Agfa Gevaert Nv

Agfa-gevaert

Agfa Graphics Nv

Dirk Franky Kokkelenberg

Joan T Vermeersch

Guido I Hauquier

Johan August Loccufier

Huub Van Aert

Dirk Cyriel Quintens

Fabienne Goethals

Marc Irene Van Damme

Eric Verschueren

Hubertus Van Aert

Marc Van Damme

Lionel Petton

Joseph Vander Aa

Luc J Vanmaele

Jan Gilleir

Johan Hubert Van Hunsel

Philip John Watkiss

Klaus Joerg

Marin Steenackers

Pascal F Meeus

Willem Cortens

Inge Claes

Peter Bries

Bart Braspenninckx

An aqueous inkjet ink for forming a colour upon heat treatment includes a) an immobilized leuco dye; b) a colour developing agent or colour developing agent precursor; and c) optionally an opthothermal converting agent; wherein the leuco dye is immobilized by being covalently bonded to polymeric particles or by being included in the core of capsules composed of a polymeric shell surrounding a core.

Aqueous inkjet inks

A laser markable composition includes (a) an aqueous medium; (b) capsules composed of a polymeric shell surrounding a core; (c) a color developing agent or color developing agent precursor; and (d) an optothermal converting agent; characterized in that the core of the capsule contains a leuco dye.

Laser markable compositions, articles and documents

A laser markable material includes a laser markable layer, present as a self-supporting layer or as a layer on a support, the laser markable layer including an infrared absorbing dye and an infrared absorbing pigment, characterized in that the amount of the infrared absorbing pigment is between 10 ppm and 1000 ppm relative to the total dry weight of the laser markable layer.

Laser markable materials and documents

A laser markable composition includes (a) an aqueous medium; (b) a leuco dye; (c) an optothermal converting agent; and (d) a color developing agent, characterized in that the color developing agent is a polymer particle capable of forming an acid upon exposure to heat.

A laser markable composition includes (a) an aqueous medium; (b) polymeric particles dispersed in the aqueous medium; (c) a color developing agent or color developing agent precursor; and (d) an optothermal converting agent; characterized in that a leuco dye is covalently bonded to the polymeric particles.

The invention relates to an image receiving material for offset printing comprising a support and an image receiving layer, the image receiving layer comprising a porous pigment and an aqueous dispersion of a polymer particle characterized in that the image receiving layer further comprises a copolymer comprising alkylene and vinyl alcohol units.

Image receiving material for offset printing

Disclosed is a printable paper comprising a water-resistant support having two optionally subbed sides and a single layer on at least one of said optionally subbed sides, wherein said single layer has no substantial compositional variation, has a layer thickness of at least 3 &#x3bc;m, a pore volume of at least 1.2 mL/mand comprises at least one porous pigment. Also disclosed is a process for producing such a printable paper and use thereof in printing.

Printable paper, comprising water-resistant support

A printable paper comprising a water-resistant support having two optionally subbed sides and a single layer on at least one of said optionally subbed sides, wherein said single layer has no substantial compositional variation, has a layer thickness of at least 3 &#x3bc;m, a pore volume of at least 1.2 mL/mand comprises at least one porous pigment; a process for producing a printable paper comprising the steps of: (i) optionally providing a water-resistant support having two sides with a subbing layer on at least one side; (ii) providing at least one side of said optionally subbed water-resistant support with a single layer having no substantial compositional variation, said single layer being applied to said optionally subbed water-resistant support as at least one wet aqueous layer in a single pass for each side of said water-resistant support, said at least one aqueous layer comprising at least one latex, at least one pigment, at least one binder and optionally at least one insolubilizing agent, wherein said latex is an anionic acrylic latex or an aliphatic polyurethane latex; and the use in printing of the above-described printable paper or that obtained by the above-described production process.

Printable paper; process for producing printable paper; and use thereof

A method of making a lithographic printing plate includes the steps of:

Method of developing a heat-sensitive lithographic printing plate precursor with a gum solution

A method for making a lithographic printing plate is disclosed which comprises the steps of:

Method for making a lithographic printing plate

A method of making a lithographic printing plate is disclosed which comprises the steps of

A method for making a heat-sensitive negative-working lithographic printing plate precursor is disclosed comprising the steps of

Method for making a negative working, heat-sensitive lithographic printing plate precursor

A negative-working lithographic printing plate precursor is disclosed which comprises a grained and anodized aluminum support having a hydrophilic surface and a heat-sensitive coating provided on the hydrophilic surface, the coating comprising hydrophobic thermoplastic polymer particles which are capable of forming a hydrophobic phase in the coating by heat-induced coalescence of the polymer particles. The support is characterized by a surface roughness, expressed as arithmetical mean center-line roughness Ra, which is less than 0.45 &#x3bc;m. The smooth surface enables to prepare a lithographic printing plate from the mentioned precursor, which is characterized by a high run length during printing.

Negative-working thermal lithographic printing plate precursor comprising a smooth aluminum support

A printing system making use of a lithographic printing plate has been disclosed, the system comprising the steps of image-wise exposing to infrared light a heat sensitive imaging element, the element being optionally present on the printing press before starting the image-wise exposing step to infrared light, wherein the element comprises, on a lithographic base with a hydrophilic surface thereupon, an image-forming layer including hydrophobic thermoplastic polymer particles and a hydrophilic polymer binder, and, optionally, an infrared absorbing compound, wherein the hydrophobic polymer particles contain more than 0.1 wt % of nitrogen and have an average particle size diameter in the range from 0.015 to 0.150 &mgr;m; developing the image-wise exposed imaging element by mounting it on a print cylinder of a printing press and applying an aqueous dampening liquid ink to the imaging element while rotating the print cylinder; providing a printing run length of the press, increased with a factor of at least 5, when reducing the average particle size diameter of the hydrophobic polymer particles in an amount of more than 25%.

Growing community of inventors

St. Niklaas, Belgium

Dirk Franky Kokkelenberg