Patents by Inventor Ludo Vervloet

Ludo Vervloet 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).

  • Publication number: 20190084334
    Abstract: A method and apparatus for processing a lithographic printing plate includes development with an alkaline solution and gumming with a first gum solution and subsequently with a second gum solution, wherein both gum solutions are provided in a cascade configuration whereby the second gum solution overflows into the first gum solution.
    Type: Application
    Filed: February 3, 2017
    Publication date: March 21, 2019
    Applicant: AGFA NV
    Inventors: Philippe MORIAME, Iris BOGUNOVIC, Ludo VERVLOET
  • Publication number: 20190079406
    Abstract: A method for processing a lithographic printing plate, comprising includes development with an alkaline solution and gumming with a first gum solution and subsequently with a second gum solution, wherein both gum solutions are provided in a cascade configuration whereby the second gum solution overflows into the first gum solution.
    Type: Application
    Filed: February 3, 2017
    Publication date: March 14, 2019
    Applicant: AGFA NV
    Inventors: Philippe MORIAME, Iris BOGUNOVIC, Ludo VERVLOET
  • Publication number: 20190079405
    Abstract: An apparatus for processing a lithographic printing plate material includes a development unit and a closed loop recirculation system including at least one inlet opening for removing a development solution and at least one inlet opening for injecting the development solution.
    Type: Application
    Filed: February 3, 2017
    Publication date: March 14, 2019
    Applicant: AGFA NV
    Inventors: Philippe MORIAME, Iris BOGUNOVIC, Ludo VERVLOET
  • Publication number: 20190072856
    Abstract: A method for processing a lithographic printing plate includes development with an alkaline solution and gumming with a first gum solution and subsequently with a second gum solution, wherein both gum solutions are provided in a cascade configuration whereby the second gum solution overflows into the first gum solution and wherein the gum solution(s) include a nitrate salt.
    Type: Application
    Filed: February 3, 2017
    Publication date: March 7, 2019
    Inventors: Ludo VERVLOET, Rik VANDENBRUWAENE, Philippe MORIAME, Iris BOGUNOVIC
  • Patent number: 6544719
    Abstract: A cost efficient method of making a lithographic printing plate precursor is disclosed, the method comprising the steps of coating a silver halide emulsion layer on a hydrophilic base which is provided with physical development nuclei; simultaneously with the preceding step, coating on the emulsion layer a solution that induces silver salt diffusion transfer reversal development of the silver halide; allowing diffusion of complexed silver ions to the physical development nuclei, thereby forming silver metal that is deposited on the hydrophilic base; a wash-off step wherein the emulsion layer is removed from the silver metal. The material thus obtained can be exposed image-wise in heat-mode, e.g. by means of an infrared laser, thereby ablating the silver metal and revealing the hydrophilic base at exposed areas. Immediately after exposure, it can be used as a lithographic printing plate without the need for a wet processing step.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: April 8, 2003
    Assignee: Agfa-Gevaert
    Inventors: Paul Coppens, Ludo Vervloet
  • Publication number: 20030013044
    Abstract: A cost efficient method of making a lithographic printing plate precursor is disclosed, the method comprising the steps of
    Type: Application
    Filed: June 18, 2002
    Publication date: January 16, 2003
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Paul Coppens, Ludo Vervloet
  • Patent number: 6284426
    Abstract: The present invention provides an alkaline processing solution comprising at least one silver halide solvent other than sulfite, characterized in that said alkaline processing solution further contains aluminium ions in an amount of at least 0.3 g/l. There is further provided a method for making a lithographic printing plate according to the DTR-process using an aqueous alkaline processing solution in the presence of at least one developing agent and at least one silver halide solvent, characterized in that said alkaline processing solution contains aluminium ions in an amount of at least 0.3 g/l.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: September 4, 2001
    Assignee: Agfa-Gevaert
    Inventors: Paul Coppens, Ludo Vervloet
  • Patent number: 6261733
    Abstract: According to the present invention, there is provided a silver salt diffusion transfer material, comprising on a hydrophilic surface of a support in the order given (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) a top layer containing gelatin, said silver halide emulsion being spectrally sensitized with a dye with a sensitizing maximum between 380 and 430 nm, characterized in that said top layer comprises a compound I and/or a compound II
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: July 17, 2001
    Assignee: Agfa-Gevaert
    Inventors: Paul Coppens, Ludo Vervloet, Paul Callant
  • Patent number: 6010818
    Abstract: The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of:image-wise exposing an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei and (ii) a photosensitive layer comprising a photosensitive silver halide emulsion said photosensitive layer being in water permeable relationship with said image receiving layer,applying an aqueous alkaline solution to the imaging element in the presence of (a) developing agent(s) and (a) silver halide solvent(s) to form a silver image in said image receiving layer,treating the imaging element with a first lithographic finisher in order to remove the layer(s) on top of the image receiving layer, thereby exposing the imaged surface of the support by uncovering said silver image formed in said image receiving layer,treating said exposed imaged surface of the support with a second litho
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: January 4, 2000
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Paul Coppens, Ludo Vervloet
  • Patent number: 5811216
    Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) an intermediate layer and (iii) a photosensitive layer containing one or more silver halide emulsions being in water permeable relationship with said image receiving layer, characterized in that said intermediate layer comprises at least 0.08 mmole/m.sup.2 of a bromide salt.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: September 22, 1998
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Paul Coppens, Ludo Vervloet