Patents by Inventor David Edgar Brown

David Edgar Brown 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: 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
  • 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