR MUELLER, MICHAEL GIESER, TIMO ERBEN
  • Publication number: 20180134047
    Abstract: A method for producing a printed product includes coating a preferably paper or cardboard substrate with a precoat or supplying a substrate that has been coated with a precoat, in which the precoat contains at least one acid, applying a water-based ink to image areas on the coated substrate by using at least one ink print head, and drying the printed substrate and/or the ink, preferably using IR radiation and/or heated air. The precoat includes a photobase generator or a photobase generator is applied at least locally to non-image areas on the substrate, the substrate is irradiated at least locally in non-image areas, preferably using UV radiation, to locally generate a base, and the printed substrate is varnished with a water-based varnish.
    Type: Application
    Filed: September 27, 2017
    Publication date: May 17, 2018
    Inventors: THOMAS PAUL, PETER HACHMANN
  • Patent number: 9937734
    Abstract: A method for the indirect application of printing liquid onto a printing material provides an intermediate carrier, preferably a circulating belt, a liquid conditioning medium including a first substance applied onto the intermediate carrier and a printing liquid, in particular an inkjet ink, including a second substance applied onto the conditioning medium on the intermediate carrier. The printing liquid is situated as droplets or a layer substantially on the conditioning medium and the droplets or the layer form a contact region on their underside with the conditioning medium. The printing liquid is heated, preferably by way of a dryer and the printing liquid is transferred from the intermediate carrier onto the printing material.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 10, 2018
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Bernard Beier, Martin Greive, Peter Hachmann, Axel Hauck, Rolf Kuendgen, Albert Maul, Rolf Mueller, Heiner Pitz, Achim Scheurer, Matthias Schloerholz, Michael Schwandt
  • Patent number: 9889644
    Abstract: A method for printing on sheets in an inkjet process using nozzles includes transporting the sheets on a drum. When the nozzles are actuated by a computer, banding defects are compensated for and the computer factors in or takes into consideration thermal properties of the drum as it actuates the nozzles.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: February 13, 2018
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Peter Hachmann
  • Publication number: 20170341418
    Abstract: A method for manufacturing printed products contains the steps of applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process. An essentially colorless and water-containing liquid is applied a) to non-image regions and/or b) to image regions that have only little ink in the drop-on-demand process. The printing material is dried. The printing material has a coating that contains at least one acid. After the application of ink and the application of a liquid, a water-containing further liquid, for instance a varnish, is applied both to image regions and to non-image regions of the printing material, and that the liquid and/or the further liquid contains at least one substance that at least partly neutralizes the acid. The undesired formation of waves and glossiness fluctuations between varnished image regions and varnished non-image regions may thus advantageously be avoided.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Inventors: THOMAS PAUL, PETER HACHMANN