Patents by Inventor Marcus Jonkheere

Marcus Jonkheere 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).

  • Method for preparing an imaging element for making an improved printing plate according to the silver salt diffusion transfer process
    Patent number: 6146807
    Abstract: According to the present invention there is provided a method for preparing a silver salt diffusion transfer imaging element comprising the steps of coating in the order given on a grained and anodized side of an aluminum support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion in water permeable relationship with said image receiving layer and (iii) optionally an antistress layer in water permeable relationship with said image receiving layer, characterized in that said aluminum support, provided with said image receiving layer, is kept at a relative humidity of at least 45% in an area of a machine, the said area being ahead of a coating head used for coating said photosensitive layer.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: November 14, 2000
    Assignee: Agfa-Gevaert, N.V.
    Inventor: Marcus Jonkheere
  • Method for preparing an imaging element for making an improved printing plate according to the silver salt diffusion transfer process
    Patent number: 6146808
    Abstract: According to the present invention there is provided a method for preparing a silver salt diffusion transfer imaging element comprising the steps of coating in the order given on a grained and anodized side of an aluminum support (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) optionally an antistress layer being in water permeable relationship with said image receiving layer, characterized in that said element before and/or after being coated with said image-receiving layer and before being coated with another layer is wetted with a fluidum with a conductivity of at least 1 .mu.S/cm at 25.degree. C. and then the wetted element is brought in contact with an earthed discharging means and dried before coating the following layer.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: November 14, 2000
    Assignee: AGFA-Gevaert, N.V.
    Inventor: Marcus Jonkheere
  • Imaging element for making an improved printing plate according to the silver salt diffusion transfer process
    Patent number: 6136496
    Abstract: According to the present invention there is provided an imaging element comprising in the order given on a grained and anodized side of an aluminum support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion in water permeable relationship with said image receiving layer and (iii) optionally an antistress layer in water permeable relationship with said image receiving layer, characterized in that underlying the photosensitive layer there is a layer comprising at least 10 mg/m.sup.2 of a copolymer containing at least 1 mole % of tetraallyloxyethane.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: October 24, 2000
    Assignee: Agfa-Gevaert, N.V.
    Inventor: Marcus Jonkheere
  • Method for preparing an aluminium foil for use as a support in lithographic printing plates
    Patent number: 5645972
    Abstract: The present invention provides a method for preparing an aluminum foil comprising the steps of roughening and anodizing an aluminum foil, posttreating said roughened and anodized aluminum foil with an aqueous bicarbonate solution and subsequently rinsing said posttreated foil with water characterized in that the temperature of said water ranges from 30.degree. C. to 55.degree. C.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: July 8, 1997
    Assignee: Agfa-Gevaert, N.V.
    Inventor: Marcus Jonkheere