Patents by Inventor Donald L. Swihart

Donald L. Swihart 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: 10935887
    Abstract: A system is for processing a photosensitive flexographic printing plate having a latent image formed by image-wise exposure of an aqueous-processable photopolymer. The system can use a first aqueous processing solution with the latent image for cleaning and then washing a resulting relief image with a second aqueous processing solution, where the second aqueous processing solution is devoid of the photopolymer. A processing solution tank is configured to combine the first used aqueous processing solution with the second used aqueous processing solution to form a combined used aqueous processing solution. A processing solution removal can include: a holding tank configured for receiving the combined used aqueous processing solution; and a conduit from the processing solution tank to the holding tank. The processing solution tank includes the combined used aqueous processing solution at less than a predefined maximum volume and having the photopolymer at less than a predefined maximum concentration.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: March 2, 2021
    Assignee: MIRACLON CORPORATION
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Publication number: 20200241422
    Abstract: A system is for processing a photosensitive flexographic printing plate having a latent image formed by image-wise exposure of an aqueous-processable photopolymer. The system can use a first aqueous processing solution with the latent image for cleaning and then washing a resulting relief image with a second aqueous processing solution, where the second aqueous processing solution is devoid of the photopolymer. A processing solution tank is configured to combine the first used aqueous processing solution with the second used aqueous processing solution to form a combined used aqueous processing solution. A processing solution removal can include: a holding tank configured for receiving the combined used aqueous processing solution; and a conduit from the processing solution tank to the holding tank. The processing solution tank includes the combined used aqueous processing solution at less than a predefined maximum volume and having the photopolymer at less than a predefined maximum concentration.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Donald L. SWIHART, Fredrick Charles MELLEMA, David Edgar BROWN, M. Zaki ALI
  • Patent number: 10642157
    Abstract: A method for processing a photosensitive flexographic printing plate having an aqueous-processable photopolymer. A main processing unit is used to develop a relief image by removing unexposed photopolymer using an aqueous processing solution including a first dispersing agent while the photosensitive flexographic printing plate is being subjected to mechanical cleaning. Used aqueous processing solution containing the removed photopolymer is returned back into a processing solution tank. A secondary processing unit is used to wash the developed relief image with secondary aqueous processing solution including a second dispersing agent to remove debris from the developed relief image. Used secondary aqueous processing solution containing the removed photopolymer is directed into the processing solution tank. A portion of the aqueous processing solution from the processing solution tank is removed to keep a volume of aqueous processing solution in the processing solution tank below a predefined maximum volume.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 5, 2020
    Assignee: MIRACLON CORPORATION
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Publication number: 20190278183
    Abstract: A method for processing a photosensitive flexographic printing plate having an aqueous-processable photopolymer. A main processing unit is used to develop a relief image by removing unexposed photopolymer using an aqueous processing solution including a first dispersing agent while the photosensitive flexographic printing plate is being subjected to mechanical cleaning. Used aqueous processing solution containing the removed photopolymer is returned back into a processing solution tank. A secondary processing unit is used to wash the developed relief image with secondary aqueous processing solution including a second dispersing agent to remove debris from the developed relief image. Used secondary aqueous processing solution containing the removed photopolymer is directed into the processing solution tank. A portion of the aqueous processing solution from the processing solution tank is removed to keep a volume of aqueous processing solution in the processing solution tank below a predefined maximum volume.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Applicant: MIRACLON CORPORATION
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Patent number: 10324378
    Abstract: A method for processing a photosensitive flexographic printing plate having an aqueous-processable photopolymer. A main processing unit is used to develop a relief image by removing unexposed photopolymer using an aqueous processing solution including a first dispersing agent while the photosensitive flexographic printing plate is being subjected to mechanical cleaning. Used aqueous processing solution containing the removed photopolymer is returned back into a processing solution tank. A secondary processing unit is used to wash the developed relief image with secondary aqueous processing solution including a second dispersing agent to remove debris from the developed relief image. Used secondary aqueous processing solution containing the removed photopolymer is directed into the processing solution tank. A portion of the aqueous processing solution from the processing solution tank is removed to keep a volume of aqueous processing solution in the processing solution tank below a predefined maximum volume.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: June 18, 2019
