Agfa Graphics Nv

Agfa Gevaert Nv

Agfa-gevaert

Agfa Nv

Agfa Offset Bv

Peter Hendrikx

Marc Irene Van Damme

Paul R Callant

Alexander Williamson

Sam Verbrugghe

Johan August Loccufier

Marc Van Damme

Katleen Himschoot

Jan Venneman

Joan T Vermeersch

Huub Van Aert

Leo Oelbrandt

Johan Hubert Van Hunsel

Thomas Billiet

Marin Steenackers

Tim Desmet

Willi-Kurt Gries

Jan Sinnesael

Sue Wilkinson

Johan Vermeersch

Roberto Carbonini

Jan Dierckx

Milan Stamenovic

A method for making a negative-working lithographic printing plate includes subjecting an image-wise exposed, developed, and dried plate precursor to UV LED radiation.

Method for making a lithographic printing plate

A method of lithographic plate making is disclosed wherein a plate precursor is exposed to laser radiation in the wavelength range from 350 to 450 nm, said plate precursor comprising a hydrophilic support and a photopolymerizable or photocrosslinkable image recording layer, and then processed on-press by supplying fountain and ink. The exposure produces a visible image having a 1976 CIELAB color distance &#x394;E between exposed and non-exposed areas of at least 2.5.

On-press processing of a UV or violet-sensitized lithographic printing plate

A system for exposing a heat and/or light sensitive printing plate precursor including a coating on a support includes a platesetter including a laser head for generating a laser beam to create an image, and the platesetter further includes an electrostatic generator capable of electrostatically charging the surface of the coating.

System for reducing ablation debris

A method of making a lithographic printing plate includes the steps of a) image-wise exposing a lithographic printing plate precursor including a hydrophilic support and a coating containing a colorant precursor to form a lithographic image consisting of printing areas and non-printing areas, b) developing the plate precursor to remove the coating in the non-printing areas from the support, and c) drying the plate precursor, and d) subjecting the plate precursor to heat or radiation to induce a colour change of the coating in the printing areas, wherein before step b) the coating in the non-printing areas and the support are characterised by a CIE 1976 colour difference &#x394;Ewhich is 5.0 or less, and after step d) the CIE 1976 colour difference &#x394;Ebetween the coating in the printing areas and the non-printing areas is more than 6.8.

Method for providing lithographic printing plates

A method of making a lithographic printing plate includes the steps of a) image-wise exposing a lithographic printing plate precursor, including a support including a hydrophilic surface or a hydrophilic layer and, thereon, a light or heat sensitive coating including a photopolymerizable composition, b) processing the precursor, consecutively, with a first solution and a second solution, to remove the coating from the support in the non-printing areas, wherein the first and second solutions are provided by a cascade system, the second solution overflows into the first solution and the first solution overflows into a container to be treated as waste, and the second solution is regenerated by adding a replenishing solution or a mixture of replenishing solutions at a rate of at least 5 ml/mof treated precursor and at most 100 ml/mof treated precursor.

Method of making a lithographic printing plate

A method for making a lithographic printing plate precursor is disclosed comprising the steps of a. providing a lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer, a photopolymerizable coating comprising a photopolymerizable composition, and an overcoat layer comprising a water soluble low molecular weight acid, wherein said overcoat layer has a surface pH-value ranging between 1 to 6; b. image-wise exposing the precursor; c. optionally heating the exposed precursor; d. processing the obtained precursor by applying a gum solution and optionally brushing the precursor, and/or by mounting the precursor on a plate cylinder of a lithographic printing press and rotating the plate cylinder while feeding dampening liquid and/or ink to the coating. The printing plate obtained after imaging and processing in an off-press configuration with a gum solution or in an on-press configuration with fountain solution and ink shows an improved roll-up performance in the start-up of a printing process on a printing press.

Method for making a lithographic printer plate precursor

A lithographic printing plate precursor comprising an image-recording layer, said image-recording layer being photopolymerizable upon exposure to light having a wavelength of from 300 to 500 nm and containing a mixture of sensitizers.

Lithographic printing plate precursor

A method of preparing a lithographic printing plate in which no pre-heat step is used comprising the steps of:&#x2014;providing a lithographic printing plate precursor comprising a support and a photopolymerizable image-recording layer, the image-recording layer comprising a monomer and a binder;&#x2014;image-wise exposing the precursor in an exposure unit;&#x2014;off press developing the exposed precursor with an aqueous solution in a processing unit; characterized in that the ratio of the total amount of monomer to the total amount of binder is at least 1 and the time lapse between exposing an image-area of the precursor and contacting the image-area with the aqueous solution is at least 1 minute.

Method for preparing lithographic printing plate precursors

A method for preparing a lithographic printing plate by means of ink jet printing is disclosed. The ink jet fluid contains an oleophilizing compound having in its chemical structure a phosphorous containing group capable of reacting with the surface of a lithographic receiver.

Computer-to-plate by ink jet

Method for preparing a lithographic printing plate by ablation of a heat sensitive ablatable imaging element

According to the present invention there is provided a heat-sensitive non-ablatable wasteless imaging element for providing a lithographic printing plate, having on a support as top layer an image forming layer comprising a heat-switchable binder, characterized in that said image forming layer becomes more hydrophobic under the influence of heat.

Heat-sensitive non-ablatable wasteless imaging element for providing a

According to the present invention there is provided a method for lithographic printing comprising the following steps:

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Mortsel, Belgium

Peter Hendrikx