    Assignee: MIRACLON CORPORATION
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Publication number: 20180004090
    Abstract: A processing system for processing a photosensitive flexographic printing plate having an aqueous-processable photopolymer. A main processing unit is used to develop a relief image by removing unexposed photopolymer using an aqueous processing solution including a first dispersing agent while the photosensitive flexographic printing plate is being subjected to mechanical cleaning. Used aqueous processing solution containing the removed photopolymer is returned back into a processing solution tank. A secondary processing unit is used to wash the developed relief image with secondary aqueous processing solution including a second dispersing agent to remove debris from the developed relief image. Used secondary aqueous processing solution containing the removed photopolymer is directed into the processing solution tank.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 4, 2018
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Publication number: 20180004092
    Abstract: A method for processing a photosensitive flexographic printing plate having an aqueous-processable photopolymer. A main processing unit is used to develop a relief image by removing unexposed photopolymer using an aqueous processing solution including a first dispersing agent while the photosensitive flexographic printing plate is being subjected to mechanical cleaning. Used aqueous processing solution containing the removed photopolymer is returned back into a processing solution tank. A secondary processing unit is used to wash the developed relief image with secondary aqueous processing solution including a second dispersing agent to remove debris from the developed relief image. Used secondary aqueous processing solution containing the removed photopolymer is directed into the processing solution tank. A portion of the aqueous processing solution from the processing solution tank is removed to keep a volume of aqueous processing solution in the processing solution tank below a predefined maximum volume.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 4, 2018
    Inventors: Donald L. Swihart, Fredrick Charles Mellema, David Edgar Brown, M. Zaki Ali
  • Patent number: 6962765
    Abstract: A UV-mask, a system and method for making the mask and a method of using the mask for producing an image a print medium are disclosed. The system includes a donor element having a substrate coated with a layer of IR-sensitive material and a layers of UV-absorbing material, and a receptor element. The IR-sensitive material is capable of detaching a significant portion of the itself and the UV-absorbing material from the donor element and transfer the detached materials to the receptor element when irradiated by an IR radiation. The method for making a UV-mask includes irradiating such a donor element with an IR radiation. The method of using includes overlaying a digital UV mask on a UV-sensitive medium, exposing the medium to a UV radiation through the UV mask, and developing the UV-sensitive medium.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: November 8, 2005
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Donald L. Swihart, Kevin M. Kidnie, Richard C. Buchholtz
  • Patent number: 6737204
    Abstract: The present invention provides a flexible and convenient method that combines a digital color image with the versatility of an analog imaging method to create a hybrid digital/analog image, wherein an analog image is formed directly on a digitally generated image.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 18, 2004
    Assignee: Kodak Polychrome Graphics, LLC
    Inventor: Donald L. Swihart
  • Publication number: 20030112453
    Abstract: In general, the invention provides scaling tools for compensating for scaling variations between two printing systems, such as an analog printing system and a digital printing system. An operator designates one of the systems as the reference printing system and the other printing system as the scalable printing system. The operator constructs a reference grid with the reference printing system and a scaling grid with the scalable printing system. By comparing the reference grid and the scaling grid, the operator finds one or more scaling factors, which the operator may use to set the scale of the scalable printing system. The operator may print an image using the reference printing system and the scalable printing system, and the scalable printing system prints to the same scale as the reference printing system.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 19, 2003
    Applicant: Imation Corp.
    Inventor: Donald L. Swihart
  • Publication number: 20030068569
    Abstract: The present invention provides a flexible and convenient method that combines a digital color image with the versatility of an analog imaging method to create a hybrid digital/analog image, wherein an analog image is formed directly on a digitally generated image.
    Type: Application
    Filed: September 4, 2002
    Publication date: April 10, 2003
    Inventor: Donald L. Swihart
  • Patent number: 4990375
    Abstract: A receptor sheet for image-transfer processes is provided by providing a backside polymeric coating on the sheet with differential surface characteristics which can be visually observed. The characteristics may define a logo to differentiate the backside from the receptor surface.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: February 5, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald L. Swihart